manual_edf sk 1-1

Product Manual1HYB 800001-52 Rev. A

EDF SKS 1-1with operating mechanismType FSA

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101112

Product Manual HIGH VOLTAGE CIRCUIT-BREAKER-TYPEED 1HYB800001-26

FUNCTIONAL VALUES1HYB800001-53

LUBRICANTS1HYB800001-28

LOCKING LIQUID FOR THREADS1HYB800001-29

GENERAL INSTRUCTIONS FORMAINTENANCE, TRANSPORT & STORAGE1HYB800001-30

GOODS MARKING AND TRANSPORT1HYB800001-31

STORAGE PRIOR TO ERECTION1HYB800001-32

INFORMATIONSF6 GAS AND GAS MIXTURES1HYB800001-33

SAFETY REGULATIONS1HYB800001-35

DISPOSAL AND RECYCLING1HYB800001-36

INSTRUCTIONS FOR ERECTION,OPERATION AND MAINTENANCE1HYB800001-54

INSTRUCTIONS FOR OPERATIONAND MAINTENANCE OPERATINGMECHANISM TYPE FSA -1HYB800001-38

HIGH VOLTAGE CIRCUIT-BREAKER TYPE ED

The high voltage circuit-breaker type ED is a detached SF6 circuit-breaker for outdoorerection in open substations.

The circuit-breaker is built up of three separate poles, which consist of three mainparts. At the bottom, the mechanism housing is made of aluminium. The hollow postinsulators, through which operating insulators run and on top, the breaking units.Each breaking unit consists of a hollow insulator which together with an upper and alower flange constitute the casing and a lower and an upper current path with acontact system. The moving contacts are assembled on the lower current pathwhereas the fixed contacts are assembled on the upper one.

The circuit-breaker poles to ED SK are permanently filled with SF6 - gas, normally tothe pressure 0.7 MPa absolute at 200C. For monitoring the pressure the circuit-breaker is equipped with a density monitor. The poles are mounted on a commonsupporting frame, consisting of a front and a rear pole beam. The latter is mountedon two supports which are anchored to the foundations. The beams and supports arehot-dip galvanized.

The pressure rise and gas flow which are necessary for extinguishing the arc duringthe course of breaking are produced partly by compression of the gas, partly by theenergy given from the arc.

At the opening operation, the moving contact is pulled downwards over the fixedpiston and the confined quantity of gas is compressed and at high speed forced outthrough the springs in the upper end of the cylinder. At the same stage the arcingcontacts are separated and an arc occurs. A specially formed nozzle leads theoutflowing gas towards the arc. The gas is allowed to pass both downwards throughthe moving arcing contact and upwards past the fixed arcing contact.

For the continuous current there are separate contacts which are not affected by thearc at breaking.

At closing operation, the moving contact is pushed upwards at which time the con-tacts engage and the cylinder is filled with gas again.

The ED SK circuit-breaker is operated by a motor-operated spring closing devicetype FSA.

1HYB800001-26 Rev. APage 1

Functional ValuesSF6 BREAKER TYPE ED-SKS 1-1 (72.5 kV) WITH OPERATING DEVICE TYPE FSA 1

Closing time max. 60 msOpening time max. 35 msON-OFF time *) max. 40 ms

Demand of time difference between poles.

Unearthed capacitor bank.

Pole C1 Pole B1 Pole A1

Closing time 50 Hz ts ts ± 0.5 ts + 5.0 +1.0/-0.5Closing time 60 Hz ts ts ± 0.5 ts + 4.2 +1.0 -0.5

Earthed capacitor bank. Pole C1 Pole B1 Pole A1

Closing time 50 Hz ts ts +3.3 ±0.7 ts + 6.7 ±0.7Closing time 60 Hz ts ts +2.8 ±0.7 ts + 5.6 ±0.7

Resistance of the main circuit across a breaking unit: Max. 50 at rated current 2000A/1600 A.

*) ON-OFF time means the time during which the main contacts are closed at aclosing operation when the tripping impulse is connected in simultaneously, viathe auxiliary contact.


Types of Lubricants for Switching DevicesAs a guide to the selection of Lubricants and oils, a description is given below of therange of applications.

Oil “A” :

Thin lubricating oil for precision parts in operating mechanisms and air-blast circuit-breakers. Also for relubricating of bearing, which can not be lubricated with greaseG without dismounting -e.g. links and link gears. Viscosity at 400C: 62-65 cSt.

Oil “C”:

Circuit-breaker oil with viscosity~17 cSt at +200C. Suitable only for temperature > -100.

Oil “D” :

Circuit-breaker oil with viscosity~6.0 cSt. at +200C. Shall also be used as oil indashpots. For dashpots with the letter “S” stamped on the cover - oil “S” shall beused.

Oil “S” :

Silicon oil intended for oil dashpots in heavy operating mechanisms. Only dashpotswith the letter “S” stamped on the cover shall be filled with this oil.



Grease “G” :

Low temperature grease for all types of bearings, gears and worm gears as well asvalves in air-blast circuit-breakers. Also suitable for lubrication of silverplated con-tacts in air (e.g. contacts in disconnectors).

Also used when greasing O-rings made from nitrile rubber and as a crevice corrosionprevention.

Grease “N” :

For lubrication of moving contacts in SF6-insulated circuit breakers (e.g. puffercylinders). A very thin layer of the grease shall be rubbed on the sliding surface ofthe contacts.

Grease “L” :

Low temperature grease specially suitable for lubricating of fine mechanics-e.g. catchdevices in operating mechanism which shall operate in strong cold.

Grease “M” :

Low temperature grease for long-duration and permanent lubrication of worm gearsand other machine elements. Prevents wear and corrosion.

Grease “P” :

Vaseline for treatment of contact surfaces in current conductor joints.

Grease “R” :

EP-grease for heavily-loaded roller bearings, slide bearings, cam discs and catches(Lithium grease. Solvent refined mineral oil with lithium soaps and molybdenumdisulphide) in operating mechanisms type FSA.

Grease “S” :

Fluoro-silicone grease for greasing of O-ring made from EPDM and as a corrosionprevention of gaps in circuit-breakers type ED.

Grease “SV”

Grease for lubricating moving contacts, silver plated connections and brushedaluminium surfaces in fixed joints outdoors.

Locking Liquid For ThreadsAs a guide to selection of locking liquids, a description is given below of the range ofapplications.

Pre-treatment of surfaces : The surfaces shall be free from oil, grease, wax, paint andrust-preventive. Locking Liquids “A”, “B” and “C” are designed for use in only surfacesalso.

Locking Liquid “A” : Weak locking and setting of set screws.

Locking Liquid “B” : Medium strong locking of threads and sealing of screws andnuts.

Locking Liquid “C” : Strong locking and sealing of studs and bolts up to M36.Difficult to dismantle.

Locking Liquid “D” : Locking of fasteners after assembly or adjustment. Sealingof porous weld joints, castings and sintered materials. Thesealing is very resistant against pressure, solvent andchemicals. Can be used only on clean, dry surfaces. Oilygoods to be washed with trichloroethylene, preferably steam-washing.

Locking Liquid “E” : To pre-treat PTFE at locking of a thread connection PTFE/metal


LOCTITE Ltd.

LOCTITE Ltd.

General Instructions for Maintenance,Transport & Storage

Contents :

1. Safety precautions

2. Cleanliness

3. Cleaning

4. Waste disposal

5. Emptying of gas

1HYB800001-30 Rev. A

1. Safety precautions Follow the local high-voltage safety regulations. Put the breaker in the “OPEN”position.

Disconnect and earth the high voltage side.

Disconnect the operating and heating voltage.

Work on the insulators of the breaker or live parts as well as transport anddismounting of complete breaking poles may not be done before the breaker isemptied to a max. pressure of 0.15 MPa abs. Before the opening of the normallypressurised vessel, it shall be emptied completely to atmospheric pressure. If thegas is emptied into the free air, this shall be done through a dust and absorption filter.See under clause “Emptying of gas”.

2. CleanlinessVery high dielectric requirements are placed on the SF6 gas and on the insulatingparts and correspondingly also on their cleanliness and dryness.

On all work on the open circuit breaker, be aware that not only dirt but also airmoisture and hand perspiration are deleterious.

If for any reason gas spaces or parts thereof are exposed to air for longer than 24hours, the gas spaces are to be closed temporarily and filled with SF6 gas to Pabs =120 kPa (1.2 bar). Single parts are to be sealed in plastic bags and kept in storage.

Unused SF6 gas is non-poisonous, odourless and colourless. However, it is heavier

than air and with substantial outflow, it gathers easily in low situated spaces likecable trenches, tanks and such.

With large amount of SF6 in these spaces, there is a risk of suffocation due to lackof oxygen.

- Perform overhaul work only with adequate room ventilation.

- The decomposition products which are formed in the breaking elements are incombination with humidity corrosive and can cause skin, eye and mucousmembrane irritation. During the opening and internal cleaning of the breaker, aclose fitted mask with a filter against fine dust and acid gases, protectiveplastic or rubber gloves and a long sleeved overall shall be used.

The dust (decomposition products), that is formed in the breaker, shall be suckedwith a vacuum cleaner provided with a dust filter and wiped off with a cloth that issprinkled with ethanol or toluol.

All the dust as well as the used absorption agent is stored in a sealed container andis disposed off as chemical waste according to the valid provisions. During wastedisposal and handling with decomposition products, it is necessary to wearprotective gloves.

Drying cloths, protective gloves and vacuum cleaner bags shall be rinsed carefullywith plenty of water.


3. CleaningA. Insulator with paint-treated plastic outside surface, silicon rubber sheds or porce-

lain insulator.

Rinse the outside surfaces thoroughly with water and let it dry well before thebreaker is opened.

The end and inside surfaces are cleaned with a non fluffy drying cloth soaked withethanol.

Cleaned insulators must be touched only with clean protective gloves (plastic orrubber).

Cover the end surfaces of the insulators with a strong plastic foil to protect fromrecontamination.

B. Single parts

Vacuum immediately after disassembly with a vacuum cleaner with a fine dustfilter. Wipe off persistent dust with a non fluffy cloth.

Remove stubbornly adhering dust with a cloth soaked with ethanol.

Cover cleaned details with plastic foil or put in plastic bag.

Details from spaces not filled with SF6 shall be cleaned with ethanol and then leftto dry in air. Then they are packed in plastic bags.

4. Waste disposalAll the dust as well as the used absorption agent is stored in a sealed container andis disposed off as chemical waste according to the valid provisions. During wastedisposal and handling with decomposition products, it is necessary to wear protectivegloves.

5. Emptying of gasThe breaker is evacuated by means of the gas treatment equipment, that purifies andcompresses the gas, so that it can be reapplied.

Mixed gas - SF6 + N2 - can only be reapplied if the mixing conditions are undercontrol.

After the evacuation, the breaker is filled with nitrogen up to atmospheric pressureand after this, evacuated again. In this way, the eventual free drifting dust in thebreaker is removed.

Finally the breaker is filled again with dry nitrogen up to atmospheric pressure afterwhich it is ready for dismounting and transport to the workshop.

NOTE

If work on the circuit-breaker only affects the outside of the breaker, for examplecleaning of the insulators, it is sufficient to empty the breaker down to a pressure of0.15 MPa abs, normal working pressure.


GOODS MARKING AND TRANSPORTGeneral

Each case is marked with markings as per Packing list.

In addition they are marked with following :

- Glass, porcelain, handle carefully

- Up

- Put the lifting slings here

- It is not allowed to tilt the transport unit more than 45 degrees

- Centre of gravity

- Must be protected from moisture and rain

Figure 1 Transport unit

The circuit-breaker should be transported in their transport units, and particularlynever be transported unpacked. While choosing conveying equipment, thefollowing should be observed :

• Packing case markings• The distance and road conditions

The units should be transported in such a way that they are

- Prevented from standing in water- Not exposed to rough handling and damages- Covered by at least tarpaulin, protected against water

Every transport unit must be fixed during the transport. The tying must be soarranged that the transport units can not move in any direction. Velocity should beadapted to the road conditions. Violent acceleration or retardation can cause damageto the contents without damaging the packing.

DO NOT TILTMORE THAN 45”


Lifting

Before lifting, the symbols on the transport unit (such as centre of gravity, weightetc.) should be observed. The transport units should be lifted with a lifting machineprovided with forks of slings (see fig. 2). If a crane is utilised slings should be used.The units may not be rolled or dropped from the conveying or lifting equipment.

Figure 2 Lifting a transport unit

Lifting the operating mechanism out of the transport unit

The operating mechanisms FSA should be lifted by the lifting devices on top of thecubicle. Lifting slings should never be used around the operating mechanism (see fig.3)

Figure 3 Lifting the operating mechanism

Lifting the breakers out of the transport units

Lifting the breakers out of the transport units is only necessary just before erection(see product information, which can be found in the cubicle of the operatingmechanism). If they are going to be stored, see “Storage prior to erection”.


Stacking

Transport units with different widths may not be stacked (the pressure may break thecover of the lower transport units. It should be noted that stacking causes sidewaysinstability, and therefore the load has to be fixed, i.e. prevented from dropping, rollingor falling. It is not allowed to stack more than three transport units.

Figure 4 Stacking


Storage prior to erection

General

Circuit breakers intended for outdoor operation are generally delivered in units whichare determined for transport reasons. Intermediate storage of these units should beavoided. If it is not possible to avoid intermediate storage, they should be storedindoors or under a roof. They must also be stored above ground level to preventwater damage. On arrival, it is important that plastic sheets are removed in order toprevent corrosion by condensate water (except for the spare parts).

Storage in a humid climate without proper ventilation may lead to discoloration of thegalvanised surface. This discoloration is commonly known as “white rust”, consistingmainly of zinc oxide and zinc hydroxide and is a result of a chemical processbetween the pure zinc on the surface and moisture.

The long term corrosion protection is not influenced, since the iron-zinc layer belowthe surface remains unaffected. The presence of white rust is no reason for rejectionof goods.

On arrival, each unit should be checked in the following way :

- delivery is in accordance with order and delivery documents

- any damage in delivery, and material loss

In cases where damages are detected or suspected, the units should be opened anddamages should be photographed. Both damages and shortages should be reported.

All details should be rationally stored so that they are always available. In general, allmaterial should be stored in an approved storage (note 1), exceptions are given inthe text below. The ambient air should not be heavily contaminated by dust, smoke,corrosive or combustible gases, vapours or salt, otherwise the equipment has to becleaned before erection.

For storage the original transport unit may be used, but the plastic sheeting shouldbe removed. The coupling joints of the assemblies, as well as all connections, arefitted with transport covers or protective caps which shall not be removed untilimmediately before erection.

Operating mechanism (for circuit breakers)

The operating mechanism should be unpacked on arrival. If it is not going to bestored in an approved storage (note 1), the heating elements must be connected andsupplied permanently with power to protect the control equipment from corrosion orfreezing damages.

Circuit Breakers

The breakers should be stored in their original transport unit, where they are wellprotected from damages. The units shall be prevented from standing in water. Thebreakers may be stored outdoors, except for the EDI-breaker, which should be storedin an approved store. If the breakers are stored outdoors they should be covered witha tarpaulin. (Note 1)


The tarpaulin should not be placed directly on the galvanised surface. An air gapshould be left to prevent condensation. Condensation that may occur should be self-draining.

For the outdoor breakers, the minimum ambient temperature allowed is -300C. For theindoor breakers, the minimum ambient temperature allowed is -50C.

