ca vd4 01-4abozza - abb group...interrupting principle of abb interrupters in a vacuum interrupter,...

PRELIMINARY

VD4Medium voltage vacuum circuit-breakers

12 ... 24 kV - 630 ... 2500 A - 16 ... 31.5 kA

1

3

11

29

33

1

2

3

4

43

5

DESCRIPTION

CIRCUIT-BREAKER SELECTION AND ORDERING

SPECIFIC PRODUCT CHARACTERISTICS

OVERALL DIMENSIONS

ELECTRICAL CIRCUIT DIAGRAM

3

1

General 4

Interrupting principle 6

Versions available 6

Fields of application 6

Standards and approvals 6

Service safety 7

Accessories 8

Operating mechanism 8

Technical documentation 10

Quality Assurance System 10

Test laboratory 10

Environmental Management System 10

DESCRIPTION

4

DESCRIPTION

GeneralThe new VD4 are a synthesis of the renownedtechnology in designing and constructing vacuuminterrupters embedded in resin poles, and ofexcellency in design, engineering and productionof circuit-breakers.The VD4 medium voltage circuit-breakers usevacuum interrupters embedded in resin poles.Embedding the interrupter in resin makes thecircuit-breaker poles particularly sturdy andprotects the interrupter against shocks,accumulation of dust and humidity.The vacuum interrupter houses the contacts andmakes up the interrupting chamber.

Current interruption in vacuum

The vacuum circuit-breaker does not require aninterrupting and insulating medium.

In any case, on separation of the contacts a metalvapour arc is generated made up exclusively ofmelted and vaporised contact material.The metal vapour only remains supported by theexternal energy until the current is cancelled in thevicinity of natural zero. At that instant, the rapidreduction in the load density carried and the rapidcondensation of the metal vapour, leads toextremely rapid dielectric recovery.The vacuum interrupter therefore recovers theinsulating capacity and the capacity to withstandthe transient return voltage, definitivelyextinguishing the arc.Since high dielectric strength can be reached inthe vacuum, even with minimum distances,interruption of the circuit is also guaranteed when

In fact the interrupters,does not containionisable material.

5

1

1

3

4

5

7

8

9

10

6

2

These characteristics allow opening and closingoperations independent of the operator.The VD4 circuit-breaker operating mechanism isis of simple conception and use and can becustomised with a wide range of accessorieswhich are easy and rapid to install. This simplicityconverts into greater reliability of the apparatus.

The structure

The operating mechanism and the poles are fixedto a metal frame which is also the support for thefixed version of the circuit-breaker. The compactstructure ensures sturdiness and mechanicalreliability.Apart from the isolating contacts and the cord withplug for connection of the auxiliary circuits, thewithdrawable version is completed with the truckfor racking it into and out of the switchboard orenclosure with the door closed.

separation of the contacts takes place a fewmilliseconds before passage of the currentthrough natural zero.The special contacts design and material as wellas the limited duration and the low voltage of thearc guarantee minimum contact wear and long life.Furthermore, the vacuum prevents their oxidationand contamination.

EL type operating mechanism

The low speed of the contacts together with thereduced run and the low mass limit the energyrequired for the operation and therefore guaranteeextremely limited wear of the system. The circuit-breaker is therefore limited in maintenance.The VD4 circuit-breakers use a mechanicaloperating mechanism, with stored energy and freerelease.

Vacuum interruption technique

No contacts oxidation in vacuum

Vacuum interrupter embedded in theresin poles

Interrupter protected against shocks, dustand humidity

Operation under different climatic conditions

Limited switching energy

Stored energy operating mechanism withanti-pumping device supplied as standard

Simple customisation with a completerange of accessories

Fixed and withdrawable version

Compact dimensions

Sealed-for-life poles

Sturdiness and reliability

Limited maintenance

Circuit-breaker racking in and racking outwith door closed

Incorrect and hazardous operations areprevented thanks to special locks in theoperating mechanism and in the truck

Excellent environmental compatibility

Vacuum interrupter embedded in resin pole

1 Upper terminal2 Vacuum interrupter3 Epoxy resin housing4 Stem of moving

contact5 Lower terminal6 Flexible connection

7 Contact forcesprings

8 Push-rod9 Pole fixing

10 Connectionto operatingmechanism

6

1

2

3

4

5

7

8

9

10

6

DESCRIPTION

Interrupting principle of ABB interrupters

In a vacuum interrupter, separation of current-carrying contacts initiates the vacuum arc andthis is maintained until the next current zero and can be influenced by magnetic fields.

Vacuum arcs – diffuse or contracted

Following contact separation, single melting points form on the entire surface of the cathode, producingmetal vapours which support the arc. The diffuse vacuum arc is characterised by expansion over thecontact surface and by an even distribution of thermal stress on the contact surfaces.At the rated current of the vacuum interrupter, the electric arc is always of the diffuse type. Contacterosion is negligible, and the number of current interruptions very high.As the interrupted current value increases (above the rated value), the electric arc tendsto be transformed from the diffuse into the contracted type, due to the Hall effect.Starting at the anode, the arc contracts and as the current rises further it tends to become sharplydefined. Near the area involved there is an increase in temperature with consequent thermal stress onthe contact.To prevent overheating and erosion of the contacts, the arc is kept rotating. With arc rotation itbecomes similar to a moving conductor which the current passes through.

The spiral geometry of ABB vacuum interrupter contactsThe special geometry of the spiral contacts generates a radial magnetic field in all areas of the arccolumn, concentrated over the contact circumferences.An electromagnetic force is self-generated and this acts tangentially, causing rapid arc rotation aroundthe contact axis.This means the arc is forced to rotate and to involve a wider surface than that of a fixed contractedarc.Apart from minimising thermal stress on the contacts, all this makes contact erosion negligible and,above all, allows the interruption process even with very high short-circuits.ABB vacuum interrupters are zero-current interrupters and are free of any re-striking.Rapid reduction in the current charge and rapid condensation of the metal vapours simultaneously withthe zero current, means maximum dielectric strength can be restored between the interrupter contactswithin microseconds.

1 Stem/terminal2 Twist protection3 Bellows4 Interrupter lid5 Shield6 Ceramic insulator7 Shield8 Contacts9 Terminal

10 Interrupter lid

Standards and approvalsThe VD4 circuit-breakers comply with theIEC 62271-100, CEI 17-1 file 1375 Standards andwith those of the major industrialised countries.The VD4 circuit-breakers have undergone thetests indicated below and guarantee the safetyand reliability of the apparatus in service in anyinstallation.

• Type tests: heating, withstand insulation atindustrial frequency, withstand insulation atatmospheric impulse, short-time and peakwithstand current, mechanical life, short-circuitcurrent making and breaking capacity, and no-load cable interruption.

Versions availableThe VD4 circuit-breakers are available in the fixedand withdrawable version with front operatingmechanism. The withdrawable version is availablefor UniGear ZS1 type switchboards and Unisafeswitchboards.

Fields of applicationThe VD4 circuit-breakers are used in electricaldistribution for control and protection of cables,overhead lines, transformer and distributionsubstations, motors, transformers, generators andcapacitor banks.

Vacuum interrupter

7

1

• Individual tests: insulation of the main circuitswith voltage at industrial frequency, auxiliarycircuit and operating mechanism insulation,measurement of the main circuit resistance,mechanical and electrical operation.