Spare parts

The spare parts shall be stored indoors in an approved storage (note 1), in theiroriginal units. This is in particular valid for rubber parts (sealings etc.), which alsohave to be protected against light and sun, in order to prevent them from ageing.Gaskets can be stored only for limited periods, so avoid storage of these parts.Structures may be stored outdoors.

Notes 1 :

We define an approved storage as a storage with

- roof- solid ground- relative humidity less than 50%- temperature 200C (+/-100C)


1HYB800001-33 Rev. A

Information on SF6 Gas and Gas mixture types SF6/CF4and SF6/N2 when used as breaking and insulation media

Contents :

1. Introduction

2. Thermal and dielectric breaking capacity

3. Chemical reactions in Circuit Breakers

4. Criteria for choice of mixed gas

5. Filling mixed gas

6. Measuring gas mixing proportions

7. Technical data for SF6, CF4 and N2 gases

8. Safety regulations

8.1 Safety regulations for SF6 gas

8.2 Safety regulations for CF4

8.3 Safety regulations for SF6 and CF4 gases whichare exposed to arcs

9. Environmental effect.

1. IntroductionSF6 gas has become the predominant breaking and insulation media for circuit-breakers of puffer and Auto-PufferTM types.

At low ambient temperatures, below - 300 or -400C (depending on filling pressure),there is a risk of condensation of SF6 gas resulting in drastic density changes. Thetemporary condensation at low temperatures is not dangerous but can causeproblems in density monitoring and, temporarily, some reduction of breaking capacity.One way of avoiding this is to fill sulphur hexafluoride SF6 to a lower density and fillup to rated density with nitrogen N2 or tetrafluormethane CF4.

Information on characteristics and regulations for SF6 gas, N2 gas and CF4 gas isstated in this product information.

2. Thermal and Dielectric Breaking CapacityWhen breaking short-circuit currents the circuit-breaker must withstand two separatestresses at somewhat different times, See Figure A.

2. Dielectric region

Figure A.Stress on a circuit-breaker at breaking moment

Gas flow

Figure B.Cooling SF6 arc by cold gas mixture


These stresses are :

1. Thermal range

At current zero the hot arc channel shall be cooled down quickly to a temperaturewhich makes it electrically non-conductive, Figure B. Cooling capacity depends onhow quickly the current decreases towards zero, di/dt, and on the rate-of-rise of therecovery voltage after current zero, du/dt, Figure A.

2. Dielectric range

After current zero the circuit-breaker must, for a short moment, withstand the full topvalue of the transient recovery voltage without dielectric breakdown.

Breaking of terminal fault often gives low rate-of-rise of the recovery voltage and isoften a problem in the dielectric range.

Breaking of distance fault is a problem usually concentrated to the thermal area.

SF6 is an electronegative gas of high density with good characteristics in both thethermal and dielectric ranges.

Mixed gas filling of SF6 and N2 gives a somewhat deteriorated thermal breakingcapacity as well as a slightly deteriorated dielectric breaking capacity compared withonly SF6 gas filling. Mixed gas filling with nitrogen often results in a reduction ofbreaking capacity, e.g., a rated breaking current of 40 kA is reduced one step to 31.5kA. The deteriorated dielectric characteristics can be compensated by nitrogen gasfilling to a slightly higher pressure than with only SF6 gas.

Mixed gas filling of SF6 and CF6 results in practically unchanged thermal anddielectric breaking characteristics. A mixed gas filled circuit-breaker with SF6/CF4

often retains its breaking capacity down to the lowest ambient temperature.

3. Chemical Reactions in Circuit-Breakers

When an arc burns in the arc chamber, part of the SF6 gas decomposes but isquickly restored to SF6 gas when the temperature falls. Heat from the arc added togas, contact material, nozzle material, as well as small amounts of moisture residue,give chemical reactions. The most important of these are :

Arc in teflon nozzle

Teflon is degraded to pure carbon and CF4 gas.

heat

CF3-(CF2)N - CF3 ➞ CF2 (1)

heat

2CF2 ➞ C + CF4 (2)

Arc in SF6 gas

heat

SF6 ➞ S + 6F (3)


The carbon which is formed according to (2) reacts with fluorine atoms which areproduced according to (3) and form CF4 gas, whereby the carbon is bound andcarbonisation is avoided.

4F + C➞ CF4 (4)

CF4, which is an electronegative gas, is therefore formed when the arc affects theteflon nozzle and SF6 gas.

Chemical reactions between gas formation and possible moisture residue on surfacesin breaking units.

SF4 + 2H2O ➞ SOF2 + 2HF (5)SOF2 + H2O ➞ SO2 + 2HF (6)

Reactions between hydrofluoric acid and porcelain

SiO2 + 4HF ➞ SiF4 + 2H2O (7)

Reactions at copper-tungsten contacts

heatSF6 + Cu ➞ SF4 + CuF2 (8)

heat3SF6 + W ➞ 3SF4 + WF6 (9)

Degraded gases which can appear in SF6 breakers after a number of years’ serviceare SOF2, CF4, SiF4 and SO2.

The powder which remains in the breaker poles consists of formation of fluorides.

In the gas analysis of mixed gas circuit-breakers with SF6/N2 and SF6/CF4 no otherdegraded products than the above mentioned have been identified.

4. Criteria for choice of mixed Gas

By mixed gas is always understood a mixture of SF6 and nitrogen gas or SF6 and CF4.Nitrogen gas and CF4 are both easily available at gas suppliers. CF4 is comparativelyexpensive but it is a natural choice since this gas is formed already when the arcerodes teflon nozzles in SF6 circuit-breakers. See formulae (2) and (4).

Criteria for choice of gas :

SF6 gas is chosen for ambient temperatures down to -300C or -400C

Gas Lowest Filling pressure at +200C Breaking dataambient absolute pressure

temperature

SF6 -300C 0.7 MPa Depends on type of circuit-SF6 -400C 0.5 MPa breaker


Mixed gas is chosen for ambient temperatures down to -550C

Gas Lowest Filling pressure at +200C Breaking data inmixture ambient absolute pressure comparison

temperature with SF6 filling

SF6/N2 -550C 0.36 MPa SF6+0.34 MPa N2=0.7 MPa Reduction onebreaking current step

SF6/CF4 -550C 0.36 MPa SF6+0.34 MPa CF4=0.7 MPa Retains breaking capacity

This table is only for information. It is always the relevant product information forrespective circuit breakers which is valid.

5. Filling mixed GasMixed gas is always filled in such a sequence that SF6 is filled first and then CF4 ornitrogen gas is filled up to rated pressure at +200C according to the rating plate.

By filling SF6 first a satisfactory gas mixture, without layers of gas, is alwaysobtained. Otherwise, the mixing process takes a long time since it is based ondiffusion and convection. At gas loss, for example due to leakage, refill with correctmixing proportions and always with SF6 gas first.

6. Measuring Mixing ProportionsMixing proportions for mixed filling can be measured by DILO “SF6 PercentageMeasuring Device 3-027”.

The instrument measures the sound velocity of the gas mixture and it is calibrated forSF6/N2 gas. The instrument shows directly on the display the volume of the SF6 part.

If the instrument is used to measure SF6/CF4 gas mixture, the result shown on thedisplay must be corrected according to figure C. (Example: If 51% is read on theinstrument, the SF6 part is 0% and the CF4 part 100%)

100

90

80

70

60

50

40

30

20

10

050 60 70 80 90 100

DILO

DISPLAY

SF6 (%)

In

SF6/CF4

Figure C.SF6 part in SF6/CF4 gas as a function ofthe shown result on the display of DILO 3-027.


7. Technical Data for SF6, CF4 and N2 GasesGeneral SF6 CF4 N2

information: Max. bottle pressureat 200C 2.3 MPa 13.7 MPa 20 MPa

Valve thread (local G5/8A-RH CGA580 G5/8A-RH& national deviationscan occur)

Material recom- No re- Avoid Nonemendation strictions zinc

magnesium

Hygienic limit: 1000 ppm - -

Characteristics: No colour No colour No colouror smell or smell or smell

Health risks : Suffocating Suffocating Suffocating

Transport: ADR ADR ADRClass 2.5(a) Class 2.1(a) Class 2.1(a)

Storage: - Group 1A Group 1A

Physical data: Molecular weight 146.05 88.01 28.01

Boiling pointat 1.013 bar 0C -63.8 -127.94 -195.8

Density(1.013 bar 150C)kg/m3 6.25 3.74 1.185

Vapour pressureat 00C MPa 1.26 - -

Vapour pressureat 200C MPa 2.3 - -

Combustible Non-combust. Non-combust. Non-combust.range in air

Specific volume m3/kg(1.013 bar, 150C) 0.160 0.268 0.844

Critical temperature 0C 46

Critical pressure MPa 3.7


8. Safety Regulations

8.1 Safety Regulations for SF6

“SAFETY REGULATIONS FOR SULPHURHEXAFLUORIDE”

HEALTH RISK

Sulphurhexafluoride is considered to be an inert gas.

INHALATION of very high gas content can cause headache, giddiness andrisk of unconsciousness and suffocation due to lack of oxygen.

SPECIAL CHARACTERISTICS AND RISKS

At high temperatures degraded products, which cause irritation, can be formed.

PREVENTIVE MEASURES

Good ventilation.Safeguard gas bottles with chains.

PERSONAL PROTECTIVE EQUIPMENT

Inhalation apparatus for use at suffocating gas content.

FIRST AID

Inhalation: fresh air, rest

SPILLAGE AND DEGASSING

Airing

MEASURES AT FIRE

Gas containers near the fire must be removed immediately or cooled withwater.

8.2 Safety Regulations for CF4 gas

“SAFETY REGULATIONS FOR TETRAFLUORMETHANE”

HEALTH RISK

Tetrafluormethane is considered to be an inert gas.



At high temperatures degraded products, which cause irritation, can be formed.

PREVENTIVE MEASURES

Good ventilation.Safeguard standing gas bottles with chains.



Inhalation apparatus for use at suffocating gas content.

FIRST AID

Inhalation: fresh air, rest.


Airing

MEASURES AT FIRE

Gas containers near the fire shall be removed immediately or cooled withwater.

8.3 Safety Regulations for SF6 and CF4 gases which are exposed to arcHEALTH RISK

Air humidity together with degraded products can cause irritation of skin,eyes, and mucous membranes.



Since the gas has been exposed to high temperatures degraded products,which cause irritation, have been formed.

PREVENTIVE MEASURES

Good ventilation.

Gas from circuit-breakers can be recovered in gas treatment equipment and reused.


Fresh air mask or mask with filter against fine dust and gases with acid content.

Plastic or rubber gloves.

Overalls with long sleeves.

Vacuum cleaner with filter for fine dust.

FIRST AID

Inhalation: fresh air, rest.

Skin and eyes: rinsing with water.



Airing

Dust and filters shall be stored sealed and handled as chemical refuse according tolocal regulations.

MEASURES AT FIRE

Gas containers near the fire must be removed immediately or cooled withwater.

9. Environmental EffectSF6 and CF4 gases can leak out into the surrounding environment due to leakage inthe circuit-breaker.

CF4 and SF6 are very stable gases and make no detectable contribution to ozonedestruction and photochemical smog, and they have negligible influence on the greenhouse effect. The latter applies especially when used in circuit-breakers where, fromthe global point of view, gas volumes are small.


Safety Provision and Assembly Instructions for Circuit-Breakers with Operating Device.

Read carefully the entire Assembly Instruction before starting assembly work.

WARNING TEXTS

Warning texts are stated in 5 different degrees of urgency which should be carefullyobserved. These are described below :

DANGER indicates an immediate risk situation that can lead to death or seriouspersonal injury if not avoided.

Warning indicates a risk situation that can lead to death or serious personal injury ifnot avoided.

Caution indicates a risk situation that can lead to small or moderate damage.

Note is used when there is danger that can lead to equipment damage only.

Important indicates an operation or a suggestion for handling.

Note

Important

DANGER

Warning

Caution


1. Safety Regulations

When working on high-voltage circuit-breakers the below-mentioned risks must betaken into consideration and corresponding safety measures taken.

RISK

1. Work next to high-voltage

2. Work on ladders and platforms

3. Work with low-voltage.Both D. C. and A. C. voltage may have beenconnected on the operating device.

4. Squeezing risk in operating device andlink system.

The spring operated device has energystored in the closing spring. The openingspring, which is on the mechanism housing ofpole C1, or on every pole for one-poleoperation, has energy stored. The device canbe activated by heavy vibrations orunintentional slight touch on mechanical latchparts.

5. Work on pressurized porcelain insulators.Normally, the work pressure is up to 0.7 MPa.Damage in the porcelain can cause theporcelain to break,

MEASURE

Warning plate placed inside the door to theoperating device

Disconnect and earth near the workplace. If workmust be carried out near energized parts of theplant, it has to follow local safety regulations of theorganisation responsible for the circuit-breaker.

The work shall follow the directions of the Authorityfor occupational safety and health. Avoid work insevere weather conditions which entails a greatdeal of climbing for short periods.

Do not connect control or heating voltage until allconnection work is completed.

Warning plate is placed on the supporting frame.

No work must be carried out unless the closing andopening springs are uncharged and the circuit-breaker in position OFF “O” disconnect voltage tothe motor.

- The operating device must not be operatedunless it is connected to the circuit-breakerand the electric cables are connected. Thecircuit-breaker shall be filled with SF6 gas toa pressure of 0.7 MPa. The closing springsshould for safety reasons be unchargedduring transport and when the circuit-breakeris off duty.

Work close to the insulators of the circuit-breaker,which entails risk to damage the porcelain, mustnot be carried out until the gas pressure has beenlowered to 0.125 MPa absolute pressure.


2. Unpacking

Place the case hoizontally on a flat surface before opening the cover.

Check that all parts are included in the delivery. Check-off on the accompanyingpacking list.

Check that no parts have been damaged during transport, especially the porcelaininsulators.

Report any faults immediately to the ABB Representative.


The information in this document is subject to alteration without prior notice and should not be regarded as anundertaking from ABB Limited. ABB Limited takes no responsibility for errors that can occur in the documen-tation.

ABB Limited is not responsible for damage incurred due to the misuse of this document.

The document, or parts thereof, may not be reproduced or copied without prior permission from ABB Limited.It may not either be imparted to third pary or otherwise be used without authorisation. Infringement hereof willbe subject to action in accordance with applicable laws.

© ABB Limited

Information

Disposal and Recycling

1HYB800001-36 Rev. A

Contents

1. Disposal and recycling

1.1 General

1.2 Taking care of spent equipment

1.3 The circuit-breaker’s component parts

1.4 SF6-gas

1.5 Porcelain

1.6 Electronics

1.7 Metals

1.8 Plastics

1.9 Oils and greases

1.10 Rubber

1.11 Other materials

1HYB800001-36 Rev. A

1. Disposal and recycling

1.1 General

ABB Limited attempts to minimize environmental impact during the entire product’sservice life. Environment aspects are held in focus during technical and productdevelopment. We always try to consider the eco-cycle while the material’s impact onthe environment and possibilities of recycling are observed. Manufacturing processesare selected that are as gentle as possible on the environment.

1.2 Taking care of spent equipmentSpent products should be taken out of service in an environmentally correct manneraccording to the following instructions.

When discarding used equipment a great deal of material and the energy content ofthe material can, after sorting and cleaning, be recycled. The degree of material thatcan be recycled varies depending on the technical resources and experienceavailable in respective countries.

Non-recyclable components shall be left at an approved recycling centre fordestruction or disposal.

1.3 The circuit-breaker’s component partsA circuit-breaker contains approximately 30 weight % metal, primarily iron, steel andaluminium. Rubber and different plastics make up approximately 0.5% each andchemicals and gas less than 0.5%. The greatest weight share in a circuit-breaker,virtually 70%, is made up of porcelain.

1.4 SF6-gasThe SF6-gas must be emptied before discarding a circuit-breaker. Care shall beexercised in accordance with applicable regulations with all handling of SF6-gas, toprevent gas leakage. The gas can be taken care of in different ways depending onthe circumstances :

● Regenerated on site, and reused in other equipment

● Sent to a gas supplier for regeneration

● Sent for destruction at a special waste disposal centre

In those cases where the circuit-breaker is filled with mixed gas, the SF6-gas isseparated from the mixture for continued handling as set out above. Alternatively, thegas mixture can be sent for destruction without being separated.

ABB Limited will willingly take care of the gas when the circuit-breaker is to bediscarded.


1.5 Porcelain

Porcelain can, after cleaning, be left for disposal or used for other purposes, forexample, as a filling material.

1.6 Electronics

Leave electronic equipment at an approved recycling company or sort out itscomponent parts and take care of them accordingly.

1.7 Metals

Sort metals according to type and surface finish and leave at an approved recyclingcompany. After the removal of any paint or other surface treatment, the metal cangenerally be melted down and used in new products. Many iron, steel and aluminiumparts are large and easy to identify, for example, the frame and mechanism housing.

ABB Limited aims for a reduction in the use of noble metal, or with dischargeenvironmentally hazardous metals. Recycling of these is extremely important.

Noble metals such as copper and silver are expensive and only occur is smallquantities in the earth’s crust. Copper is primarily used in the current paths, puffer,contactors and cables. Silver plating of contactors can occur. Some metals can causedamage if discharged. This applies, among others, to copper, but also to zinc andnickel which are used sparingly in the form of surface treatment.

1.8 Plastics

Separate different types of plastic and leave at an approval recycling centre orrecycling company. The energy content in thermoplastics and thermosetting plasticscan frequently be recovered through combustion in purpose built installations.Generally, thermoplastics can be melted down and used again without degradingquality too much. Composites can be fractionised and used as filling agent in othermaterials or be left for disposal.

Composites found in small quantities in isolators, pipes and cable glands consist ofthermosetting plastic. Thermoplastics can be found in components such as guiderings, belts bushings and support rings. Thermoplastic in ferrules, nozzles, pipes andcollars contains fluorine and is not suitable for recycling, however, it can be disposedof without the risk of leaking hazardous substances.


1.9 Oils and greases

Empty oils, grease and the like before discarding and leave at an approved recyclingcentre or at a recycling company. Oil waste can be separated into oil, water anddifferent contamination through the use of gravimetric forces. In many cases the oilcan be reused. Alternatively, the oil’s energy content can be recovered throughcombustion in purpose built installations.

Oil can be found in dashpots and grease is used as a lubricant.

1.10 Rubber

Rubber can be left at an approved recycling centre either for disposal or reused fordifferent purpose.

Rubber can be found in seals.

1.11 Other materials

Sort and leave other materials at an approved recycling centre.


SF6 CIRCUIT-BREAKER type EDF SKS 1-1Rated voltage 52-72.5 kVWith operating mechanism type FSA 1(F)

INSTRUCTIONS FOR ERECTION,OPERATION AND MAINTENANCE

CONTENTS

1. GENERAL

2. DESIGN

3 . FUNCTION

4. ERECTION

5. COMMISSIONING

6. TROUBLESHOOTING

7. MAINTENANCE

8. SPARE PARTS AND MATERIAL FOR OVERHAUL

11 APPENDIX

1HYB800001-54 Rev. A

Contents Page1. GENERAL 1

1.1 Validity 11.2 Type designation 11.3 Technical data 11.4 Masses 11.5 Storage 1

2. DESIGN 2

2.1 Breaker pole 22.2 SF6 gas system 2

3. FUNCTION 2

3.1 Control and monitoring 23.2 Switching operations 33.2.1 Starting conditions 33.2.2 CLOSING operation 33.2.3 OPENING operation 3

4. ERECTION 3

4.1 General 34.1.1 Preparation for erection 34.2 Erection procedure 44.2.1 Fitting motor-operated

spring-closing mechanism 44.2.2 Fitting the connecting rod 44.2.3 Fitting density monitor and cables 44.2.4 High-voltage connections 4

5. COMMISSIONING 5

5.1 Starting conditions 55.2.1 Filling SF6 gas to rated pressure 55.2.2 Filling “mixed gas” to rated pressure 65.3 Function test 65.3.1 Trial switching operations 75.3.2 Anti-pumping device 75.3.3 Control of heater 85.4 Concluding work 85.5 Checklist for Assembly and Commissioning 9

6 TROUBLESHOOTING 13

6.1 SF6 gas system 136.2 Control circuits 13

7. MAINTENANCE (OVERHAUL) 147.1 Maintenance Summary 157.2 Maintenance category A 167.3 Maintenance category B 177.4 Maintenance category C 197.5 Maintenance category D 247.6 Table of parts to be serviced 25

1HYB800001-54 Rev. A

7.7 Tools, Jigs, Fixtures & Accessories 267.8 Maintenance Procedures 267.9 Preparation for overhaul 267.9.1 Taking Circuit Breaker out of Service 267.10.1 Dismantling of SF6 gas lines 267.10.2 Removal of breaker poles & mechanism

housing 267.11.1 Disassembly of breaker pole B1 277.11.2 Disassembly of fixed contact 287.11.3 Disassembly of moving contact 287.11.4 Cleaning 287.12 Overhaul of component groups 287.12.1 Overhaul of fixed contact 287.12.2 Overhaul of moving contact 297.12.3 Overhaul of link gear 307.13 Assembly of breaker pole 307.14 Erection of breaker poles 327.15 Overhaul of spring operating mechanism 33

8. SPARE PARTS AND MATERIALFOR OVERHAUL 33

8.1 General 338.1.1 Important directions 338.1.2 Ordering spare parts and material

for overhaul 338.2 Spare part lists for overhaul 338.2.1 Set of contacts for one breaking unit 338.2.2 Set of gaskets, springs, fasteners for one

breaker pole 338.2.3 Complete set of gaskets for gas

monitoring system 348.2.4 Set of gaskets for one link gear 348.2.5 Spare parts for FSA-1 348.2.6 Overhaul tools for EDP SK 358.2.7 Gas filling equipment 358.2.8 Safety disc unit 36

11. APPENDIX 37

11.1 Figure sheets 37


1 GENERAL1.1 Validity

This document covers high-voltage circuit-breakers, type EDF SKS.

Type designation EDF SKS means that the circuit-breaker has been adapted tosynchronous coupling. The adaptation is carried out in the mechanical arm and linksystem in the circuit-breaker mechanism housing, so that there is a time difference incontact closing or contact opening.

When connecting capacitor stacks, for example, the following time differences can occur.

Earthed capacitor stack

Pole A1 Pole B1 Pole C1 +6.66 ms +3.33 ms 0 for 50 Hz (after pole C1) (after pole C1)

Unearthed capacitor stack

Pole A1 Pole B1 Pole C1+5 ms 0 0 at 50 Hz(after poles Bl and C1)

1.2 Type designation E D F SK S 1 - 1SF6 gas insulation

Generation

Outdoor design

Type of arcing chamber

Synchronous coupling

Circuit-breaker designInsulation BIL Rated voltage1 ~ 325 kV ~ 52/72.5 kV

Number of breaker chambers

1.3 Technical dataTechnical data can be seen in order-related documentation and rating plate (fig.1/1). Thediagrams in this instruction are mainly intended to explain the functional principles.

1.4 MassesInformation about masses for a three-pole circuit-breaker can be found in the orderdocumentation and delivery documents. For internal transport, see fig. 1/2.

1.5 StorageThe circuit-breakers intended for outdoor operation are usually dismantled in suitableunits for delivery. Before erection, these units should as far as possible be storedindoors or under roof. If the units are to be stored outdoors, they shall be blocked up sothat they do not stand in water. If the units are to be stored outdoors for a long time,they should be covered with tarpaulins and have their heating elements switched on.


2 DESIGN (fig. 2/1)- Circuit-breaker type EDF SKS 1-1 is a three-pole SF6 circuit-breaker.

The circuit-breaker consists mainly of:

- three breaker poles 10171 with rating plates A1, B1 and C1- support frame 10172- control cubicle with spring operating mechanism and connecting rod 10173- density monitor 10112- breaker support 10174

2.1 Breaker pole (fig. 3/la, b:1,2,3)The breaker pole consists mainly of:

- upper terminal flange 10099 *)- breaker chamber insulator 10106- fixed contact compl. 10030- moving contact compl. 10013- lower terminal flange 10108- post insulator- link gear 10185

*) On this flange there is a cover which can easily be exchanged by a safety discunit, if the customer so wishes.

The poles are filled with SF6 gas (transport pressure) and connected to a headerblock via tubes (fig. 4/la,c).

2.2 SF6 gas system (fig. 4/1a,c)The gas system consists of:

- an SF6 gas density monitor 10112 with header block 10118- check valve 00112 (fig. 7/5)- SF6 connection line L10177/a, L10177/b and L10178

3 FUNCTION3.1 Control and monitoring (Fig. 3/2)

The electrical principle drawing shows how the switching commands enter the controlcircuit of the circuit-breaker, the monitoring units which are built in to sense anyinterference which might occur, and the signals which are then triggered.

The control circuit itself can be seen in the order-related circuit diagram.

Monitoring unit:

- Gas densityThe density monitor 10112 (temperature compensated pressure monitor)monitors the insulation gas pressure in the breaker poles and sends, via itsauxiliary contactor, the signal “filling of SF6 gas” if gas losses have occurred. Ifthe gas pressure decreases to a value below that shown in the blockingpressure curve, fig. 5/1, the CLOSE and OPEN operations are blocked andsimultaneously an alarm signal is given.


3.2 Switching operations (fig. 3/1a, b)3.2.1 Starting Conditions

- SF6 gas is filled to the rated pressure- The operating mechanism is in breaking position b2 (fig. 2/1), i.e. closing spring

charged and in OPEN position.

3.2.2 CLOSING operation (fig.3/1b)

- The switching command is issued via a control element “CLOSE”. Theoperating mechanism is then tripped and operates the moving contacts upwardsvia the mechanical transmission. Thereby first arc contact “g-h” is closed and,thereafter, the rated current contact “k-l”.

3.2.3 OPENING operation (fig. 3/1a)

- The switching command is issued via a control element “OPEN”. Theoperating mechanism is then tripped and operates the moving contactsdownwards via the mechanical transmission. Thereby, first the operating currentcontact “k-l” is opened and, thereafter, the arc contact “g-h”. During thismovement the piston compresses the gas in the cylinder. The arc which risesbetween the contacts increases the compression pressure. In the zero currentarea a gas flow occurs, which blows intensively on the arc and extinguishes it.

4 ERECTION4.1 General

- All adjustments have been carried out in the works.

All moving parts which shall be assembled together have already been adjustedand fixed in correct position in the works.

- Transport packing for breaker poles should be suitably kept to facilitate transport,if necessary, at later overhaul.

- Breaker poles are filled with insulation gas Pabs. = 150 kPa (~ 1.5 bar) in order toprevent any moisture absorption.

4.1.1 Preparation for erection

The following shall be prepared and procured before erection:

- Crane with a lifting capacity of approx. 850 kg and a hoist height of at least 4 mabove floor level.

- Lifting ropes

- Dimension drawing, erection drawings and circuit diagram.

- Circuit-breaker material according to erection drawings.

- Torque wrench 6...200 Nm with socket 24 mm (connection 3/8").

- Open-end/ring type wrenches for M6-16 and 1/2" UNC as well as open-end wrenchfor 36 mm.

- Normal thermometer for ambient temperature.

- Gas filling equipment and an SF6 gas cylinder

- SF6 leak detection instrument


4.2 Erection procedure- Lift the completely assembled circuit-breaker by crane according to fig. 4/2.

- Check the SF 6 gas pressure by pressing the disc of the check valve inwardswith a ø 5 pin. A distinct blow-off sound from the pole shall be heard. If there is noblow-off sound, the pole has a leak which must be repaired.

Place frame support 10174 on the foundation. The top supporting surfaces, where the polebeam is mounted, must be at the same level (horizontally). Screw the frame support to thefoundation. Observe tightening torque MD, fig. 2/1. The exact location is shown on theinstallation layout. Observe the location of the holes for the earthing clamp (fig. 2/1).

Mount the frame 10172, with assembled poles 10171, on the support 10174 withscrew, nut and washer, 49069, 49622 and 89027. Observe the tightening torqueMD=190 Nm, fig. 4/1a:1, 2.

4.2.1 Fitting motor-operated spring closing mechanism (fig. 4/1a:1,2)

Place the mechanism on a wooden structure in correct position for mounting betweenthe frames.

- Lift up the operating mechanism by the four upper eyes, place the bolts for theoperating mechanism in the holes intended for them and fasten with enclosedfasteners “h” (note the MD). Make sure the middle pole is not damaged by the sling.

CAUTION

During lifting the upper joint head of the connecting rod must be fitted into the fork onthe actuating lever 10154.

4.2.2 Fitting the connecting rod

- Starting condition: Indication of circuit-breaker position and spring charging showspositions “b1” and “uncharged”, respectively, (fig. 2/1).

- Couple the operating mechanism and circuit-breaker to each other in OPENposition, i.e. turn the actuating lever on the circuit-breaker towards the operatingmechanism until the actuating lever, 10154, stops and the hole in the connectingrod, f, correspond (fig. 4/1b).

- However, if holes do not correspond, the operating rod length must be adjusted.

- This is done by releasing the lower fasteners “g” (fig. 4/1a) and by lowering the cubicle.

- Release locknuts “h” and “k” of the operating rod (fig. 4/1b) , turn operating rod toadjust length. Tighten locknuts by holding the operating rod (Observe MD)

4.2.3 Fitting density monitor and cables

Connect the density monitor 10112, density monitor cables and pressure gauge, ifany, according to fig. 2/1, 4/1:1,2.

4.2.4 High-voltage connections (fig. 4/1:1,2)

The assembly parts for high-voltage connections consist of screw M12 (8.8) and atleast 1 washer 13/28x3 mm, 1 locking washer 13.5/28x1.6 mm on each side of thescrew. (Observe the tightening torque MD)


5. CommissioningAll data which are checked or measured are to be entered in a commissioning recordand preserved for comparisons.

The SF 6 gas pressure can be seen on the circuit breaker nameplate.

5.1 Starting conditionsThe erected circuit breaker is isolated from the high-voltage system and earthed accord-ing to regulations. The control current circuits are connected to the low-voltage system.

5.2.1 Filling of SF 6 gas to nominal filling pressure (Fig. 5/1)

As the circuit-breaker poles are delivered vacuum processed and filled with SF6 gasat a transport pressure of 0.150 MPa abs (200C), during commissioning only onefilling of SF6 gas is required, to top up pressure up to the filling pressure given on therating plate.

It is appropriate to carry out pressuring directly from an SF 6 gas bottle. In order toavoid risks at the first filling, due to possible transport damages to the porcelain, thegas bottle with filling equipment shall be placed as far from the circuit-breaker aspossible, and preferably behind some shield. Pole columns are connected to theheader block by pipes. Connect the hose from the gas filling equipment to the SF 6gas filling valve on the header block L10118 (Fig. 4/1c).

- SF6 gas filling (Fig. 4/1d)

● Place gas cylinder (1) in a protected area.