Service safetyThanks to the complete range of mechanical andelectrical locks (available on request), it is possi-ble to construct safe distribution switchboards withthe VD4 circuit-breakers.The locking devices have been studied to preventincorrect operations and to inspect the installa-tions guaranteeing maximum operator safety.

Key locks or padlock devices enable opening andclosing operations and/or racking in and rackingout.The racking-out device with the door closedallows the circuit-breaker to be racked into or outof the switchboard with the door closed only.Anti-racking-in locks prevent circuit-breakers withdifferent rated currents from being racked in, andthe racking-in operation with the circuit-breakerclosed.

Schematic diagram of the transition from a diffuse arc to acontracted arc in a vacuum interrupter.

Development of current and voltage trends during a single phasevacuum interruption process.

Radial magnetic field contact arrange-ment with a rotating vacuum arc.

Diffuse arc. Contractionover anode.

Contraction overanode andcathode.

8

DESCRIPTION

Highly reliable operating mechanisms thanks to featuring a lownumber of components and manufactured using production systemsfor large quantities

Extremely limited and simple maintenance

The accessories are common to the whole range and are identical foreither a.c. or d.c. applications

The electrical accessories can be easily and rapidly installed orreplaced thanks to the cabling already prepared with its own plug-socket connectors

Mechanical anti-pumping device is supplied as standard

Built-in closing spring charging lever

Key lock with circuit-breaker open

Protective covering over the opening and closing pushbuttons to beoperated using a special tool

Padlock device on the switching pushbuttons

AccessoriesThe VD4 circuit-breakers have a complete rangeof accessories to satisfy all installation require-ments.The operating mechanism has a standardisedrange of accessories and spare parts which areeasy to identify and order.The accessories are installed conveniently fromthe front of the circuit-breaker. Electrical connec-tion is carried out with plug-socket connectors.Use, maintenance and service of the apparatusare simple and require limited use of resources.

Operating mechanismThe operating mechanism is of the stored energytype and has the anti-pumping device mounted asstandard and is fitted with suitable locks to preventincorrect operations.Each operation sequence is only enabled if all theconditions ensuring it being carried out correctlyare respected.The accessories are the same for all the typeVD4s of circuit-breaker.To facilitate assembly and replacement of acces-sories, assembly seats with appropriated fixedstrikers are provided.

9

1

F

A

M

G

L

I

H

B C E

F

D

Circuit-breaker operating mechanism

A Open/closed auxiliary contactsB Geared motor for closing spring chargingC Built-in closing spring charging leverD Signalling device for circuit-breaker open/closedE Mechanical operation counterF Plug-socket connectors of electrical accessoriesG Signalling for closing springs charged/dischargedH Auxiliary releasesI Closing pushbuttonL Opening pushbuttonM Delivery terminal board of the auxiliary circuits

10

1

Technical documentationTo obtain in-depth knowledge of technical and application aspects of theVD4 circuit-breakers please ask for the following publications:

– UniSafe switchboards code 649228

– UniGear ZS1 type switchboards code 649424

– REF 542plus unit code 649423

– PR512 protection unit code 649092

DESCRIPTION

Environmental ManagementSystemComplies with the ISO 14001 Stand-ards, certified by an external inde-pendent organisation.

Quality Assurance SystemComplies with the ISO 9001 Standards, certifiedby an external independent organisation.

Test laboratoryComplies with �� Standards, accredited by an external independ-ent organisation.

11

2CIRCUIT-BREAKER SELECTION AND ORDERING

General characteristics of fixed circuit-breakers 12

Types of fixed version circuit-breakers available 14

General characteristics of withdrawable circuit-breakersfor UniGear type ZS1 switchgears 16

Types of withdrawable circuit-breakers availablefor UniGear type ZS1 switchboards 18

General characteristics of withdrawable circuit-breakersfor UniSafe switchgears 20

Types of withdrawable circuit-breakers availablefor UniSafe switchboards 22

Optional accessories 24

12

H

I I

L P

General characteristicsof fixed circuit-breakers

(12 - 17.5 - 24 kV)


Circuit-breaker

Standards

Rated voltage

Rated insulation voltage

Withstand voltage at 50 Hz

Impulse withstand voltage

Rated frequency

Rated normal current (40 °C)

Rated breaking capacity

(rated symmetrical short

circuit current)

Rated short-time

withstand current (3 s)

Making capacity

Operation sequence

Opening time

Arcing time

Total breaking time

Closing time

Maximum overall dimensions

Poles center lines

Dimension standardized table

Operating temperature

Tropicalization

Electromagnetic compatibility

VD4 12

12

12

28

75

50-60

630 630 1250 1250 1600 1600 2000 2000 2500

16 16 16 16 – – – – –

20 20 20 20 20 20 20 20 20

25 25 25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5

16 16 16 16 – – – – –

20 20 20 20 20 20 20 20 20

25 25 25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5

40 40 40 40 – – – – –

50 50 50 50 50 50 50 50 50

63 63 63 63 63 63 63 63 63

80 80 80 80 80 80 80 80 80

~ 45

10-15

55-60

~ 80

461 461 461 461 599 599 599 599 616

450 570 450 570 570 700 570 700 700

424 424 424 424 424 424 424 424 424

150 210 150 210 210 275 210 275 275

TN7405 TN7406 TN7405 TN7406 TN7407 TN7408 TN7407 TN7408 TN7408

– 5 ... + 40

IEC 62271-100

CEI 17-1 (File 1375)

Ur [kV]

Us [kV]

Ud (1 min) [kV]

Up [kV]

fr [Hz]

(2) Ir [A]

Isc [kA]

Ik [kA]

Ip [kA]

[O-0,3s-CO-3min-CO]

[ms]

[ms]

[ms]

[ms]

H [mm]

L [mm]

P [mm]

I [mm]

[°C]

IEC: 60068-2-30

721-2-1

IEC: 60694, 61000-6-2

61000-6-4

13

2

VD4 17

17.5

17.5

38

95

50-60

630 630 1250 1250 1600 1600 2000 2000 2500

16 16 16 16 – – – – –

20 20 20 20 20 20 20 20 20

25 25 25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5

16 16 16 16 – – – – –

20 20 20 20 20 20 20 20 20

25 25 25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5

40 40 40 40 – – – – –

50 50 50 50 50 50 50 50 50

63 63 63 63 63 63 63 63 63

80 80 80 80 80 80 80 80 80

~ 45

10-15

55-60

~ 80

461 461 461 461 599 599 599 599 616

450 570 450 570 570 700 570 700 700

424 424 424 424 424 424 424 424 424

150 210 150 210 210 275 210 275 275

TN7405 TN7406 TN7405 TN7406 TN7407 TN7408 TN7407 TN7408 TN7408

– 5 ... + 40

VD4 24

24

24

50

125

50-60

630 630 1250 1250 1600 2000 2500

16 16 16 16 16 16 –

20 20 20 20 20 20 –

25 25 25 25 25 25 25

– – – – – – –

16 16 16 16 16 16 –

20 20 20 20 20 20 –

25 25 25 25 25 25 25

– – – – – – –

40 40 40 40 40 40 –

50 50 50 50 50 50 –

63 63 63 63 63 63

– – – – – – –

~ 45

10-15

55-60

~ 80

631 631 631 631 642 642 661

570 700 570 700 700 700 700

424 424 424 424 424 424 424

210 275 210 275 275 275 275

TN7409 TN7410 TN7409 TN7410 TN7411 TN7411 TN7411

– 5 ... + 40

14

17,5

12

Ur Isc Rated normal current (40°C) [A]kV kA H = 461 H = 599 H = 616 H = 631 H = 642 H = 661 Circuit-breaker type