● Check the filling pressure and any gas mixture (at ambient temperature lowerthan -300C) on the circuit breaker’s rating plate.

● Fit the regulator (3) on the gas cylinder using appropriate coupling (2) suppliedwith gas filling device. Use the pressure gauge (9) for filing gas in circuit breaker.

● Lubricate the sealing rings supplied with density monitor (7) with grease “G”.

● Fit the density monitor on the gas valve (8) on the breaker.

● Connect coupling (4) supplied loose with gas filling bag to the non-return valveon the hose of gas filling device.

● Connect above assembly to the circuit breaker’s gas valve (5).

● Open regulator to fill gas in circuit breaker to rated pressure as per fig. 5/1.

● Allow the pressure to stabilise in the circuit breaker for some time. Check thepressure and adjust if necessary.

● Dismantle the hose coupling assembly from the gas valve on the circuit breaker.

● Close the valve on the gas cylinder.

● Disconnect regulator with hose from gas cylinder. Breaker is now ready forfunctional test as per section 5.3.

In the filling process the dependence of the nominal pressure on temperature (Fig. 5/1) must definitely be taken into account. After a temperature equalization period ofapprox. 1 hour, check the pressure and correct if necessary by adding or releasinggas. Check all sealing joints on the breaker poles and the gas supply system forleaks with a leak detector. Repair any leaks found according to chapter 6.


5.2.2 Filling “mixed gas” to rated pressure

When the circuit-breaker is erected in a climate with temperatures below -30°C, fill“mixed gas” instead of pure SF6.

In order to avoid condensation at temperatures below -30°C, mix the SF6 gaswith CF4 (carbon tetrafluoride) or N2 (nitrogen gas). The CF 4 gas has good breakingcapabilities, like SF6, while N2 gas often reduces the breaking capacity.

Choice of gas mixture:

Gas mixture Breaking data Network frequencyRated breakingcurrent

SF6/N2 25 kA 50 Hz20 kA 60 Hz

SF6/CF4 25 kA 50 Hz25 kA 60 Hz

The rating plate states the total filling pressure for mixed gas. The breaker poles aredelivered vacuum processed or filled to pressure 0.15 MPa abs. (20°C). Whencommissioning, first fill the SF 6 gas proportion, 0.36 MPa abs. at 20°C, and there-after N2 or CF4 proportions up to the total filling pressure according to therating plate.

Normally, gas filling is:

with SF6/N2 at 20°C0.36 MPa SF6 + 0.34 MPa N2 = 0.7 MPa abs.

with SF6/CF40.36 MPa SF6 + 0.34 MPa CF4 = 0.7 MPa abs.

When filling gas after possible leakage, refill with SF6 and N2 or CF4, respectively,in the proportions stated above. For example, leakage to blocking level 0.6 MPaabs. entails refilling with SF6/N2.

SF6 gas 0.36 • 0.1 ~ 0.051 Mpa SF6 at 20°C 0.7N2 gas 0. 34 • 0 .1~ 0 . 04 9 Mpa N2 at 20° C 0.7At gas filling observe the influence of temperature on pressure. Fig. 5/1, curve 4, forSF6 filling, and continued filling up to curve 1 for N2 or CF4 gases.

5.3 Function testBefore function testing, check with order-related circuit diagram. Check also theconnections. Thereafter, trial switching can be run from a sheltered place.

This trial switching shall take place only if:

- the circuit-breaker is disconnected from the high-voltage network and earthedaccording to regulations

- SF6 gas or mixed gas pressure is at rated pressure

- spring charging indicator on the spring operated mechanism is in position “b2” (fig.2/1) “charged”


5.3.1 Trial switching operation (fig. 5/2a,b)

Measure the function times. Fig. 5/2a shows the principle diagram for such ameasurement. Thereby, each breaker pole has its own measuring circuit. The timediagram in fig. 5/2b is solely intended as an explanation of the time expression used.

- CLOSING operation (C) (fig. 5/2b) Closing time “t1. ≤ 60 ms is the time fromswitching command issue to contact closing in the arcing chamber. This shall bemeasured on each breaker pole.

The time differences between the poles are:

For earthed capacitor stack

Pole A1 Pole B1 Pole C1+6.66 ms +2/-0.5 ms 3.33 ms ±1 ms 0(after pole C1) (after pole C1).

For unearthed capacitor stack

Pole A1 Pole B1 Pole C1+5 ms +2/-0.5 ms 0 ±1 ms 0after pole C1 after pole C1

or depending on the application.

- OPENING operation (O) (fig. 5/2b)Opening time “t2”≤ 35 ms is the time from switching command issue to contactopening in the arcing chamber. This shall be measured on each breaker pole.

The time differences between the poles are:

For earthed capacitor stack:

Pole A1 Pole B1 Pole C1+6.66 ms +2/-0.5 ms 3.33 ms ±1 ms 0(after pole C1) (after pole C1)

For unearthed capacitor stack:

Pole Al Pole B1 Pole C1+5 ms +2/-0.5 ms 0 ms ±1 ms 0after pole C1 after pole C1

or depending on application.

- CLOSE-OPEN switching (C-0) (fig. 5/2b)Close-Open time “t3” ≤ 40 ms is the time from contact closing to contactopening in the arcing chamber at a switching cycle CLOSE-OPEN.For measuring, short-circuit terminals “K1” and “K2” on the close-open switch“M3” (fig. 5/2a).

- Rapid reclosing (O-C-O)

Rapid reclosing can only be controlled together with the monitoring equipmentfor the plant.

5.3.2 Anti-pumping device (fig. 5/2a)

- CLOSE command is issued by connecting control voltage to terminal 2. Thevoltage prevails.

- OPEN command is issued by connecting control voltage to terminal 6.

The circuit-breaker is in position OPEN and despite the prevailing CLOSE commandremains in position OPEN.


5.3.3 Control of heater

- Measure the resistance or apply voltage and measure the current.

- When the thermostat controlled additional heater is installed, check the thermostatsetting.

5.4 Concluding work- Remove all test and measuring equipment.

- Connect the circuit-breaker to the high-voltage network.

- Check that the safety regulations are followed. Put the circuit-breaker into service.


5.5 Checklist for assembly and commissioning1 DATE :

2 PLATE OF INSTALLATION :

SERIAL NUMBER

3 NAME PLATE DETAILS :

Circuit breaker type : e.g. EDF SKS 1-1

Rated voltage : kV Normal Current A

Sr No : Gas Pressure SF6 / 20 deg.C. (abs): bar

Lightning Impulse withstand voltage : kV

Short circuit breaking current : kA

Short time withstand current 3s kA

Line charging breaking current : A

Closing & Opening supply voltage : VDC

Operating sequence : O - 0.3 s - CO - 3 min - CO

First pole to clear factor : 1.5

STORAGE YES NO1 a Complete material is available as per packing list ?

If NO mention the shortages :

b Instruction manual available ?

c G.A. and erection drawing available ?

d Schematic drawing available ?

2 a Operating drives box stored indoor ?

b Accessories box stored indoor ?

c Was the outdoor equipment stored above HFL (Highest flood level ) ?

d Any equipment damaged during re-transportation / unloading at site ?

ERECTION YES NO1 Is foundation and location of equipment as per G.A. drawing ?

2 STRUCTURE ERECTION

a Is length of the foundation bolts (projecting outside) sufficient to put checknuts ?

b Is there levelling nut available below structure ?

c Is the top side of the structure base plate as per G.A.. Drawing ?

d Is direction of the structure as per G.A. drawing ?

e Is the structure levelled in x , y and z axis as per G.A. drawing ?

X = Pole to pole distance (Measuring tape)

Y = Structure Height (Water tube level)

Z = Alignment of all the structures in one line (Line thread)

f Tightness of the nuts and checknuts done ?

g Are the foundation bolts filled with mortar ?

h Are the serial nos. of all the equipment matching with the serial numbersmentioned in the packing list ?

3 BREAKER POLES ERECTION : YES NOa Is there any chipping on the sheds of insulators ?

If YES what is the size of chipping ?Can erection work proceed further ?

DO NOT PROCEED FURTHER , IF CHIPPING IS UNACCEPTABLE

b Is 0.5 bar positive pressure verified in the breaker poles?Verification to be done by pressing the gas valve after opening the cover.

c Any damage observed on gas pipe while mounting the breaker poleson the structure ?

d Any washers left in between the breaker pole channels and the structure ?

DO NOT PROCEED FURTHER BEFORE REMOVING THE WASHERS

e Application of Torque on all the mounting bolts ?If YES , mention the values :1. Foundation bolts Nm2. Structure hardware Nm3. Pole mounting bolts Nm

4 FIXING OF OPERATING MECHANISM

a Is there any ingress of water found inside the mechanism?

If YES : DO NOT PROCEED FURTHER BEFORE OVERHAULING OF THE MECHANISM.

b Is following procedure adopted for fixing the mechanism?● Ensure that breaker poles are in fully OPEN position.● Lift the mechanism and fix the 04 mounting bolts with the pole beam.● Match the Eye-bolt of the mechanism connecting rod with the lever on pole.● Apply thin layer of grease on the pin before inserting in the eye bolt.● After insertion of pin, tighten the locking screw with locking washers.

6 GAS FILLING AND LEAKAGE TEST :Prerequisite for SF6 gas filling :● Thermometer● Temperature v/s pressure chart● SF6 gas cylinder● Gas filling kit● Suitable right / left adaptor (Gas cylinder)● Spanners● Cloth● Cleaning agent

a Presence of positive pressure checked in breaker poles.If NO , Fill the pressure in that particular pole upto 2.0 bar absolute and sniffall the pole including gas pipe with the leak detector and find the leakage.If no leakage is found , continue gas filling and if any leakage is found ,first ATTEND the leakage point before proceeding further.

b Is the gas monitoring system fixed as per G.A. drawing ?

c CALIBRATION OF DENSITY MONITOR / SWITCH.AMBIENT TEMPERATURE AT SITE DURING CALIBRATION OFDENSITY SWITCH & SF6 GAS FILLING IN POLES> DEG.C.IS THERMOMETER AVAILABLE?IS GAS FILLING KIT AVAILABLE?

BLOCKING DEBLOCKING

CONTACT / SETTING VALUES IN ABS.BAR


REFILL ALARMOP. BLOCK –IOP.BLOCK – IITIME AT WHICH CALIBRATION DONE : AM / PM

e SF6 GAS PRESSURE FILLED AFTER CALIBRATION OF DENSITY SWITCH● SF6 gas filled in the breaker : Bar● Temperature at which gas filled . degree C● Time at which gas filled AM / PM

f SF6 GAS LEAKAGE TEST : YES NO● Is Leak detector available?● If NO , do not proceed further till leak detector is arranged.● Is the complete SF6 gas system in the breaker (which includes pole, gas pipes & density switch / monitor ) free from any SF6 gas leakage ?● If NO , describe leakage found from which joints :

7 COMMISSIONING :a Connection of density switch cables :

● Density switch cableclosing circuit terminals : &__trip 1 circuit terminals : &__trip 2 circuit terminals : &__

b Control coil resistance :CLOSE COIL : WTRIP COIL - 1 WTRIP COIL - 2 W

c Requirement of DC control voltage in ideal condition : dcMeasured control voltage dcSWITCH “ ON “ AC / DC supply.

d Local operation of the breaker ( electrically) :Local closing operation OKLocal tripping operation for trip coil 1 OKAntipumping function OK* Open command provided directly on terminal number :

e Remote operations :Close command given on terminal number :Open command (T1) given on terminal number :Open command (T2) given on terminal number :

f SPARE CONTACTS OF AUXILIARY SWITCH :● Position of the breaker : TRIP● Serial number of contacts found NC :● Serial number of contacts found NO :● Position of the breaker : CLOSE● Serial number of contacts found NC :● Serial number of contacts found NO :

g BREAKER OPERATING TIMES

OPERATION LIMIT PHASE Measured value

CLOSING < 60 milliseconds A ms

B ms

C ms



OPENING ( T1 ) < 35 milliseconds A ms

B ms

C ms

OPENING ( T2 ) < 35 milliseconds A ms

B ms

C ms

CO ( through T1 ) < 40 milliseconds A ms

B ms

C ms

CO ( through T2 ) < 45 milliseconds A ms

B ms

C ms

h Are all the space Heaters in operating mechanism working? YES NO

I Tightness of all the electrical terminals verified?

j Is GAS leakage once again verified after timing and operation?

SF6 GAS PRESSURE AFTER COMPLETION OF JOB : BARTIME AT WHICH THE FINAL PRESSURE NOTED : AM / PM

k Operational counter readings as on DATE :

l Are insulators, operating mechanism, pole beam thoroughly cleaned and freefrom dust and dirt?* If NO , clean it thoroughly with dry cloth , before charging.

Check carried out by :

If points 1-7 as set out above have been completed, the circuit-breakercan be commissioned.


6 TroubleshootingBefore any activity is started, the circuit breaker has to be isolated from the high-voltage system and earthed according to regulations. The control and heatingcurrents are to be interrupted.

6.1 SF6 gas supply system- When the signal “Replenishment of SF6 gas” is given the gas pressure has to

be checked and insulating gas added. The correction can also be done whilethe breaker is in service. If the density monitor responds inspite of nominalpressure being present, the density monitor has to be checked.

- If leaks are suspected in the SF6 system, proceed as follows :

- SF6 gas lines :

Check all screwed and brazed joints with a leak detector. Replace faultybrazings and fittings. Tighten leaking screwed connections.

- Casing details (mechanism housing, flanges etc) :

In the case of minor leaks all sealing joints are to be checked with a leakdetector. In the case of major leaks, it is recommended that the leaks arelocated using soapy water.

- Crank Mechanism seals :

Leaking crankshaft seals must be replaced according to section 7.12.3.

- Check SF6 gas humidity (dew point).

6.2 Control CircuitsIf a switching command is delayed, or executed only partially or not at all, proceedas follows:

- Switch off control and auxiliary current circuit.

- Check the electrical terminals in the control circuits for tightness and properconnection.

- Compare wiring with wiring diagrams and correct if necessary.

- Check coils of solenoid valve 10006, 10007 and if necessary change defectivecoils. The cause of the overload has to be established and eliminated.

- Switch on and check control voltage.

- Switching or blocking occurs in the wrong pressure range.

- Check the function of the circuit breaker when the density monitor isdisconnected. When it is confirmed that the density monitor is defective, it hasto be replaced.


7. Inspection intervalsImportant checkpoints, acceptable tolerances, certain functional values foradjustments, and recommended inspection intervals can be found in the followinginspection chart.

In corrosive or polluted air and in climates with a high relative humidity, it can benecessary to halve the inspection intervals.

The specified inspection intervals should be considered as recommended guidevalues, which can be increased or decreased depending on local conditions.

7.1 Maintenance summary

Explanation:

1) Mech. oper. =Mechanical Close-Open operations.

2) El. oper.= Close-Open operations with electrical load

3) Special demands on resistance inspections for circuit-breakers operated > 100 Close and Open operations/year.

Type of measure Inspection interval Explan-ation

Condition of circuit-breaker

during work

Com-petence require-ments

A Ocular inspection 1-2 years a1 a2

B Preventive maintenanceIntermediate inspection• Operation testing including

time checks• Heat measurements

3-6 years, 2 000 mech. oper.

1) b1 b2

C Preventive maintenance• General inspection of the

circuit-breaker and operating mechanism.

After 15 years or 5 000 mech. oper.