D = 424 D = 424 D = 424 D = 424 D = 424 D = 424u/l = 205 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310l/g = 217..5 l/g = 237.5 l/g = 237.5 l/g = 282.5 l/g = 282.5 l/g = 282.5

I = 150 I = 210 I = 210 I = 275 I = 275 I = 210 I = 275 I = 275 I = 275L = 450 L = 570 L = 570 L = 700 L = 700 L = 570 L = 700 L = 700 L = 700

16 630 VD4 12.06.16 p15020 630 VD4 12.06.20 p15025 630 VD4 12.06.25 p15031.5 630 VD4 12.06.32 p15016 1250 VD4 12.12.16 p15020 1250 VD4 12.12.20 p15025 1250 VD4 12.12.25 p15031.5 1250 VD4 12.12.32 p15016 630 VD4 12.06.16 p21020 630 VD4 12.06.20 p21025 630 VD4 12.06.25 p21031.5 630 VD4 12.06.32 p21016 1250 VD4 12.12.16 p21020 1250 VD4 12.12.20 p21025 1250 VD4 12.12.25 p21031.5 1250 VD4 12.12.32 p21020 1600 VD4 12.16.20 p21025 1600 VD4 12.16.25 p21031.5 1600 VD4 12.16.32 p21020 2000 VD4 12.20.20 p21025 2000 VD4 12.20.25 p21031.5 2000 VD4 12.20.32 p21020 1600 VD4 12.16.20 p27525 1600 VD4 12.16.25 p27531.5 1600 VD4 12.16.32 p27520 2000 VD4 12.20.20 p27525 2000 VD4 12.20.25 p27531.5 2000 VD4 12.20.32 p27520 2500 VD4 12.25.20 p27525 2500 VD4 12.25.25 p27531.5 2500 VD4 12.25.32 p275

16 630 VD4 17.06.16 p15020 630 VD4 17.06.20 p15025 630 VD4 17.06.25 p15031.5 630 VD4 17.06.32 p15016 1250 VD4 17.12.16 p15020 1250 VD4 17.12.20 p15025 1250 VD4 17.12.25 p15031.5 1250 VD4 17.12.32 p15016 630 VD4 17.06.16 p21020 630 VD4 17.06.20 p21025 630 VD4 17.06.25 p21031.5 630 VD4 17.06.32 p21016 1250 VD4 17.12.16 p21020 1250 VD4 17.12.20 p21025 1250 VD4 17.12.25 p21031.5 1250 VD4 17.12.32 p21020 1600 VD4 17.16.20 p21025 1600 VD4 17.16.25 p21031.5 1600 VD4 17.16.32 p21020 2000 VD4 17.20.20 p21025 2000 VD4 17.20.25 p21031.5 2000 VD4 17.20.32 p21020 1600 VD4 17.16.20 p27525 1600 VD4 17.16.25 p27531.5 1600 VD4 17.16.32 p27520 2000 VD4 17.20.20 p27525 2000 VD4 17.20.25 p27531.5 2000 VD4 17.20.32 p27520 2500 VD4 17.25.20 p27525 2500 VD4 17.25.25 p27531.5 2500 VD4 17.25.32 p275

VD4 fixed circuit-breaker without bottom and top terminals

Types of fixed version circuit-breakers availableComplete the circuit-breaker selected with the optional accessories indicated on the following pages.


Notes

H = Circuit-breakerheight.

L = Circuit-breakerwidth.

D = Circuit-breakerdepth.

u/l = Distance betweenbottom and topterminal.

l/g = Distance betweenbottom terminal andcircuit-breakerresting surface.

I = Horizontal centredistance betweenpoles.

15

2

VD4 fixed circuit-breaker without bottom and top terminals

24

Ur Isc Rated normal current (40°C) [A]kV kA H = 461 H = 599 H = 616 H = 631 H = 642 H = 661 Circuit-breaker type

D = 424 D = 424 D = 424 D = 424 D = 424 D = 424u/l = 205 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310l/g = 217.5 l/g = 237.5 l/g = 237.5 l/g = 282.5 l/g = 282.5 l/g = 282.5

I = 150 I = 210 I = 210 I = 275 I = 275 I = 210 I = 275 I = 275 I = 275L = 450 L = 570 L = 570 L = 700 L = 700 L = 570 L = 700 L = 700 L = 700

16 630 VD4 24.06.16 p21020 630 VD4 24.06.20 p21025 630 VD4 24.06.25 p21016 1250 VD4 24.12.16 p21020 1250 VD4 24.12.20 p21025 1250 VD4 24.12.25 p21016 630 VD4 24.06.16 p27520 630 VD4 24.06.20 p27525 630 VD4 24.06.25 p27516 1250 VD4 24.12.16 p27520 1250 VD4 24.12.20 p27525 1250 VD4 24.12.25 p27516 1600 VD4 24.16.16 p27520 1600 VD4 24.16.20 p27525 1600 VD4 24.16.25 p2716 2000 VD4 24.20.16 p27520 2000 VD4 24.20.20 p27525 2000 VD4 24.20.25 p27525 2500 VD4 24.25.25 p275

Fixed circuit-breaker standard fittingsThe basic versions of the fixed circuit-breakers arethree-pole and fitted with:– EL type manual operating mechanism– mechanical signalling device for closing springs

charged/discharged– mechanical signalling device for circuit-breaker

open/closed– closing pushbutton– opening pushbutton

Notes

H = Circuit-breakerheight.

L = Circuit-breakerwidth.

D = Circuit-breakerdepth.


l/g = Distance betweenbottom terminal andcircuit-breakerresting surface.


– operation counter– set of ten circuit-breaker open/

closed auxiliary contacts– lever for manually charging the

closing springs– auxiliary circuit support terminal

board.

16

H

I I

L P


General characteristics of withdrawablecircuit-breakers for UniGear type ZS1switchgears (12 - 17.5 - 24 kV)

(1) Rated uninterruptedcurrents guaranteedwith withdrawablecircuit-breakerinstalled in UniGeartype ZS1 switchgearwith 40°C air tempera-ture

(2) The 2300 A rateduninterrupted currentis guaranteed withnatural ventilation.The 2500 A rateduninterrupted currentis guaranteed withforced ventilation.

Circuit-breaker

Standards

Rated voltage




Rated frequency




circuit current)

Rated short-time


Making capacity

Operation sequence

Opening time

Arcing time

Total breaking time

Closing time


Poles center lines



Tropicalization


IEC 62271-100

CEI 17-1 (File 1375)

Ur [kV]

Us [kV]

Ud (1 min) [kV]

Up [kV]

fr [Hz]

(1) Ir [A]

Isc [kA]

Ik [kA]

Ip [kA]

[O-0,3s-CO-3min-CO]

[ms]

[ms]

[ms]

[ms]

H [mm]

L [mm]

P [mm]

I [mm]

[°C]

IEC: 60068-2-30

721-2-1

IEC: 60694, 61000-6-2

61000-6-4

VD4/P 12

12

12

28

75

50-60

630 1250 1600 1600 2000 2000 2500

16 16 – – – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

16 16 – – – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

40 40 – – – – –

50 50 50 50 50 50 50

63 63 63 63 63 63 63

80 80 80 80 80 80 80

~ 45

10-15

55-60

~ 80

632 632 690 690 690 690 690

503 503 653 853 653 853 853

664 664 642 642 642 642 642

150 150 210 275 210 275 275

TN7412 TN7412 TN7415 TN7416 TN7415 TN7416 TN7417

– 5 ... + 40

17

2

VD4/P 17

17.5

17.5

38

95

50-60

630 1250 1600 1600 2000 2000 2500

16 16 – – – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

16 16 – – – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

40 40 – – – – –

50 50 50 50 50 50 50

63 63 63 63 63 63 63

80 80 80 80 80 80 80

~ 45

10-15

55-60

~ 80

632 632 690 690 690 690 690

503 503 653 853 653 853 853

664 664 642 642 642 642 642

150 150 210 275 210 275 275

TN7412 TN7412 TN7415 TN7416 TN7415 TN7416 TN7417

– 5 ... + 40

VD4/P 24

24

24

50

125

50-60

630 630 1250 1250 1600 2000 2500 (2)

16 16 16 16 16 16 16

20 20 20 20 20 20 20

25 25 25 25 25 25 25

– – – – – – –

16 16 16 16 16 16 16

20 20 20 20 20 20 20

25 25 25 25 25 25 25

– – – – – – –

40 40 40 40 40 40 40

50 50 50 50 50 50 50

63 63 63 63 63 63 63

– – – – – – –

~ 45

10-15

55-60

~ 80

794 794 794 794 838 838 838

653 853 653 853 853 853 853

802 802 802 802 790 790 790

210 275 210 275 275 275 275

TN7413 TN7414 TN7413 TN7414 TN7418 TN7418 TN7418

– 5 ... + 40

18


12

17.5

Ur Isc Rated normal current (40°C) [A] (*)

kV kA L = 650 L = 800 L = 1000 L = 1000 L = 800 L = 1000 L = 1000 Circuit-breaker typeI = 150 I = 210 I = 275 I = 275 I = 210 I = 275 I = 275u/l = 205 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310ø = 35 ø = 79 ø = 79 ø = 109 ø = 35 ø = 35 ø = 79

16 630 VD4/P 12.06.16 p15020 630 VD4/P 12.06.20 p15025 630 VD4/P 12.06.25 p15031.5 630 VD4/P 12.06.32 p15016 1000 VD4/P 12.12.16 p15020 1000 VD4/P 12.12.20 p15025 1000 VD4/P 12.12.25 p15031.5 1000 VD4/P 12.12.32 p15016 1250 VD4/P 12.12.16 p15020 1250 VD4/P 12.12.20 p15025 1250 VD4/P 12.12.25 p15031.5 1250 VD4/P 12.12.32 p15020 1600 VD4/P 12.16.20 p21025 1600 VD4/P 12.16.25 p21031.5 1600 VD4/P 12.16.32 p21020 2000 VD4/P 12.20.20 p21025 2000 VD4/P 12.20.25 p21031.5 2000 VD4/P 12.20.32 p21020 1600 VD4/P 12.16.20 p27525 1600 VD4/P 12.16.25 p27531.5 1600 VD4/P 12.16.32 p27520 2000 VD4/P 12.20.20 p27525 2000 VD4/P 12.20.25 p27531.5 2000 VD4/P 12.20.32 p27520 2500 VD4/P 12.25.20 p27525 2500 VD4/P 12.25.25 p27531.5 2500 VD4/P 12.25.32 p275

16 630 VD4/P 17.06.16 p15020 630 VD4/P 17.06.20 p15025 630 VD4/P 17.06.25 p15031.5 630 VD4/P 17.06.32 p15016 1000 VD4/P 17.12.16 p15020 1000 VD4/P 17.12.20 p15025 1000 VD4/P 17.12.25 p15031.5 1000 VD4/P 17.12.32 p15016 1250 VD4/P 17.12.16 p15020 1250 VD4/P 17.12.20 p15025 1250 VD4/P 17.12.25 p15031.5 1250 VD4/P 17.12.32 p15020 1600 VD4/P 17.16.20 p21025 1600 VD4/P 17.16.25 p21031.5 1600 VD4/P 17.16.32 p21020 2000 VD4/P 17.20.20 p21025 2000 VD4/P 17.20.25 p21031.5 2000 VD4/P 17.20.32 p21020 1600 VD4/P 17.16.20 p27525 1600 VD4/P 17.16.25 p27531.5 1600 VD4/P 17.16.32 p27520 2000 VD4/P 17.20.20 p27525 2000 VD4/P 17.20.25 p27531.5 2000 VD4/P 17.20.32 p27520 2500 VD4/P 17.25.20 p27525 2500 VD4/P 17.25.25 p27531.5 2500 VD4/P 17.25.32 p275

VD4/P withdrawable circuit-breaker for UniGear type ZS1 switchboards

Types of widrawable version circuit-breakers available for UniGear type ZS1 switchboardsComplete the circuit-breaker selected with the optional accessories indicated on the following pages.

Notes

L = Width of the switch-board.



Ø = Diameter of isolatingcontact.

19

2

24

Ur Isc Rated normal current (40°C) [A] (*)

kV kA L = 650 L = 800 L = 1000 L = 1000 L = 800 L = 1000 L = 1000 Circuit-breaker typeI = 150 I = 210 I = 275 I = 275 I = 210 I = 275 I = 275u/l = 205 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310ø = 35 ø = 79 ø = 79 ø = 109 ø = 35 ø = 35 ø = 79

16 630 VD4/P 24.06.16 p21020 630 VD4/P 24.06.20 p21025 630 VD4/P 24.06.25 p21016 1000 VD4/P 24.12.16 p21020 1000 VD4/P 24.12.20 p21025 1000 VD4/P 24.12.25 p21016 1250 VD4/P 24.12.16 p21020 1250 VD4/P 24.12.20 p21025 1250 VD4/P 24.12.25 p21016 630 VD4/P 24.06.16 p27520 630 VD4/P 24.06.20 p27525 630 VD4/P 24.06.25 p27516 1000 VD4/P 24.12.16 p27520 1000 VD4/P 24.12.20 p27525 1000 VD4/P 24.12.25 p27516 1250 VD4/P 24.12.16 p27520 1250 VD4/P 24.12.20 p27525 1250 VD4/P 24.12.25 p27516 1600 VD4/P 24.16.16 p27520 1600 VD4/P 24.16.20 p27525 1600 VD4/P 24.16.25 p27516 2000 VD4/P 24.20.16 p27520 2000 VD4/P 24.20.20 p27525 2000 VD4/P 24.20.25 p27516 2300 VD4/P 24.25.16 p27520 2300 VD4/P 24.25.20 p27525 2300 VD4/P 24.25.25 p27516 2500 VD4/P 24.25.16 p27520 2500 VD4/P 24.25.20 p27525 2500 VD4/P 24.25.25 p275

VD4/P withdrawable circuit-breaker for UniGear type ZS1 switchboards

Notes





(*) The 2300 A rateduninterrupted current isguaranteed with naturalventilation.The 2500 A rateduninterrupted current isguaranteed with forcedventilation.