1), 3) b1 b2

D Overhaul• Overhaul of the breaker

chamber• Line breaker• Transformer breaker• Capacitor battery breaker

Reactor breakerFilter breaker

• Non-synchronised• Synchronised• Complete overhaul.

ΣnxI2=8 000ΣnxI2=8 000

2 000 el. oper.4 000 el. oper.

after 30 years or 10 000 mech oper.

2) c1 c2


7


Condition of the circuit-breaker during work :a1) Circuit-breaker in operation.

b1) Closing spring untensioned, circuit-breaker open, disconnected and earthed.Circuit-breaker poles removed and transported indoors.

c1) Closing spring untensioned, circuit-breaker open, disconnected and earthed.Poles/breaking unit dismantled and transported to the workshop.

d1) Closing spring untensioned, circuit-breaker open, disconnected and earthed.Complete circuit-breaker including operating mechanism transported to theworkshop.

Competence requirements :a2) Substation personnel with no special training.

b2) Personnel authorised by ABB to carry out assembly, commissioning andmaintenance work.

c2) Personnel authorised by ABB to carry out assembly, commissioning andmaintenance work. In certain cases, with instructions from ABB.

7

See Maintenance of the operating mechanism


7


7

8

4



7.6 Table of parts to be servicedInspection / Maintenance

Part Part which see Activity after*)No. must be section number of

Inspected/ switchingreplaced operations

Breaker pole type EDF

10036 Lockwasher 7.11.1 replace10038/1 Sealing ring 7.11.1 replace10038/2 Sealing ring 7.11.1 replace10038/3 Sealing ring 7.11.1 replace10038/4 Sealing ring 7.11.1 replace10045 Alumina container 7.11.1 replace10047 Lockwasher 7.11.3 replace10056 Fixed contact pin 7.12.1 replace10059 Finger, complete 7.12.1 replace10060✪ Piston 7.11.3 inspect10061✪ Flow direction tube 7.11.3 inspect10064✪ Lockwasher 7.11.1 replace10065✪ Contract ring 7.12.2 replace10066✪ Insulating nozzle 7.12.2 replace10067✪ Auxiliary nozzle 7.12.2 replace10068✪ Erosion finger 7.12.2 replace10072 Compression spring 7.12.2 replace10073✪ Piston guide ring 7.12.2 replace10074 Multi-contact ring 7.12.2 replace10076 Cylinder 7.11.3 inspect10077 Cylinder guide ring 7.12.2 replace10082 Sealing ring 7.12.3 replace10090 Sealing ring 7.12.3 replace10091 Sealing washer 7.12.3 replace10182 Sealing ring 7.12.3 replace

Spring stored-energy actuator FSA-1(F)

10006 Coil “OPEN” inspect10166 Motor brushes inspect10167 Switching element inspect10168 Switching element inspect

*) Number of switching operations according to Fig. 7/1 of these instructions.

✪ Parts marked as ✪ can be replaced by piston assembly 1HYN400069R1,which is the part of moving contact (part no. 10013, fig. 7/4)

- Replace means :

As a general rule replace the part when the permissible number of switchingoperations according to fig7/1 of these instructions has been reached.

- Inspect means :

Inspect the part thoroughly for wear and replace if necessary. It is notnecessary to replace the part if at the endangered points it exhibits no or onlyslight wear and if silver plating is not damaged.


7.7 Tools, jigs, fixtures and accessoriesBesides tools for erection according to section 4.1.1 the following are required:

- Circlip pliers C8 (straight)

- Open end wrenches 10-43 mm

- Set of hexagon sockets 5-10 mm ((connection 3/8") and special tools, jigs andfixtures as per fig 7/2b.

7.8 Maintenance procedure7.8.1 General

Maintenance includes inspection and overhaul according to that described in sections7.1 to 7.5 of this Instruction. Maintenance work in general, and contact overhaul inparticular, shall be carried out in closed and as dust-free premises as possible.

In principle, all sealing units, spring washers and locking rings which are dismantledduring maintenance work shall be replaced by new such parts.

7.9 Preparation for overhaul7.9.1 Taking the circuit-breaker out of service

- Operate the circuit-breaker to position “b1” (uncharged and position OPEN) (fig. 2/1).- Open the disconnectors on both sides of the circuit-breaker.- Switch off control, signal, motor, and heating voltages.

- Earth the high-voltage cables on both sides of the circuit-breaker according tolocal regulations and disconnect them from the circuit-breaker.

- Disconnect control, signal, motor and heater circuits.- Reduce the SF6 gas pressure to pabs = 150 kPa (= 1.5 bar) before transport to

the assembly shop.

7.10 Removal of breaker poles7.10.1 Dismantling SF, gas lines

Loosen the fastening bolts of the gas system so that it can be moved lengthwise.Remove the cap nuts on the check valves so that the groove in its threads isvisible. Move the gas tube as far as possible to the side so that it comes against thecap nut. In this position, all three check valves are closed and the cap nuts can becompletely loosened while moving the tube system further to the side.

7.10.2 Removal of breaker poles (10171) and mechanism housing

Remove outer poles:

- Fasten lifting ropes under the upper flange of the breaker chamber insulator andtension them slightly. Remove screw, washer and nut, 49621, 49063, 89026 (fig. 4/1a:1,2).

- Move out the breaker poles to the side. Thereby, the coupling shaft 10005 (fig. 4/1:1,2) slides out of its coupling sleeve 10180. Transport the breaker poles to theassembly shop and place them on an assembly block (supplied by the customer).


Dismantling middle pole:

- Pull out the coupling shaft 10005.

- Dismantle connecting rod “f” (fig. 4/la:1,2).

- Fasten the lifting rope under the flange and tension it slightly. Remove screw,washer and nut, 49621, 49063, 89026.

- Lift the breaker pole upwards and transport it to the assembly shop.

7.11 Disassembly of breaker poles 10171 (fig. 7/2:1, :2, :3)- Clean the breaker poles on the outside.

- Empty SF6 gas through a connected dust filter.

- Observe meticulous cleanliness in all following work.

- Parts from the various poles must not be interchanged. This is important sinceparts in the arm and link systems are not identical.

7.11.1 Disassembly of breaker pole B1

The following description applies for pole B1, shown in fig. 7/2a:2. All poles aredisassembled in the same way.

- Place the breaker pole on the assembly table. Fastening points are the post andbreaker chamber insulator’s upper flanges and the adapter plate 10098.

Remove screws 49756/2 and the washers 89026/1 and lift the cover 10056/1.

Then lift out the desiccant container. Treat this according to prevailing localregulations.

Remove screw, nut and washers 49756, 49621/2, 89026/2, and carefully lift off theflange 10099/2 with the fixed contact.

- Place the flange on a sturdy base taking care of the O-ring groove.

- Support the mechanism housing, included in the link gear 10185/2, with a suitablewooden base. Unscrew and pull it out as far as possible.

- Hold firmly the socket of the operating insulator 10042/2 with wrench SW28, loosenthe locking nuts 49695/1, 49586, and turn the set screw 10041/2, until the operatinginsulator socket 10042/2 and the linkage joint 10043/2, are free. Take out themechanism housing completely. Remove O-rings 10038/3 and 10038/4.

- Disassemble the screw joint which holds together the support and breakerchamber insulator, with the intermediate connector flanges (49333, 49621, 89026/2) Lift off the breaker chamber insulator 10106

- Now lift off the moving contact and place it on a wooden base.

- Remove the pin 10050 and operating insulator socket 10042/2 from the operatinginsulator 10049.

- Thread off the set screw in 10051 with its locking nut 49505 from adjusting ring10053.

- Knock out the flow direction tube base with dismantling rod and adapter 00104 (fig.7/2b). Remove pin 10029.


- Unscrew the post insulator from the adapter plate 10098.

- Do not damage the sealing surfaces on the insulators and mechanism housing. Becareful also with the O-ring grooves in the flanges.

7.11.2 Disassembly of fixed contact 10030 (fig. 7/3)

- Remove screw 49756/2 with washer 89006/2 and separate the flange from thecontact holder.

- Loosen hexagon screws 10057 from contact finger cage 10058. Lift off the fingercage. Thereby, the fingers 10059 fall out.

- Unscrew the fixed contact pin 10056 with socket wrench 00103.

- As a general rule, change the fixed contact pin 10056, countersunk screws 10057,and all contact fingers 10059 .

7.11.3 Disassembly of moving contact 10013 (fig. 7/4)

- Remove screw 49332 and lift off the flange.

- Carefully take out the moving middle part.

- Clamp the piston 10060 in wooden jaws or prisms. Push flow direction tube base10054 out of flow direction tube 10061 and unscrew the piston base 10062 with thespecial torque wrench 00106 (fig. 7/2b).

- Remove the socket head screw 49318 and lock washer 10064. Take out thecontact ring 10065 with nozzle 10066 and disassemble them.

- Unscrew sleeve 10067.

- Unscrew erosion finger 10068 with torque wrench socket 00102.

- Remove the long screw 10069 from the cylinder base 10070, and pressure reliefflap 10071 with compression springs 10072.

- Check the piston 10060, flow direction tube 10061 and cylinder 10076, with regardto damage.

- Replace all piston guide rings 10073, cylinder guide ring 10077, multi-contact rings10074, compression springs 10072, insulating nozzle 10066, auxiliary nozzle10067, erosion finger 10068, contact ring 10065 and spring washers 10064.

7.11.4 Cleaning

- All parts shall be cleaned according to prevailing Maintenance and StorageInstructions 1HYB800001-30.

7.12 Overhaul of component groups7.12.1 Overhaul of fixed contact 10030 (fig. 7/3)

- Treat the contact surfaces of the fixed contact pins with polishing cloth and grease“N”, and the contact fingers with grease “N’ but no polishing cloth.

- Screw the fixed contact pin 10056 with hexagon wrench 00103 (fig. 7/2b) andsecure with locking fluid “B” (see 1HYB800001-29). Observe the tightening torque.

NOTEOnly the last two threads of the fixed contact holder 10097 are to be treated withlocking fluid. There must be no locking fluid on the contact surfaces, see fig. 7/3, 2*).


- When changing contact fingers, proceed as follows:

Slide the finger cage 10058 over the fixed contact holder 10097 up to 15 mmbefore the end position. Insert fingers 10059, including springs, and then push thefinger cage to the end position. Screw in the countersunk screws 10057 andsecure with locking fluid “B”. NOTE: Only on the last four threads. Observe thetightening torque.

- Screw the assembled contact 10030 to the connection flange and do not forget tolubricate the contact surface at 3*) (fig. 7/3) with grease “N”.

7.12.2 Overhaul of moving contact 10013 (fig. 7/4)

NOTE- Clamp the piston 10060 in wooden jaws or prisms.

- Treat the fixed contact surfaces on erosion finger and piston with polishing clothand grease “N”, 2*.

- Mount the erosion finger 10068 by special wrench 00102 (fig. 7/2b) and securewith locking fluid “B”. Observe the tightening torque.

Apply fluid “E” on the thread on sleeve 10067. Mount by hand and secure withlocking fluid “C”.

NoteOnly the last thread shall be treated with locking liquid (fig. 7/4, *).Remember to remove the inside catch piece of the special wrench 00102.

- Clean and grease the fixed contact surfaces between the contact ring 10065and piston 10060 with grease “N”. Mount the contact ring, including insulatingnozzle 10066, screw and washer, 49318, 10064, on the piston. Observe thetightening torque and locking.

- Mount the piston base 10062 with torque wrench 00106 (fig. 7/2b) and secure withlocking fluid “B “

NOTEApply locking agent to the last two threads only.

- Replace cylinder guide rind 10077 in the cylinder base 10070, piston guide rinds10073, and multi-contact rings 10074 in the piston 10060. Observe, when doing so,the direction of the multi-contact firings.

- Clean and grease the moving contact surface on cylinder 10076 and the piston inthe area of the multi-contact rings with grease “N”, see 2*) (fig. 7/4).

- Insert carefully the assembled middle part into cylinder 10076 and flow directiontube 10061, in cylinder base 10070. Note that there shall be an angle of 90° betweenthe flow direction tube window and the cylinder base window. Thereby, the middle partmust not be turned, but if so happens only in the direction of the arrow.

- Mount the long screws 10069, with pressure relief flap 10071 and compressionsprings 10072. Secure with locking fluid “B”. Observe the tightening torque.


7.12.3. Overhaul of link gear 10185/2 (fig. 4/1a:2, 7/5:2)

- Remove screw and washer 49705 and 89025, or 49701 and 89154, with shaftguard 10179 , and disassemble completely. Pull out the crankshaft 10083 andlever 10084/2 with linkage joint 10085/2. Unscrew socket head screw 10086with washers 10088 and 89004, and pull out the joint pin 10087.

Replace the following parts:

O-ring 10090.X-ring10081Sealing ring 10182

- Clean the metal parts that are not changed. Reassemble in reverse order. GreaseX-rings 10081 with grease “S”and sealing ring 10182, pack with grease “G” (MobileGrease 28). Be careful that the sealing rings are not damaged by the splines.Apply grease “G” on joint pin 10087.

Observe the tightening torque.

NOTE

For the relative positions of the punch marks, see “e” in fig. 7/5:2. Applygrease (fluor-silicone grease) “S” on the outer diameter “c” and assembly surface“a” on shaft guard 10179 10179.

7.13 Assembly of breaker pole (fig. 7/2a)Mounting the operating insulator 10049 on the moving contact:

- Place the snap ring 10055 in the groove on the flow direction tube base 10054.

- Push in the flow direction tube base 10054 and retaining ring 10055 so far into theflow direction tube 10061 that the pin 10029 can be inserted.

- Push in the ring 10053 over flow direction tube 10061.

- Slide the operating insulator 10049 with screen 10095 over the flow direction tube.Insert pin 10029 so that the bore in the bolt is in line with the centre-line ofthe operating insulator. Insert the flow direction tube base 10054 through thebore in pin 10029 until it reaches stop. Check that the rear blow-off hole is com-pletely open.

- Place the ring 10053 so that the set screw 10051 can be screwed into the bore inthe flow direction tube 10061. Insert set screw 10051, tighten lock nut 49505 andsecure with locking fluid “B”. Observe the tightening torque.

- Assemble the operating insulator socket 10042 and pin 10050 on the operatinginsulator. At this assembly the bore in the pin must be in line with the centre-lineof the operating insulator.

Assembly of the moving contact 10013 on the terminal flange 10108:

- Clean the contact surface on the terminal flange. Rub the fixed contact surface onthe cylinder base with a polishing cloth. Apply grease “N” on the rubbed surfaces.Mount with screw and washers, 49332, 10047 and 89006/1, and secure withlocking fluid “B”. Observe the tightening torque.

- Apply grease “N”, Fomblin, on the marked moving contact surface of contact ring10065 (fig. 7/4).


- Apply grease “S”, fluor-silicone grease on 0-rings 10038/1 and 10038/2 and thegrooves for the terminal flanges 10108. Place the O-rings in the grooves.

- Place the breaker chamber insulator on the flange and thereby try to locate themoving contact as far as possible in the middle of the insulator.

Place the post insulator over the operating insulator and screw both the insulatorsto the flange with screw, nut and washers, 49333, 49621 and 89026/3 (fig. 7/2a:2)

- Apply grease “S” on the O-rings and the groove for these in the adapter plate, andput the O-rings in the groove.

- Screw the adapter plate against the flange on the post insulator with screw andwasher, 49726/1 and 89026/1.

Determination of the adjusting measurement “A” between the operating insulatorsocket 10042 and linkage joint 10043 (fig. 7/2c:2):

- Place the depth gauge 00109 on the flange 10016 of the breaker chamberinsulator. Push the operating insulator 10049 upwards to stop. Place the straightedge 00114 on the lower insulator flange. Measure the “X” measurement.