Standard fittings of withdrawable circuit-breakersfor UniGear type ZS1 switchboardsThe basic versions of the withdrawable circuit-breakers are three-poleand fitted with:– EL type manual operating mechanism– mechanical signalling device for closing springs charged/discharged– mechanical signalling device for circuit-breaker open/closed– closing pushbutton– opening pushbutton– operation counter– set of ten circuit-breaker open/closed auxiliary contacts– lever for manually charging the closing springs– isolating contacts– cord with connector (plug only) for auxiliary circuits, with striker pin which

does not allow the plug to be inserted into the socket if the rated current ofthe circuit-breaker is different from the rated current of the panel

– racking-in/out lever (the quantity must be defined according to the numberof pieces of apparatus ordered)

– locking electromagnet in the truck. This prevents the circuit-breaker beingracked into the panel with the auxiliary circuits disconnected (plug notinserted in the socket)

– auxiliary circuit support terminal board.

20

H

I I

L P


General characteristicsof withdrawable circuit-breakersfor Unisafe switchgears (12 - 17.5 - 24 kV)

(1) Rated uninterruptedcurrents guaranteedwith withdrawablecircuit-breakerinstalled in UniSafeswitchboard with 40°Cair temperature

(2) Please ask us for theoverall dimensions.

Circuit-breaker

Standards

Rated voltage




Rated frequency




circuit current)

Rated short-time


Making capacity

Operation sequence

Opening time

Arcing time

Total breaking time

Closing time


Poles center lines



Tropicalization


VD4/P 12

12

12

28

75

50-60

630 1250 630 1250 1600 2000 2500

16 16 16 16 – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

16 16 16 16 – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

40 40 40 40 – – –

50 50 50 50 50 50 50

63 63 63 63 63 63 63

80 80 80 80 80 80 80

~ 45

10-15

55-60

~ 80

632 632 632 632 690 690 690

503 503 503 503 653 653 853

664 664 664 664 642 642 642

150 150 210 210 210 210 275

TN7412 TN7412 (2) (2) TN7415 TN7415 TN7417

– 5 ... + 40

IEC 62271-100

CEI 17-1 (File 1375)

Ur [kV]

Us [kV]

Ud (1 min) [kV]

Up [kV]

fr [Hz]

(1) Ir [A]

Isc [kA]

Ik [kA]

Ip [kA]

[O-0,3s-CO-3min-CO]

[ms]

[ms]

[ms]

[ms]

H [mm]

L [mm]

P [mm]

I [mm]

[°C]

IEC: 60068-2-30

721-2-1

IEC: 60694, 61000-6-2

61000-6-4

21

2

VD4/P 17

17.5

17.5

38

95

50-60

630 1250 630 1250 1600 2000 2500

16 16 16 16 – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

16 16 16 16 – – –

20 20 20 20 20 20 20

25 25 25 25 25 25 25

31.5 31.5 31.5 31.5 31.5 31.5 31.5

40 40 40 40 – – –

50 50 50 50 50 50 50

63 63 63 63 63 63 63

80 80 80 80 80 80 80

~ 45

10-15

55-60

~ 80

632 632 632 632 690 690 690

503 503 503 503 653 653 853

664 664 664 664 642 642 642

150 150 210 210 210 210 275

TN7412 TN7412 (2) (2) TN7415 TN7415 TN7417

– 5 ... + 40

VD4/P 24

24

24

50

125

50-60

630 1250 1600 2000

16 16 16 16

20 20 20 20

25 25 25 25

– – – –

16 16 16 16

20 20 20 20

25 25 25 25

– – – –

40 40 40 40

50 50 50 50

63 63 63 63

– – – –

~ 45

10-15

55-60

~ 80

794 794 853 853

653 653 853 853

802 802 790 790

210 210 275 275

TN7413 TN7413 TN7418 TN7418

– 5 ... + 40

22

12

Types of widrawable version circuit-breakers available for UniSafe switchboardsComplete the circuit-breaker selected with the optional accessories indicated on the following pages.

17.5

VD4/P withdrawable circuit-breaker for UniSafe switchboardsUr Isc Rated normal current (40°C) [A]

kV kA L = 600 L = 750 L = 750 L = 1000 L = 800 L = 1000 Circuit-breaker typeI = 150 I = 210 I = 210 I = 275 I = 210 I = 275u/l = 205 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310ø = 35 ø = 35 (1) ø = 79 ø = 109 ø = 35 ø = 79

16 630 VD4/P 12.06.16 p15020 630 VD4/P 12.06.20 p15025 630 VD4/P 12.06.25 p15031.5 630 VD4/P 12.06.32 p15016 1250 VD4/P 12.12.16 p15020 1250 VD4/P 12.12.20 p15025 1250 VD4/P 12.12.25 p15031.5 1250 VD4/P 12.12.32 p15016 630 VD4/P 12.06.16 p21020 630 VD4/P 12.06.20 p21025 630 VD4/P 12.06.25 p21031.5 630 VD4/P 12.06.32 p21016 1250 VD4/P 12.12.16 p21020 1250 VD4/P 12.12.20 p21025 1250 VD4/P 12.12.25 p21031.5 1250 VD4/P 12.12.32 p21020 1600 VD4/P 12.16.20 p21025 1600 VD4/P 12.16.25 p21031.5 1600 VD4/P 12.16.32 p21020 2000 VD4/P 12.20.20 p21025 2000 VD4/P 12.20.25 p21031.5 2000 VD4/P 12.20.32 p21020 2500 VD4/P 12.25.20 p27525 2500 VD4/P 12.25.25 p27531.5 2500 VD4/P 12.25.32 p275

16 630 VD4/P 17.06.16 p15020 630 VD4/P 17.06.20 p15025 630 VD4/P 17.06.25 p15031.5 630 VD4/P 17.06.32 p15016 1250 VD4/P 17.12.16 p15020 1250 VD4/P 17.12.20 p15025 1250 VD4/P 17.12.25 p15031.5 1250 VD4/P 17.12.32 p15016 630 VD4/P 17.06.16 p21020 630 VD4/P 17.06.20 p21025 630 VD4/P 17.06.25 p21031.5 630 VD4/P 17.06.32 p21016 1250 VD4/P 17.12.16 p21020 1250 VD4/P 17.12.20 p21025 1250 VD4/P 17.12.25 p21031.5 1250 VD4/P 17.12.32 p21020 1600 VD4/P 17.16.20 p21025 1600 VD4/P 17.16.25 p21031.5 1600 VD4/P 17.16.32 p21020 2000 VD4/P 17.20.20 p21025 2000 VD4/P 17.20.25 p21031.5 2000 VD4/P 17.20.32 p21020 2500 VD4/P 17.25.20 p27525 2500 VD4/P 17.25.25 p27531.5 2500 VD4/P 17.25.32 p275


Notes





(1) Please contact usfor availability of thisversion.

23

22

24

Ur Isc Rated normal current (40°C) [A]

kV kA L = 600 L = 750 L = 750 L = 1000 L = 800 L = 1000 Circuit-breaker typeI = 150 I = 210 I = 210 I = 275 I = 210 I = 275u/l = 205 u/l = 310 u/l = 310 u/l = 310 u/l = 310 u/l = 310ø = 35 ø = 35 (1) ø = 79 ø = 109 ø = 35 ø = 79

16 630 VD4/P 24.06.16 p21020 630 VD4/P 24.06.20 p21025 630 VD4/P 24.06.25 p21016 1250 VD4/P 24.12.16 p21020 1250 VD4/P 24.12.20 p21025 1250 VD4/P 24.12.25 p21016 1600 VD4/P 24.16.16 p27520 1600 VD4/P 24.16.20 p27525 1600 VD4/P 24.16.25 p27516 2000 VD4/P 24.20.16 p27520 2000 VD4/P 24.20.20 p27525 2000 VD4/P 24.20.25 p275

VD4/P withdrawable circuit-breaker for UniSafe switchboards

Notes





(1) Please contact us foravailability of thisversion.

Standard fittings of withdrawablecircuit-breakers for UniSafe switchboardsThe basic versions of the withdrawable circuit-breakers are always three-pole and fitted with:– EL type manual operating mechanism– mechanical signalling device for closing

springs charged/discharged– mechanical signalling device for circuit-breaker

open/closed– closing pushbutton– opening pushbutton– operation counter– set of ten circuit-breaker open/closed auxiliary

contacts– lever for manually charging the closing springs– isolating contacts– cord with connector (plug only) for auxiliary

circuits, with striker pin which does not allow theplug to be inserted into the socket if the ratedcurrent of the circuit-breaker is different from therated current of the panel

– racking-in/out lever (the quantity must bedefined according to the number of pieces ofapparatus ordered)

– locking electromagnet in the truck. This preventsthe circuit-breaker being racked into the panelwith the auxiliary circuits disconnected(plug not inserted in the socket).

24


Optional accessoriesThe accessories identified with the same number are alternative to each other.

1 Shunt opening release (-M01)

This allows remote opening control of the apparatus.The release can operate both in direct and alternating current.This release is suitable for instantaneous service. In this case, the minimumcurrent impulse time must be 100 ms.

CharacteristicsUn: 124 V–

Un: 130 - 48 - 60 - 110 - 120 - 120 - 127 - 220 - 240 - 250 - 380 - 400 - 440 V– / V ~

Un: 480 V ~

Operating limits: 70 … 110 % Un

Power on inrush (Ps): DC 200 W; AC = 200 VA

Inrush duration: approx. 100 ms

Maintenance power (Pc): DC = 5 W; AC = 5 VA

Opening time: max 60 ms

Insulation voltage: 2500 V 50 Hz (per 1 min)

2B Opening solenoid (-MO3) (1)

The opening solenoid is a special release with demagnetisation.Please contact us for availability of this accessory.

3 Shunt closing release (-MC)

This allows remote closing control of the apparatus.The release can operate both in direct and alternating current.This release is suitable both for instantaneous and permanent service.In the case of instantaneous service, the minimum current impulse time mustbe 100 ms. The permanently supplied release carries out the electrical anti-pumping function.It keeps all the electrical and operating characteristics of the shunt openingrelease.The opening solenoid is a special release with demagnetisation.Please contact us for availability of this accessory.

2A Additional shunt opening release (-M02)

Like the shunt opening release described above, this allows remote openingcontrol of the apparatus and can be supplied by a circuit completely separatefrom the -MO1 release.It keeps all the electrical and operating characteristics of the shunt openingrelease.

25

2

4 Undervoltage release (-MU)

The undervoltage release opens the circuit-breaker when there is notablelowering or lack of its power supply. It can be used for remote release (bymeans of normally closed type push-buttons), lock on closing or to control thevoltage in the auxiliary circuits.The circuit-breaker can only close with the release supplied (the closure lockis made mechanically).

The release can operate both in direct and alternating current.The undervoltage release is available in the following versions:

4A Undervoltage release with power supply branched on the supply side.

4B Undervoltage release with electronic time delay device (0.5 - 1 - 1.5 - 2 -3 s) (power supply branched on the supply side). This device is set at 0.5s (for adjustment, please see the Electric Circuit Diagram chapter).

CharacteristicsUn: 24 V – 120-127 V ~

Un: 30 V ~ 220-240 V ~

Un: 48 V ~ 240-250 V ~

Un: 60 V ~ 380-400 V ~

Un: 110-120 V ~ 440-480 V ~

Operating limits:– circuit-breaker opening: 35-70% Un– circuit-breaker closing: 85-110% Un


Inrush duration approx.100 ms

Maintenance power (Pc): DC = 5 W; AC = 5 VA

Opening time: 30 ms


Electronic time delay device

The electronic time delay device must be mounted externally in relation to thecircuit-breaker. It allows release trip with established and adjustable times.The use of the undervoltage release is recommended in order to prevent tripswhen the power supply network of the release may be subject to cuts orvoltage drops of short duration.If it is not supplied, circuit-breaker closing is disabled.The time delay device must be combined with an undervoltage release withthe same voltage as the delay device.

Characteristics of the time-delay device

Un: 24-30-48-60-110-115-220-250 V

Adjustable opening time (release + time delay device): 0.5-1-1.5-2-3 s

26


(*) With the group of 10auxiliary contacts andthe maximum of therequested applications,available contacts willbe four openingcontacts, signallingcircuit-breaker openand three closingcontacts, signallingcircuit-breaker closed.With the group of 15auxiliary contacts andthe maximum of therequested applications,available contacts willbe five openingcontacts, signallingcircuit-breaker openand six closingcontacts, signallingcircuit-breaker closed.

5 Undervoltage release mechanical override

This is a mechanical device which allows the undervoltage release trip to betemporarily excluded.It is always fitted with electrical signalling. Please contact us for availability ofthis accessory.

6 Contact for signalling undervoltage energised/de-energised

The undervoltage releases can be fitted with a contact (normally closed oropen as desired) for signalling whether the undervoltage release is ener-gised or de-energised, and for remote signalling of the release state.The contact provides the following indication:– contact open: release energised– contact closed: release de-energised.

7 Circuit-breaker auxiliary contacts

Electrical signalling of circuit-breaker open/closed can be provided with a setof 15 auxiliary contacts as an alternative to the 10 provided as standard (*).

CharacteristicsUn: 24 ... 220 V AC-DC

Rated current Ith2 = 10 A


Electric resistance: 3 mOhm

Rated current and breaking capacity in category AC11 e DC11:

Un Cos � T In Icu220 V ~ 0.7 -- 2.5 A 25 A

24 V – -- 15 ms 10 A 12 A

60 V – -- 15 ms 6 A 8 A

110 V – -- 15 ms 4 A 5 A

220 V – -- 15 ms 1 A 2 A

8 Transient contact

Transient contact (-BB4) with momentary closing during circuit-breakeropening.Please contact us for availability of this accessory.

27

2

9 Position contact

Position contact (-BT3) of the withdrawable circuit-breaker open duringisolating stroke (installed on the truck, only available for withdrawable/Pcircuit-breaker, when the locking magnet is provided (-RL1) on the operatingmechanism and the transmitted contacts are not provided). It prevents remoteclosing during traverse into the unit.

10 Transmitted contacts

Transmitted contacts of the withdrawable circuit-breaker (installed on thetruck, only available for withdrawable circuit-breaker).These contacts are either in addition to or as an alternative to the positioncontacts (for signalling circuit-breaker racked out) located in the unit.

11 Motor operator (-MS)

This carries out automatic charging of the circuit-breaker operating mecha-nism closing springs. After circuit-breaker closing, the geared motor immedi-ately recharges the closing springs.In the case of a power cut or during maintenance work, the closing springscan be charged manually in any case (by means of the special crank handleincorporated in the operating mechanism).

CharacteristicsUn: 24-30-48-60-100-130-220-250 V



Rated power (Pn): DC = 200 W; AC = 200 VA

Inrush duration: 0,2 s

Charging time: 4-5 s

Insulating voltage:: 2500 V 50 Hz (per 1 min)

12 Contact for signalling closing springs charged/discharged

Mounted as standard when the motor operator is provided. This consists of amicroswitch which allows remote signalling of the state of the circuit-breakeroperating mechanism springs.The contact provides the following indication:– contact open: signalling of springs discharged– contact closed: signalling of springs charged.