- Calculation formula for the measurement “A”: A = X + 32.5 mm (~ 45.5)

- Set the measurement “A” on compass 00115.

- Remove the depth gauge 00109 and straight edge 00114.

The setting values of the two remaining poles are measured in the same manner butthe calculation formula for the measurement “A” is:

for pole marked A1: X - 29 mm (~ 51.5 mm)for pole marked C1: X - 14 mm (~ 66.5 mm)

At unearthed capacitor stack, the circuit-breaker consists of one pole marked A1(Fig.7/2a:1), and two poles, marked B1 and C1 (7/2a:3). B1 and C1 have the same settingvalue A.

For assembly of the complete fixed contact 10030, see fig. 7/2a:2.

- Apply grease “S” in the 0-ring groove on the upper terminal flange 10099/2 and thetwo O-rings, before placing them in the groove.

- Now mount the contact 10030 with flange on the upper flange of the breakerchamber insulator and try to place the contact as far as possible in the middle ofthe insulator. Use screw, washers and nut, 49756, 49621/2 and 89026/2.Observetightening torque 79 Nm.

- Install the desiccant container filled with desiccant (see fig. 7/2a:1,2,3).

- Finally, treat the O-rings and groove on the upper connection flange with grease“S” and mount the cover 10056/1 with screw and washer 49756/2 and 89026/2.(MD = 45 Nm).

Assembly of link gear 10185/2 (fig. 7/2a:2):

- Move the operating insulator 10049 to position OPEN.

- Apply “S” grease in the O-ring groove of the adapter plate and on the O-rings.Place the O-rings in their grooves.


- Place the link gear 10185/2 at a distance of 50 mm in front of the lower flange onthe post insulator.

- Place the adjusting screw 10041/2 (with only one tightening turn), with hexagonnuts 49586 and 49695 fully backed off on their threads, on the operating insulatorsocket 10042/2 and the linkage joint 10043/2.

- Tighten the adjusting screw 10041/2 to the measurement “A” by means of pre-setcompass 00115, according to fig. 7/2c:2, and secure on both sides with lockingfluid “B”. Observe the tightening torque.

- Apply grease “S” (fluor-silicone) on the sealing surfaces.

- Mount the link gear 10185/2 with hexagon nuts 49621/2 and 89026/2 and secureas above. Observe the tightening torque 79 Nm.

- Filling gas :

After the circuit-breaker has been dismantled for overhaul or repair it shall (beforetrial switching operation) be filled with SF6.

Evacuate down to the pressure 1 mbar and continue to pump at least one hourafter that pressure has been reached.

Stop evacuating and fill the circuit-breaker with dry and pure nitrogen gas to theatmospheric pressure. Let it stand two hours at this pressure.

Evacuate again to 1 mbar and fill with pure SF6 gas to 0.15 MPa abs. Observethereby the safety regulations for gas filling.

7.14 Erection of breaker poles (fig. 4/1a,b)- Set the middle breaker pole at max. OPEN position, and place the actuating lever

10154 in correct position according to punch marking “a” (fig.4/ib). Lower the poleon support frames 10161 and place the connecting rod joint head in the actuatinglever fork. The operating mechanism must be in position OPEN. Insert thehexagon screws 49063. Fit nut 49621 with washer 89026 and tighten slightly sothat the pole can be turned easily. Apply grease “G” ( Mobile Grease 28 ) on jointpin 10158. Mount the spring washer, spacer and hexagon screw, 10064, 89224 and49215. Place coupling shaft 10005 in the coupling sleeve and actuating lever.Apply grease “G” on the splines.

- Set the outer poles in OPEN position and push them from the outside withcoupling sleeves as far as possible over the coupling shafts. Insert the hexagonscrews 49063, fit the nuts 49621 and spacers 89026, and then tighten afteradjusting the breaker poles into correct position. The joint heads on the connectingrod must be moveable, and the coupling shafts must be moveable axially.

- Apply grease “G” (Mobile Grease 28, see 1*), (fig. 4/lc), on the flange surfaces ofthe gas nipples.

Clean the gas system by blowing SF6, gas via the. header block for approx. 3 min.Allow the gas to continue to flow while the system is connected to the checkvalves of the mechanism housing, according to fig. 4/1c. Screw on all capnuts up to the groove. Then tighten all cap nuts fully while moving the com-plete tube system to the side. Lock all fastening bolts. If the connections of thegas system to the header block have been dismantled, they shall be securedwith locking fluid “B” when re-installed. Observe the tightening torque 45 Nm.Fill with pure gas to normal working pressure 0.7 MPa abs. After conclusion ofgas treatment, fit the nut and , O-ring L10112/c.


7.15 Overhaul of spring operating mechanism 10173 (fig.7/6)

- Clean the transfer roller “A” shaft, worm wheel “G”, and worm screw “H”, and applygrease on the machined surfaces without dismantling.

- Clean and grease sparingly the transfer cam disc “B”, latches “C” and “D”, levers“E” and “F”. Use grease “G”.

- After 5000 switching cycles, the spring operating mechanism shall be overhauled.Contact ABB.

8. Spare parts8.1 General

8.1.1 Important notes- Replace all uncovered sealing rings of the insulating gas space.

- Unpacking : shortly before use.

8.1.2 Ordering of spare partsFor ordering, the following data are essential :

- Order no 1......... See order documentation- Type designation See nameplate- Serial number See nameplate- Publication number See end paper- Part number See spare parts list- Part designation See spare parts list

8.2 Spare parts8.2.1 Set of contacts for 1 breaking unit

Comp. No. Art No. Name of Item Fig. Number

10056 HATH408148R1 Fixed contact pin 7.3 110059 HATH401095R1 Finger Compl. 7/3 2710065 HATH306969P3 Contact Ring 7/4 110066 HATH307413P1 Insulating Nozzle 7/4 110067 HATH407749P1 Auxiliary Nozzle 7/4 110068 HATH307654R1 Erosion finger 7/4 110074 HAGS301276P24 Multi-contact Ring 7/4 110073 HATH408678P1 Piston guide Ring 7/4 210077 HATH408677P1 Cylinder guide Ring 7/4 110045 HAMT401304R1 Desiccant Cont. 7/2a 1

8.2.2 Gaskets, springs, fasteners for 1 breaker pole.


10038/2 1HML400410P170 O-ring 7/2a 510038/3 1HML400063P145 O-ring 7/2a 110038/1 1HML400410P610 O-ring 7/2a 610047 MT430575P14 Disc Spring 7/2a 1610057 STD430017P2205 Countersunk screw 7/3 210064 1HYN400575P1 Disc Spring 7/4 1210072 HATH407739P2 Compression Spring 7/4 3


8.2.3 Complete set of gaskets for gas supervision


L 00110/a 1HML400063P20 O-ring 4/1c 10

L 10112/c 1HML400063P28 O-ring 4/1c 3

L 10118 1HML400063P40 O-ring 4/1c 12

L 00110/b 1HML400063P16 O-ring 4/1c 6

L 10112/b SWT431154P1 Gasket 4/1c 1

8.2.4 Set of gaskets for 1 crank mechanism


10081 1HYN400061P1 X-ring 7/5 4

10090 AG434301P52 O-ring 7/5 4

10091 1HML400063P25 O-ring 7/5 1

10182 HAMT400593P6 Sealing ring 7/5 2

8.2.5 Spare parts for spring operated mechanism FSA -11


10166 -- Motor brushes motor 7/6 2

10168 HAGT444559P2 Limit switch 7/6 1

10168 HAGT444559P5 Limit switchT 7/6 1

10066 Close / Tripping as per table given below

10020 Motor as per table given below

8.2.7 Gas EquipmentGas filling equipment 1HYN300349R3Gas filling and evacuation equipment 1HYN300189R1Gas leak detector LS790A

8.2.6 Tools for EDF SK


8.2.8 Safety Disc Unit

Item No. Qty. Name of Item Article No.

1 1 Safety Disk Unit 1HYN400578P1

2 1 O-ring 1HML400063P75

3 1 O-ring 1HML400063P90

321



11. Appendix11.1 Figures

Fig. Designation

1/1 Nameplate1/2 Tabulated masses2/1 Circuit breaker3/1a:1,2,3 Breaker Pole (“OPEN” Position)3/1b:1,2,3 Breaker Pole (“CLOSED” position)3/2 Schematic control diagram4/1a:1,2 Circuit breaker, complete4/1b Connecting rod securement4/1c SF6 gas line4/1d Gas filling with SF6

4/2 Transport instructions5/1 SF6 filling pressure diagram5/2a Measurement layout for function tests5/2b Simultaneity monitoring7/1 Admissible switching cycles for contact overhaul7/2a:1,2,3 Breaker pole, complete7/2b Tools and overhaul tools7/2c:1,2,3 Length adjustment of moving contact7/3 Fixed contact7/4 Moving contact7/5:1,2,3 Link Gear7/6 Spring stored-energy actuator


Fig. 1/1


Type

Designation

EDFMass per citruit breaker (net)

kg (approx.) lb (approx.)

Operating mechanism incl. control 160 396

Breaker poles, pole supports 475 1045with actuator transmission

Total mass including 815 1793Supports

Supports 180 352

Mass per pole

kg lb

Breaker pole, complete 125 275

Fig. 1/2

Legend to Fig. 2/1

10112 Density monitor

10126 Density monitor cable, compl.

10170 Circuit breaker, type EDF

10171 Breaker pole

10172 Support frame

10173 Control cubicle with stored-energy spring operating mechanism and connecting rod

10174 Support

b Position indicator “CLOSED-OPEN”

b1 Breaker position “OPEN” and springs untensioned (not ready for switching)

b2 Breaker position “OPEN” and springs tensioned (ready for CO switching)

b3 Breaker position “CLOSED” and springs tensioned (ready for O-CO Switching)

C Earthing connection


Fig. 2/1

Legend to Fig. 3/1a,b:1

10013 Moving contact

10017 Cover

10030 Fixed contact

10041/1 Adjusting screw

10049 Operating insulator

10098 Adapter plate

10099 Upper terminal flange

10106 Insulator for breaking chamber

10108 Lower terminal flange

10171 Breaker pole

10185/1 Link gear

g-h Arcing contact

k-l Main current contact

O Circuit breaker in “OPEN” position

C Circuit breaker in “CLOSED” position


k-lg-h

Fig. 3/1b:1Fig. 3/1a:1

10099

10106

10030

10013

10108

10185/1

10171

Fig. 3/1 a,b:1

10017

10041/1

10098

10157

10165

10049

CO



10017 Cover

10030 Fixed contact



10098 Adapter plate




10171 Breaker pole

10185/2 Link gear

g-h Arcing contact





10171

10049

10098

10041/2

10108

10013

10030

10106

10099

10017

k-l

10185/2

10157

10165g-h

Fig. 3/1b:2Fig. 3/1a:2

O C

Fig. 3/1 a,b:2



10017 Cover

10030 Fixed contact



10098 Adapter plate




10171 Breaker pole

10185/3 Link gear

g-h Arcing contact





10098

Fig. 3/1b:3

10041/3

10049

10013

10108

10017

10099

10030

10106

k-l

10185/3

Fig. 3/1a:3

10157

10171

10165

g-h

Fig. 3/1 a,b:3

CO

Legend to Fig. 3/2

10006 Opening coil “OPEN”

10007 Closing coil “CLOSE”

10008 Auxiliary switch (S1)

10009 Auxiliary switch (K1 or K2)

10018 Motor limit switch (S3)

10019 Motor operated spring closing mech.

10020 Spring tensioning motor

10112 Density monitor (F2)

10171 Breaker pole

F3 Miniature circuit breaker

F12 Selector switch

S13 Control switch “CLOSE-OPEN”

1) Remote control


Fig. 3/2

S13

10171 1017110171

Legend to Fig. 4/1a:110005 Coupling Shaft10112 Density monitor10118 Header block10126 Density monitor cable compl.10154 Actuating Lever10161 Support frame10173 Operating mechanism10174 Support10176 Coupling ShaftL10177 SF6 gas pipeL10178 SF6 gas pipe10179 Shaft guard10180 Coupling Sleeve10182 Sealing ring10183 Cover49063 Hex screw M12x45 mm49069 Hex screw M16x50 mm49621 Hex nut M12x0.8D49622 Hex nut M16x0.8D49701 Socket head screw M10x20 mm49705 Socket head screw M10x40 mm89025 Washer89026 Washer89027 Washer89154 WasherD High-Voltage terminal:

Per screw fastener at least1 washer13/28x3 and1 Lock washer 13.5/28x1.6on each side of the fastener

E Coupling, coupling sleevesF Coupling shaft and guardf Connecting rod (component of sping

operated mechanism)g Fastenersh FastenersMD Torque

Nm ft. lbf

134579

190

103358

141


Fig

. 4/1

a:1

*) R

otat

ion

by 1

800

1011

8

C

1017

9

1017

6

4970

589

025

MD

=38

Nm

1018

010

182

4970

189

154

1018

3

FM

D=

190N

mE

1015

410

005

1011

2

1017

3

1017

41016

1

4906

949

622

8902

7

MD

=79

Nm

8902

649

621

4906

3

DM

D=

79N

m

A-A

1012

6

hL101

77/a

L101

77/b

L101

7810

1

f

gg

OP

E

A1

B1

C1

Fig

7/2a

:1Fi

g 7/

2a:2

Fig

7/2a

:3

Inst

alla

tion

of b

reak

er p

oles

with

gro

unde

d ca

paci

tor

bank

A1,

B1

and

C1

are

mar

king

s of

re

spec

tive

pole

mec

hani

sms

Legend to Fig. 4/1a:2

10005 Coupling Shaft

10112 Density monitor

10118 Header block

10126 Density monitor cable compl.

10154 Actuating Lever

10161 Support frame

10173 Operating mechanism

10174 Support

10176 Coupling Shaft

L10177 SF6 gas pipe

L10178 SF6 gas pipe

10179 Shaft guard

10180 Coupling Sleeve

10182 Sealing ring

10183 Cover

49063 Hex screw M12x45 mm

49069 Hex screw M16x50 mm

49621 Hex nut M12x0.8D


49701 Socket head screw M10x20 mm


89025 Washer

89026 Washer

89027 Washer

89154 Washer

D High-Voltage terminal:

Per screw fasterner at least

1 washer13/28x3 and

1 Lock washer 13.5/28x1.6

on each side of the fastener

E Coupling, coupling sleeves

F Coupling shaft and guard

f Connecting rod (component of sping

operated mechanism)

g Fasteners

h Fasteners

MD Torque

Nm ft. lbf

134579

190

103358

141


C

1017

9

1017

6

4970

589

025

MD

=38

Nm

1018

010

182

4970

189

154

1018

3

F

E

MD

=190

Nm

E

1015

410

005

1011

2

E

1017

3

1017

41016

1

4906

949

622

8902

7

MD

=79N

m89

026

4962

149

063

D MD

=79N

m

A-A

1012

6

hL101

77/a

L101

77/b

L101

781

f

gg

Fig

7/2a

:1

A1

Fig

7/2a

:3

B1

Fig

7/2a

:3

C1

A1,

B1

and

C1

are

mar

king

sre

spec

tive

pole

mec

hani

sms

Inst

alla

tion

of b

reak

er p

oles

with

ung

roun

ded

capa

cito

r ba

nk

1011

8

Fig

. 4/1

a:2

*) R

otat

ion

by 1

800

Legend to Fig. 4/1b

10064 Lockwasher

10083 Crankshaft

10154 Actuating lever compl.

10158 Joint pin

49215 Hex screw M 6 x 10 mm

89224 Washer

a Location of punch marks

c Installation location

d Rubber collar *)

e Clamp *)

f Connecting rod, compl. *)

g Punch mark unimportant for type EDF

h,k Locknuts

* Operating mechanism component

MD Torque


Nm ft. lbf

6 4

Fig. 4/1b

c=36

0

h

Legend to Fig. 4/1c

L 00110/a O-ring 15.3 x 2.4

L 00110/b O-ring 12.3x2.4

L 10177/a SF6 gas pipe

L 10177/b SF6 gas pipe

L 10178 SF6 gas pipe

L 10164 Non-return valve

L 00111 Washer

L 10118 Header block

L 10112/a Density monitor

L 10112/b Manometer *)