28

2

Protections and locks

Various mechanical and electromechanical locking and protection devices are available.

13 Opening and closing pushbutton protection

The protection allows the opening and closing pushbuttons to be operatedusing a special tool.

14 Opening and closing pushbutton padlocks

The device allows the opening and closing pushbuttons to be locked using amaximum of three padlocks (not supplied): ø 4 mm.

15 Key lock in open position

The lock is activated by a special circular lock.Different keys (for a single circuit-breaker) are available, or the same keys(for several circuit-breakers).

16 Locking magnet on the operating mechanism (-RL1)

This only allows activation of the operating mechanism when the lockingmagnet is energized.CharacteristicsUn: 24 - 30 - 48 - 60 - 100 - 125 - 220 - 250 V–

Un: 48 - 110 - 120 (127) - 230 (220/240) V~ 50 Hz

Un: 110 (127) - 230 (220/240) V~ 60 Hz



Continuous power (Pc): DC = 5 W; AC = 5 VA

Inrush duration: 150 ms

17 Locking magnet on truck (-RL2)

Compulsory accessory for the withdrawable versions for UniSafe andUniGear ZS1 type switchboards, to prevent circuit-breaker racking into theswitchboard with the auxiliary circuit plug disconnected. The plug realises theanti-racking in lock for different rated current (by means of special pins).For the electrical characteristics, see the locking magnet on the operatingmechanism (accessory 16).

18 Interlock for fixed circuit-breaker

Device for fixed circuit-breakers which are converted into withdrawable onesby the customer.Please contact us for availability of this accessory.

19 Mechanical interlock

This device prevents the switchboard door being opened with the circuit-breaker racked-in. Only provided for circuit-breakers used in UniSafe switch-boards, fitted with special striker on the switchboard.Please contact us for availability of this accessory.


29

3

Resistance to vibrations 30

Tropicalization 30

Altitude 30

Anti-pumping device 31

Environmental protection programme 31

PR512 protection device 31

Spare parts 32


30

Ka = e m (H – 1000)/8150

(IEC 60071-2)

Resistance to vibrationsVD4 circuit-breakers are unaffected by mechani-cally generated vibrations.For the versions approved by the naval registers,please contact us.

TropicalizationVD4 circuit-breakers are manufactured in compli-ance with the strictest regulations for use in hot-humid-saline climates.All the most important metal components aretreated against corrosive factors according toUNI 3564-65 Standards environmental class C.Galvanisation is carried out in accordance withUNI ISO 2081 Standards, classification codeFe/Zn 12, with a thickness of 12x10-6 m, protectedby a conversion layer mainly consisting ofchromates in compliance with the UNI ISO 5420Standards.These construction characteristics mean that thewhole VD4 series of circuit-breakers and its ac-cessories comply with climate graph 8 of the IEC60721-2-1 and IEC 60068-2-2 (Test B: Dry Heat /IEC 60068-2-30 (Test Bd: Damp Heat, cyclic)Standards.

AltitudeThe insulating property of air decreases as thealtitude increases, therefore this must alwaysbe taken into account for external insulation ofthe apparatus (the internal insulation of the inter-rupters do not undergo any variations as it isguaranteed by vacuum).The phenomenon must always be taken into con-sideration during the design stage of the insulat-ing components of apparatus to be installed over1000 m above sea level In this case a correctioncoefficient must be considered, which can betaken from the graph to the side, built up on thebasis of the indications in the IEC 60694 Stand-ards.The following example is a clear interpretation ofthe indications given above.

Graph for determining the Ka correction factoraccording to the altitude

H = altitude in metres;m = value referred to industrial frequency and the

atmospheric impulse withstand voltages and thosebetween phase and phase.


Example• Installation altitude 2000 m• Operation at the rated voltage of 12 kV• Withstand voltage at industrial frequency 28 kV

rms• Impulse withstand voltage 75 kVp• Factor Ka obtained from graph = 1.13.

Considering the above parameters, the apparatuswill have to withstand the following values (undertest and at zero altitude, i.e. at sea level):

– withstand voltage at industrial frequency equalto:

28 x 1.13 = 31.6 kVrms

– impulse withstand voltage equal to:

75 x 1.13 = 84.7 kVp.

From the above, it can be deduced that for instal-lations at an altitude of 2000 m above sea level,with 12 kV service voltage, apparatus must beprovided with 17.5 kV rated voltage, character-ised by insulation levels at industrial frequency of38 kVrms with 95 kVp impulse withstand voltage.

31

3

Environmental protection programmeVD4 circuit-breakers are manufactured in accord-ance with the ISO 14000 Standards (Guidelinesfor environmental management).The production processes are carried out in com-pliance with the Standards for environmental pro-tection in terms of reduction in energy consump-tion as well as in raw materials and production ofwaste materials. All this is thanks to the mediumvoltage apparatus manufacturing facility environ-mental management system.Assessment of the environmental impact of thelife cycle of the product, obtained by minimisingenergy consumption and overall raw materials ofthe product, became a concrete matter during thedesign stage by means of targeted selection ofthe materials, processes and packing.This is to allow maximum recycling at the end ofthe useful life cycle of the apparatus.

Anti-pumping deviceThe EL operating mechanism on HD4 circuit-breakers (in all versions) is fitted with a mechani-cal anti-pumping device which prevents re-closingdue to either electrical or mechanical commands.Should both the closing command and any one ofthe opening commands be active at the sametime, there would be a continuous succession ofopening and closing operations.The anti-pumping device avoids this situation, en-suring that each closing operation is only followedby a single opening operation and that there is noclosing operation after this. To obtain a furtherclosing operation, the closing command must bereleased and then relaunched.Furthermore, the anti-pumping device only allowscircuit-breaker closure if the following conditionsare present at the same time:– operating mechanism springs fully charged– opening pushbutton and/or opening release

(-MO1/-MO2) not enabled– circuit-breaker open.

PR512 protection deviceThe self-supplied PR512 is available forprotection of the installations.depending on the version, the PR512 carries outthe following functions:• 50-51-50N-51N protection• current measurement with display of the maxi-

mum value between phases• dialogue.For further informationabout the PR512,please consulttechnical catalogue649092.

32

3SPECIFIC PRODUCT CHARACTERISTICS

Spare partsReplacement can only be carried out bytrained personnel and/or in our workshops:– opening springs– closing springs– complete pole– operating mechanism box– bushings, terminals and insulating protections.

Replacement which can be carried out by thecustomer:– isolating contacts– geared motor limit switch contact.

Ordering

For availability and ordering of spare parts,please contact our Service, specifying the circuit-breaker serial number.

33

4OVERALL DIMENSIONS

Fixed circuit-breakers 34

Withdrawable circuit-breakers for UniGear type ZS1and UniSafe switchgears 38

34

VD4TN 7405Ur 12 kVIr 630 A

1250 AIsc 16 kA

20 kA25 kA31,5 kA

VD4TN 7405Ur 17,5 kVIr 630 A

1250 AIsc 16 kA

20 kA25 kA31,5 kA


1250 AIsc 16 kA

20 kA25 kA31,5 kA

VD4TN 7406Ur 17,5 kVIr 630 A

1250 AIsc 16 kA

20 kA25 kA31,5 kA

A

A

A

150 150

120

1222

45 250

217.