L 10112/c Hex. nut and sealing ring

*) At request of customer

1 *) To be greased with greases G,

Mobil Grease 28


Fig

. 4/

1c

Legend to Fig. 4/1d

1 SF6 Gas cylinder

2 Coupling

3 Regulator

4 Coupling

5 Gas Valve

7 Density Switch

8 Gas Valve

9 Pressure Gauge


Fig. 4/1d


Legend to Fig. 4/2

10186 Pole support with poles

a Supporting timber

Fig. 4/2


Legend to Fig. 5/1

1 Nominal filling pressure curve

2 Replenishment pressure curve (signal “Replenish SF6 gas”)

3 Blocking pressure curve (Signal “OPEN operation blocked”)

4 Filling of SF6 gas at mixed gas filling

Conversion of pressure units

100 kPa = 14.5 lbf/in2 = 1 bar

Conversion of :

Pabs (kPa) to Pe (gauge) lbf/in2

Pabs - 100 x 0.145 (kPa) = Pe (gauge) lbf/in2

Example : Rated filling pressure 1 at 200C (=680F) according to

table = 700 kPa (700-100) x 0.145 = 87 (gauge) lbf / in2

PabskPa

t0C

-30 -20 -5 0 10 20 30 40 50 60 70 80

1 500 580 625 640 670 700 730 760 790 820 850 880

2 490 520 555 570 590 620 650 670 700 730 750 770

3 470 500 540 550 580 600 630 650 680 700 720 750

4 290 300 330 340 350 360 370 380 400 420 430 440

Pabsbar

t0C

-30 -20 -5 0 10 20 30 40 50 60 70 80

1 5.0 5.8 6.2 6.4 6.7 7.0 7.3 7.6 7.9 8.2 8.5 8.8

2 4.9 5.2 5.6 5.7 5.9 6.2 6.5 6.7 7.0 7.3 7.5 7.7

3 4.7 5.0 5.4 5.5 5.8 6.0 6.3 6.5 6.8 7.0 7.2 7.5

4 2.9 3.0 3.3 3.4 3.5 3.6 3.7 3.8 4.0 4.2 4.3 4.4

Pabslbf/in2

t0C / F

-30/-22 -20/-4 -5/23 0/32 10/50 20/68 30/86 40/104 50/122 60/140 70/158 80/176

1 72.5 84.1 90.7 92.3 97.2 101.5 105.9 110.2 114.5 118.9 123.3 127.6

2 71.1 75.4 80.5 82.7 85.6 89.9 94.3 97.2 101.5 105.9 108.8 111.2

3 68.2 72.5 78.4 79.3 84.1 87.0 91.4 94.3 98.6 101.5 104.4 108.8

4 42.1 43.5 47.9 49.3 50.8 52.2 53.7 55.1 58.0 60.9 62.4 63.8

Fig. 5/1

0

100

200

300

400

500

600

700

800

900

1000

-30 -20 -5 0 10 20 30 40 50 60 70 80

9 130.5

➤ ➤ ➤

bar ibf/in2 kPa

Pabs Pabs

1

2

3

4

8 116

7 101.5

6 87

5 72.5

4 58

3 43.5

2 29.0

Legend to Fig. 5/2a,b

Fig. 5/2a Measurement layout for function tests

10171 Breaker pole

Y2, Y3 Coils OPEN

Y1 Coil CLOSE

Q Auxiliary switch

1 Terminal 1 in control cubicle






A,B,C Pole coluomn

M1 Time recorder

M2 Main switch of test gear

M3 Control switch of test gear

K1 Terminal 1 on M3

K2 Terminal 2 on M3

UM Measurement voltage

US Control Voltage

C CLOSED

O OPEN

Fig. 5/2b Time diagram of CLOSE-OPEN operation

A,B,C Pole column

I Coil current

t1 Closing time

Dt1 Closing tolerance of the pole column

t2 Opening time

Dt2 Opening tolerance of the pole column

t3 Close-open time


Fig. 5/2a,b

Fig. 5/2b

Legend to Fig. 7/1

I Breaking current

n Number of switching operations


Fig. 7/1

Legend to Fig. 7/2a:110056/1 Cover10013 Moving contact10099/2 Upper terminal flange10029 Pin10030 Fixed contact, compl.10038/1 O-ring10038/2 O-ring10038/3 O-ring10038/4 O-ring10041/1 Adjusting screw10042/1 Operating socket insulator10043/1 Linkage joint10045 Desiccant container10047 Lock washer10049 Operating insulator10050 Pin10051 Set screw10053 Adjusting ring10054 Flow direction tube base10055 Retaining ring10061 Flow direction tube10095 Screen10106 Insulator for breaking chamber10108 Lower terminal flange10171 Breaking pole10172 Support frames10098 Adapter plate10185/1 Link gear49017 Socket screw M 6 x 20 mm49332 Socket screw M 10 x 50 mm49333 Hex screw M 12 x 70 mm49505 Hex nut M 8x0.5D49586 Hex nut M 16x0.5D49621/2 Hex nut M 12 x 0.8 D49695/1 Hex nut M 16 x 0.8 D89006/1 Washer M 12 x 40 mm49726/2 Hex screw M 12 x 50 mm49756/2 Hex head bolt M 10 x 30 mm89026/2 Washer49756 Hex Head bolt M 12x6049333 Hex Head bolt M 12x7049726/1 Hex Head bolt M 12x4589006/2 Washer 10.5x20x2MD Torque


Nm ft. lbf6

204579

4153358

Fig. 7/2a:1

49621/289026/2

10038/2

10038/410038/3

49726/189026/2

10038/1

10185/1

10043/1

49695/110041/1

49726/289026/2

4958610098

10042/1

10050

10095

10049

10108

49505

10029

1005110053

1005510061

10013

89006/11004749332

MD =40Nm

4933389026/249621

MD =79Nm

10038/210038/1

10054

10030

10106

49621/2

4975689026/2

10038/2

49756/289006/2

10056/1

10038/1

10016

10099/2

10045

10171

10172


Nm ft. lbf6

204579

4153358


10038/210038/1

4975689026/2

49621/2

49756/289006/2

10056/1

10099/2

10016

10030

10106

10013

1006110055

10054

10108100531005149505

10038/110038/2

4933389026/249621

MD =79Nm 1002910095

10049

89006/11004749332

MD=40Nm

10042/2

10050

49695/110041/249586 49726/1

89026/2

10043/2

10098

10038/110038/2

10038/310038/4

49621/289026/2

49726/289026/2

10185/2

10045

Fig. 7/2a:2

10171

10172


Nm ft. lbf6

204579

4153358


Fig. 7/2a:3

49726/189026/2

10038/310038/4

49621/289026/2

10038/210038/1

10041/3

10043/3

10185/3

1009849586

49726/289026/2

10042/3

10050

49695/1

10049

1002910095

49505

1005310051

10108

1006110055

89006/11004749332

MD=40Nm

4933389026/249621

MD=79Nm

10038/110038/2

10054

49621/2

10013

10106

10030

4975689026/2

10045

10016

10099/2

10038/110038/2

10056/1

49756/289006/2

10171

10172

Legend to Fig. 7/2b

00100 Guide pin

00102 Special Wrench

00103 Socket Wrench

00104 Disassembly Rod with adapter

00105 Set of Wrenches

00106 Special torque Wrench

00107 Measuring kit

00109 Depth Gauge

00114 Straight edge

00115 Compass

00117 Torque wrench


Fig. 7/2b

Legend to Fig. 7/2c:1

00109 Depth gauge

00114 Straight edge

10016 Upper flange

10049 Actuating rod

10185/1 Link gear



89026/2 Washer

89026/3 Washer

A Setting dimension x-29 mm=A (~51.5) for compass 00115 (Fig. 7/2b)

d Upper Limit stop

x Actual dimension from actuating rod to outer edge of straightedge


mm in50 1.97

Fig. 7/2c:1

1004

910

016

X

1004

3/1

4975

689

026/

2/3

4962

1

001

1004

2/1

A

d

0010

9

1018

5/1


00109 Depth gauge

00114 Straight edge

10016 Upper flange

10049 Actuating rod

10185/2 Link gear



89026/2 Washer

89026/3 Washer

A Setting dimension x+32.5 mm=A (~45.5) for compass 00115 (Fig. 7/2b)

d Upper Limit stop



mm in50 1.97

Fig. 7/2c:2

1004

910

016

X

1004

3/2

4975

689

026/

2/3

4962

1

0

1004

2/2

A

d

0010

9

1018

5/2


00109 Depth gauge

00114 Straight edge

10016 Upper flange

10049 Actuating rod

10185/3 Link gear



89026/2 Washer

89026/3 Washer

A Setting dimension x-14 mm=A (~66.5) for compass 00115 (Fig. 7/2b)

d Upper Limit stop



mm in50 1.97

Fig. 7/2c:3

1004

910

016

X

1004

3/3

4975

689

026/

2/3

4962

1

1004

2/3

A

d

0010

9

1018

5/3

Legend to Fig. 7/3

10099/2 Upper terminal flange

49756/2 Hex head bolt

89006/2 Washer

10030 Fixed contact

10056 Fixed contact pin

10057 Countersunk screw M 6 x 16 mm

10058 Finger cage

10059 Finger complete

10097 Fixed contact support

10188 Finger spacing

MD Torque

*) Thread turns (2 turns) to be treated with locking agent

2*) Contact sufrace which must remian free of locking agent

3*) Contact surfaces, greased with grease “N”

Nm ft. lbf

62649

41936


Fig. 7/3

10099/2

10097

10059

Legend to Fig. 7/4


49332 Socket screw, M10x40

10047 Disk spring

89006/1 Washer


10060 Piston

10061 Flow direction tube

10062 Piston base

10064 Lock washer

10065 Contact ring

10066 Insulating nozzle

10067 Auxiliary nozzle

10068 Erosion finger

10069 Long screw

10070 Cylinder base

10071 Pressure relief flap

10072 Compression spring

10073 Piston guide ring

10074 Multi-contact ring

10076 Cylinder

10077 Cylinder guide ring


MD Torque

* Inside thread (2 turns) to be treated with locking agent

2 *) Contact surface which must remain free of locking agent

3 *) Contact surface, greased with grease “N”

A Note ! Observe carefully that the direction of rotation given in the figure is kept. If it is notfollowed, the lamella of the multi-contact will be destroyed.

Nm ft. lbf

61179

48

58


Fig. 7/4

Legend to Fig. 7/5:1

00112 Non-return valve

10080 Ball bearing

10081 X-ring

10083 Crankshaft

10084/1 Lever

10085/1 Linkage joint

10086 Socket head screw

10087 Joint pin

10088 Washer

10090 Sealing ring

10091 Sealing ring

10092 Gas connection

10182 Sealing ring

10183 Cover

10185 Link gear



89004 Washer

89025 Washer

89154 Washer

MD Torque

a....e See section 7.7.3

Nm ft. lbf6

45110

43381


Fig. 7/5:1

8915

449

701

d10

091

1009

200

112

1008

31008

0

C

1018

2

1018

3

1009

010

081

b

1018

549

705

8902

5M

D=4

5Nm

e



10080 Ball bearing

10081 X-ring

10083 Crankshaft

10084/2 Lever



10087 Joint pin

10088 Washer

10090 Sealing ring

10091 Sealing ring


10182 Sealing ring

10183 Cover

10185 Link gear



89004 Washer

89025 Washer

89154 Washer

MD Torque


Nm ft. lbf6

45110

43381


Fig. 7/5:2

e10

185

4970

589

025

MD

=45N

m

0011

2

1009

2

1009

1

d

8915

449

701

1008

3

1018

2

1018

3

1008

0

1009

010

081

b

a

C



10080 Ball bearing

10081 X-ring

10083 Crankshaft

10084/3 Lever



10087 Joint pin

10088 Washer

10090 Sealing ring

10091 Sealing ring


10182 Sealing ring

10183 Cover

10185 Link gear



89004 Washer

89025 Washer

89154 Washer

MD Torque


Nm ft. lbf

645

110

43381


Fig. 7/5:3

e

b

1018

549

705

8902

5M

D=4

5Nm

1009

010

081

1018

2

C

1008

0

1018

3

8915

449

701

d

1009

2

1009

1

0011

2

1008

3

Legend to Fig. 7/6

10006 Coil “CLOSE”, “OPEN” (Y1,2,3)

10020 Spring tensioning motor

10144 Hand crank

10166 Motor brushes

10167 Switching element (S1)

10168 Switching element (S3)

A Transmission roller

B Transmission cam

C Locking pawl

D Locking pawl

E Level

F Lever

G Worm wheel

H Worm

Possible breaker positions according to Fig. 2/1a...c

a Lubricating points of spring retaining pin


Fig. 7/6

1014

4

Operating mechanism type FSA 1

Instructions for Operationand Maintenance

Contents :

1. General

2. Construction

3. Function

4. Erection

5. Commissioning

6. Maintenance

7. Spare Parts

8. Appendix

1HYB800001-38 Rev. A

Contents Page

1. GENERAL 11.1 Validity 11.2 Specification 11.3 Masses 1

2. CONSTRUCTION 12.1 Operating mechanism cubicle 12.2 Drive mechanics 12.3 Driving units 22.4 Electrical components 3

3. FUNCTION 33.1 Functions of the basic mechanism 33.2 Charging the closing spring 33.3 Closing - operation 43.4 Opening - operation 5

4. ERECTION 54.1 Delivery 54.2 Installation 5

5. COMMISSIONING 55.1 Function tests 55.1.1 Manual operation 55.1.2 Motor operation 5

6 MAINTENANCE (Overhaul) 66.1 Duty-related overhaul 6

7 SPARE PARTS 77.1 Storage instructions 77.2 Spare parts list 7

8 APPENDIX 88.1 Figures 8


1. General1.1 Validity

This operating instruction applies for stored-energy spring operating mechanisms toSF6 circuit-breakers of type EDF- Operating mechanism type FSA 1 (outdoor)

1.2 Specifications

Specifications are contained in the order documentation and on the rating plate.

1.3 Masses

The masses (kg/lb) can be obtained from the order documentation and the shippingdocuments. For internal transport and assembly see the instructions for erection andoperation of the circuit breaker, Fig. 1/2

2. ConstructionThe stored-energy spring operating mechanism comprises the following main parts :

- Operating mechanism cubicle compl.

- Basic mechanism

- Driving unit

- Electrical components

2.1 Operating mechanism cubicle (Fig. 2/1)

In the operating mechanism FSA 1 (outdoor), the electrical components and thebasic mechanism are placed in the operating mechanism cubicle EV 11851.

There is a door with an inspection window for reading the position indicatorEV11825 and the spring charge indicator EV11824 on the operating mechanismfront. The door can be locked with a padlock. When the door is opened, theelectrical panel with its electrical components becomes accessible and the handcrank can be inserted.

The operating mechanism cubicle is designed so that the basic mechanism and theelectrical components are hermetically protected against the effects of the weather.

The outdoor circuit breaker type EDF has the cubicle mounted below the polebeams of the breaker. The connecting rod projects upwards.


2.2 Drive mechanics (Fig. 2/1, 7/1)

The basic mechanism EV 11852 is assembled in a chassis EV 11855 in which theshaft bearings, the spring suspension points and the switchgear panel are fastened.

Their major parts are :- Main shaft EV 11815- Output shaft EV 11816- Motor EV 11843 with reducer gear EV 11842- Worm gear EV 11819- Closing spring EV 11813- Opening spring EV 11814- Opening unit EV 11810- Closing unit EV 11811- Auxiliary switch EV 11838- Hydraulic shock absorber EV 11840

2.3 Driving units (Fig. 2/1, 7/1)

Stored-energy spring operating mechanism type FSA 1 (outdoor)

- Lever EV 11848 is located on the output shaft and when it rotates, it transmitsthe rotary movement to the connecting rod.

- Connecting rod compl EV 11822 (FSA 1) constitutes the connection betweenthe operating mechanism and the circuit breaker. Bellows EV 11781 seals theoperating mechanism cubicle at the connecting rod.

2.4 Electrical components

In the operating mechanism, the auxiliary switches EV 11838, microswitches EV11826 (motor limit switches), counters EV 11860 and CLOSE and OPEN magnetcoils are integrated in the basic mechanism.

In the mechanism type FSA 1, the electrical control and monitoring elementsnecessary for the control of the circuit breaker are additionally arranged on theswitchgear panel.

These are essentially :- LOCAL-REMOTE selector switch- ON-OFF-switch- Motor protection switch- Auxiliary contacts- Miniature circuit breakers

The operating mechanism is equipped with a permanently turned-on heating resistorto avoid the condensation inside the operating mechanism.

If the operating mechanism is to be stored outdoors for periods longer than fourweeks, the heater should be connected.


3. Function3.1 Function of the basic mechanism (Fig. 7/1)

- The main shaft EV 11815 serves as the drive shaft for charging the closing spring.

- By means of lever EV 11848, the output shaft EV 11816 transmits the closingor opening movement to the connecting rod, and hence to the circuit breaker.

- The motor EV 11843 with reducer gear EV 11842 charges the operatingmechanism mechanically (tensions the closing spring). The motor limit switch,EV 11826, opens when the closing spring is tensioned.

- Hand crank EV 11812 (FSA 1) is used to charge the closing springs by hand(e.g. on power failure).

- On discharging, closing spring EV 11813 release uses the energy to chargethe opening spring via the output shaft, at the same time closing the breaker.

- On discharging, opening spring EV 11814 release uses the energy to open thebreaker.

- Closing unit EV 11811 holds the closing spring in the charged condition or itreleases it on command electrically via the CLOSE magnet coil ormechanically (by hand).

- Opening unit EV 11810 holds the opening spring in the charged condition orreleases it on command electrically via the OPEN magnet coil or mechanically(by hand).

- Hydraulic shock absorber EV 11840 is double acting. It assures a dampenedopening and closing operation.

- Auxiliary switch EV 11838 is controlled by the position of the circuit breaker.CLOSE and OPEN magnet coils are controlled by its contacts, i.e. thecommands for charging or discharging of the springs are tripped. They alsoprevent the CLOSE magnet coils from being excited when the circuit breakeris closed or the closing spring is not fully charged, or they prevent the OPENmagnet coils from being energized when the circuit breaker is opened.

- Heater EV 11854 (Fig.2/1) is provided in operating mechanism. The heatingresistor prevents condensation in the operating mechanism cubicle. Theheating resistor remains permanently turned on.

3.2 Charging the closing spring (Fig. 7/1)

In Fig. 7/1 the basic mechanism is shown with the circuit breaker in the positionOPEN (“O”) and with the springs in the discharged condition.

The closing spring EV 11813 is charged electrically by motor EV 11843 withflanged-on reducing gear EV 11842, leading via coupling shaft EV 11841 to wormgear EV 11819. The hand crank coupling EV 11817 prevents the hand crank fromturning during the electrical charging of the spring. The motor EV 11843 is alsodecoupled (by coupling shaft EV 11841) when the spring is charged by hand.


As an emergency charging feature the closing spring EV 11813 is charged with handcrank EV 11812 via bevel gear EV 11818 and worm gear EV 11819 by turning themain shaft EV 11815. The main shaft EV 11815 is turned via worm wheel and pullhook EV 11830 which engages the coupling ring EV 11829.

For charging the closing spring approx. 30 rotations of the hand crank are necessary.On a 1800 rotation the crank EV 11828 runs through top dead center.

The pawl on the control disk EV 11820 is held by lever EV 11832, and the blockinghook EV 11834 of the closing unit.

The switching cam of crank EV 11828 simultaneously reaches the motor limit switchEV 11826 and cam follower lever EV 11827 is lifted.

The following functions are thereby initiated :

- Turning off the power supply to the motor by the motor limit switch.

- Preparation of the closing operation by the motor limit switch.

- Spring charge indicator indicates “Spring charged”.

Time necessary for charging the spring at nominal tension : < 15 seconds.

3.3 Closing-operation (the circuit breaker is closed)

When the engagement lever EV 11837 or the closing coil EV 11839 are actuated byhand or electrically, the lever 11832 and the blocking hook EV 11834 of the closingunit release the control disk pawl EV 11820.

By releasing the closing spring EV 11813, the main shaft EV 11815 rotates in thedirection shown on fig. 7/1 and in turn the control disk EV 11820 transmits therotational movement to the cam follower EV 11836 and operating lever EV 11835.The output shaft EV 11816 is thereby rotated and the circuit breaker is closed viaoperating lever EV 11848 and connecting rod compl. EV 11780/EV 11822.Simultaneously, opening spring EV 11814 is charged.

When the output shaft has rotated by 60o, the control disk pawl passes over the camfollower EV 11836 and then the output shaft is released and can rotate in theopposite direction.

However, this is not possible as long as holding cam EV 11847 is held by lever EV11832 and blocking hook EV 11834 of the opening unit. The closing spring EV11813 is automatically recharged again.

At power failure the closing spring can be recharged by hand with hand crank EV11812 (FSA 1).

In this position the following indications are visible :

- Position indicator : “I” (circuit breaker in closed position)

- Spring charge indicator : “Spring charged”


The operating mechanism is ready for another rapid closing operation but theinterlock hook EV 11833 prevents the execution of a closing operation, while thecircuit breaker is closed. Both springs (EV 11813 and EV 11814) remain chargedand both shafts are blocked by the two blocking units (EV 111810 and EV 11811).

3.4 Opening-operation (the circuit breaker is open)

The holding cam EV 11847 is released from lever EV 11832 and the opening unitblocking hook EV 11834, when disengagement lever EV 11845 and opening coil EV11846 and/or EV 11839 are actuated manually or electrically.

By discharging the opening spring EV 11814, the output shaft EV 11816 rotates 600,thereby opening the circuit breaker via the connecting rod.

The interlock hook EV 11833 of the closing block is released at the end of theopening operation and a new closing operation can be executed.

4. Erection4.1 Delivery

Each circuit breaker is delivered with its corresponding operating mechanism whichis packed separately or already mounted on the circuit breaker pole beams. Atdelivery, both springs are uncharged and the circuit breaker is in open position.

4.2 Installation (Fig. 2/1)If the operating mechanism is delivered separately, the following must be noted :

Mount the operating mechanism or operating mechanisms (which 1-pole operatingmechanism type) on the circuit-breaker pole beams. Make sure that the number of thecircuit breaker corresponds with the number on the operating mechanism rating plate.

The operating mechanism must be mounted on the circuit breaker according to theinstruction for erection and operation of the circuit breaker.

Connect electrical connections according to valid circuit diagram.

Never operate the operating mechanism if it is not connected to the circuit breaker (filledwith SF6-gas to 0.7 MPa) and the electrical connecting lines are not connected.

5. Commissioning5.1 Function tests

Function tests are performed after the commissioning work and immediately beforethe circuit breaker is taken into service, as well as after overhaul work.

Function tests may only be performed with the circuit breaker disconnected from thehigh-voltage system and filled with SF6-gas to 0.7 MPa (abs).

5.1.1 Manual operation

For this purpose hand crank EV 11812 is used for charging the closing spring. Whenthe closing spring has reached the desired tension, it automatically uncouples thepull hook (EV 11830) of the main shaft, thereby releasing the hand crank.

During these trial switching operations, the position indicators (EV 11824 and EV11825) and the counter must be tested for proper functioning.


5.1.2 Motor operation

The motor should be turned on only after the hand crank has been removed, eventhough it is uncoupled automatically when the motor is started.

The charging of the closing springs starts as soon as the motor supply is switchedon. The supply of power to the motor is turned off automatically (by microswitch EV11826) when the closing spring is adequately charged.

- Proper functioning of the operation mechanism should be tested by severalCLOSE and OPEN switching operations.

- Also a test for correct functioning of the selector switch LOCAL-REMOTEshould be performed.

- Motor running time for charging springs at rated voltage : < 15 seconds.

6. Maintenance6.1 Duty-related overhaul (Fig. 7/1)

After 2000 CO Switching operations, the following parts must be cleaned andlubricated without being disassembled :- Cam follower EV 11836 with roller shaft, greased with grease G, (Mobile

Grease 28*)- Worm gearing EV 11819 (worm and worm wheel), grease G (Mobile Grease 28)- Rollers of levers EV 11832 of closing and opening units, grease L (Aseol

Sylitea 4-018)Clean and lubricate the machined surfaces of the following cams :- Control disk with pawl EV 11820, grease L (Aseol Sylitea 4-108)- Holding cam EV 11847, grease L (Aseol sylitea 4-108)Treat the worm surfaces of the following pins or cranks with :- Crank pin EV 11853, grease L (Aseol sylitea 4-108)- Spring fixation pin EV 11856, grease L(Aseol sylitea 4-108)- Spring fixation pin EV 11857, grease L(Aseol sylitea 4-108)- Crank with switching cams EV 11828, grease L(Aseol sylitea 4-108)Change the following details of the connection rod if required (Fig. 2/2):- Rod end joint EV 11858 or EV 11782 (in case of obvious wear)- Bellows EV11781 when there are cracks in material, leaks.

Treat rod end joint with grease G (Mobile Grease 28)

Disassembly and assembly as described in the instructions for erection andoperation of the circuit breaker.

No work is allowed to be carried out until the closing and opening springs aredischarged, and the circuit breaker is in the OPEN “O” position. The power to themotor must be disconnected.

After 5000 CO switching operations, a general overhaul must be performed byspecialized staff. Please contact the manufacturer or his representative.

*As an alternative to Mobile Grease 28, Molykote Long term 2 plus or Aseol Sylitea4-108 may be used.


7. Spare partsFor ordering, the following data are essential :

- Order number See order documentation- Type designation See rating plate- Serial number See rating plate- Publication number See spare parts list- Part number See spare parts list- Design Outdoor- Part designation See spare parts list

7.1 Storage instructionBefore the erection, the operating mechanisms shall be stored indoors or under aroof as long as possible. If the units are stored outdoors, they must be preventedfrom standing in water pools. With outdoor storage for long periods, the units shall becovered with tarpaulin and the heating elements of the operating mechanism shall beconnected.

7.2 Spare parts listOverhaul parts :

Part No. Part designation Number/Type of operating mechanism Figure

FSA 1 (1) FSA 1 (F)

EV 11781 Bellows - 1 2/1,2/2a,bEV 11782 Rod end joint - - 2/1,2/2bEV 11858 Rod end joint 1 1 2/1,2/2aEV 11859 Motor brush 2 2 7/1

Reserve parts :

Part Number Part designation Number/type of operating mechanism Figure/section

FSA 1 (1) FSA 1 (F)

EV 11810 Opening unit 1 1 7/1 (legend)/3.1EV 11811 Closing unit 1 1 7/1 (legend)/3.1EV 11813 Closing spring 1 1 7/1EV 11814 Opening spring 1 1 7/1EV 11823 Pin 1 1 7/1EV 11826 Motor limit switch 2 2 7/1EV 11836 Cam follower 1 1 7/1EV 11838 Auxiliary switch 1 1 7/1EV 11839 Coil “CLOSE”, “OPEN 1” 1 1 7/1EV 11840 Hydraulic shock absorber 1 1 7/1EV 11842 Reducer gear 1 1 7/1EV 11843 Motor 1 1 7/1EV 11844 Switching element (yellow) 2 2 7/1EV 11846 Coil “OPEN 2” 1 1 7/1EV 11854 Heater 1 1 2/1


8 Appendix8.1 Figures

Fig. Title

2/1 Stored-energy spring operating mechanism compl. FSA 1

2/2a Connecting rod compl. FSA (outdoor)

7/1 Drive mechanics (schematic representation)


Legend to Fig. 2/1EV 11781 Bellows

EV 11812 Hand crank (FSA 1)

EV 11822 Connecting rod compl. (FSA 1)

EV 11824 Spring charge indicator

EV 11825 Breaker position indicator

EV 11849 Rotational movement lever

EV 11851 Drive assembly cubicle compl.

EV 11854 Heater

EV 11855 Chassis

EV 11858 Rod end joint (FSA 1)

b Breaker position indicators

b1 Breaker position OPEN “O”, springs

“discharged” (not ready for switching)

b2 Breaker position OPEN “O”, springs

“charged” (ready for CO Switching operation)

b3 Breaker position CLOSED “I”, springs

“charged” (ready for O-CO switching operation)


Fig. 2/1

1181

2

Legend to fig. 2/2a

EV11781 Bellow

EV11822 Connection rod compl. (FSA 1)

EV11858 Rod end joint (FSA 1)

84638 Hex nut M20 x 1.5 mm/0.5d

MD Torque


Fig. 2/2a

Legend to fig. 7/1EV11812 Hand crank (FSA 1)EV11813 Closing springEV11814 Opening springEV11815 Main shaftEV11816 Output shaftEV11817 Handcrank couplingEV11818 Bevel gearingEV11819 Worm gearingEV11820 Control disk with pawlEV11822 Connecting rod compl. (FSA 1)EV11823 PinEV11824 Spring charge indicatorEV11825 Position indicatorEV11826 Microswitch (motor limit switch)EV11827 Cam follower leverEV11828 Crank with switching camsEV11829 Coupling ringEV11830 Pull hookEV11831 Adjusting screwEV11832 Lever (closing/opening block)*),2*)EV11833 Interlock hook*)EV11834 Blocking hook*),2*)EV11835 cam follower leverEV11836 Cam followerEV11837 Engagement lever (closing lever)*)EV11838 Auxiliary switchEV11839 Coil “CLOSE”, “OPEN 1”*),2*)EV11840 Hydraulic shock absorberEV11841 Coupling shaftEV11842 Reducer gearEV11843 MotorEV11844 Switching element (yellow)EV11845 Disengagement lever (opening lever)2*)EV11846 Coil “OPEN 2”, 2*)EV11847 Holding camEV11848 Rotational movement lever (FSA 1, outdoor)EV11850 Auxiliary switch leverEV11852 Drive mechanismEV11853 Crank pinEV11856 Spring fixation pinEV11857 Spring fixation pinEV11859 Motor brushEV11860 Switching operation counting meter

*) Part of closing block EV118112*) Part of opening block EV11810


Fig. 7/1

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