520

5

461

115�

475

95

24

77.5

345

114

44

12409424

32�

25 400

435

450

236 28

49 28

170

165631

248

12M10M2X

45�

22

22

(*) (*)

(*) (*)

�

�

12M10M2X

45�22

22

A

210 210

2212

160

475

45 250 114 12

95

461

217.

520

5

24

115

77.5

345 44

409424

32

25 520

570

435

308

296 2849 28

170

165631

Fixed circuit-breakers

OVERALL DIMENSIONS

(*) Interchangeability of fixing points withprevious series (345 x 400).


35

4


2000 AIsc 20 kA

25 kA31,5 kA

VD4TN 7407Ur 17,5 kVIr 1600 A

2000 AIsc 20 kA

25 kA31,5 kA


2000 A2500 A

Isc 20 kA25 kA31,5 kA

VD4TN 7408Ur 17,5 kVIr 1600 A

2000 A2500 A

Isc 20 kA25 kA31,5 kA

A

A

�A

570

435

25520

170

165631

308

296 2849 28

45 250

24

237.

531

0

599

475

95

77.5

345 44

409 12

424

32

210 210

22 12

160

1212

20 20

2020

2xM10

4xM12

(*) (*)

�

A

435

700

25 650

170

16

361 2849 28

5631

373

237

310

599

95

475

45 25024

78

345 44

12409424

114

32

275 275

213

22 12

95

616

12M4x

10M2x20 20

2020

1212

1600-2000A

2500A

(*) (*)


(*) Interchangeability of fixingpoints with previous series(345 x 650).

36


1250 AIsc 16 kA

20 kA25 kA


1250 AIsc 16 kA

20 kA25 kA

A

A

(*) (*)

(*) (*)



Fixed circuit-breakers

OVERALL DIMENSIONS

37

4


2000 AIsc 16 kA

20 kA25 kA

VD4TN 7411Ur 24 kVIr 2500 AIsc 25 kAA

A

700

435

25 650

373

361 28

49 28

170

1656

31

275 275

22 12

213

45 250 114 12

475

95

282.

531

064

2

24

77.5

345 44

409424

95

661

1212

20 202xM10 4xM12

2020

1600-2000A

2500A

(*) (*)

(*) Interchangeability of fixingpoints with previous series(345 x 650).

38

��

�

492

618

503

19

14531

624.

5

42.5234

213

1656

31

36 2849

28

55

150 150

501490

609

4838

426

020

5

35

154

76 18

25 320370383438

79

129

10

15122

53

36

71

62.5

628

38

662

91

3598

630A 1250A

��

468

8

636

653 14

44 230

691

213

16

5631

36 2849 28

25 320

359.5370383303 53

428

031

0

688

8

76

165

71

7912

2

36

62.5

642

38

210 210

640

650

55

589

48

38

VD4/PTN 7412Ur 12 kVIr 630 A

1250 AIsc 16 kA

20 kA25 kA31,5 kA

VD4/PTN 7412Ur 17,5 kVIr 630 A

1250 AIsc 16 kA

20 kA25 kA31,5 kA


2000 AIsc 20 kA

25 kA31,5 kA

VD4/PTN 7415Ur 17,5 kVIr 1600 A

2000 AIsc 20 kA

25 kA31,5 kA

Withdrawable circuit-breakers for UniGear type ZS1 and UniSafe switchgears

OVERALL DIMENSIONS

39

4

�

�

842

468

8

853 14

144 230

691

36 28

49 28

213

1656

31

428

031

0

76

165

25 320359.5370383303 53

688

8

122

36

7971

62.5

642

38

275 275

850

836

55

589

4838

��

842

853 14468

8

144 230

691

36 28

4928

213

16

5631

428

031

0

688

8

71

25 320

370

383

359.5

303 53

152

109

36

642

38

62.5

275 275

55

850836

589

48

38

VD4/P (1)TN 7416Ur 12 kVIr 1600 A

2000 AIsc 20 kA

25 kA31,5 kA

VD4/P (1)TN 7416Ur 17,5 kVIr 1600 A

2000 AIsc 20 kA

25 kA31,5 kA

VD4/PTN 7417Ur 17,5 kVIr 2500 AIsc 20 kA

25 kA31,5 kA

(1) For UniGear typeZS1 only.

40


1250 AIsc 16 kA

20 kA25 kA

VD4/P (1)TN 7414Ur 24 kVIr 630 A

1250 AIsc 16 kA

20 kA25 kA

��

� ��

�

477

577

0

653 13.5

44 232636

2836

49 28

213

16

56 5631 31

210 210

650636

55

747

4838

432

531

0

20119 23

77035

802

25 320370383

458303 53

71

198

72

36

3879

90.5

3579

98

1250A630A

��

��

�

842

144 232

775

477

0

853 14

2836

49 28

213

16

5631

275 275

836

850

55

747

48

38

432

531

0

25 320

370

383

303 53

802

20119 23

198

71

36

35 35

790

38

91 79

7998

630A 1250A

Withdrawable circuit-breakers for UniGear type ZS1 and UniSafe switchgears

OVERALL DIMENSIONS

(1) For UniGear typeZS1 only.

41


2000 A2500 A (2)

Isc 16 kA20 kA25 kA

��

842

481

0

853 14

144 232

817

36 28

49 30

18

233

1656

31

71

434

531

0

834

20 23

25 320370383

790

303 53

198

72

7913

2

38

275 275

850

836

55

737

48

38

1600A - 2000A 2500A

4

(2) For UniGear typeZS1 only.Rated normalcurrent of 2300 A isguaranteed withnatural ventilation.Rated normalcurrent of 2500 A isguaranteed withforced ventilation.

43

5

Application diagrams 44

Represented operational state 46

Caption 46

Diagram figures description 47

Incompatibility 47

Notes 48

Graphical symbols for electrical diagrams 48


44

4018

06 -

11.

10.0

2


ApplicationdiagramsThe following diagram(No. 401806) showsthe circuits of the with-drawable circuit-break-ers up to 24 kV typeVD4/P, delivered to thecustomer by means ofconnector “-XB”.For fixed circuit-break-ers is available thespecific diagram No.401805.

In any case, to take intoaccount the evolutionof the product, it is al-ways useful to refer tothe circuit diagram pro-vided with each circuit-breaker.

46


-MS = Motor for the closing springs charging(see note C)

-BB1..2-3 = Circuit-breaker auxiliary contacts

-BS1..2 = Limit switches of the spring-chargingmotor

-BD = Position contact of the enclosure door

-BB4 = Passing auxiliary make contactclosing momentarily when c.breakeropens.

-BT1 = Contacts signalling circuit-breaker inthe connected position (see note E)

-BT2 = Contacts signalling circuit-breaker inthe removed position (see note E)

-BT3 = Circuit-breaker position contact. It isopen during the travel of the breaker.

-SC = Pushbutton or contact for the circuit-breaker closing

-SO = Pushbutton or contact for the circuit-breaker opening

-XB = Connector for the circuit-breakercircuits

Represented operational stateThe diagram indicates the following conditions:– circuit-breaker off and connected– circuits de-energized– closing springs discharged.

Caption= Reference number of diagram figure

* = See note indicated by the letter

A1 = Accessories of circuit-breaker operat-ing mechanism

A2 = Circuit-breaker accessories (externalto the operating mechanism)

A4 = Accessories of switchboard (indicativedevices and connections for controland signalling)

-BM = Device SOR Test unit for the supervi-sion of shunt opening release andshunt closing release coil continuity(see note D)

47

5

Fig. 7 = First shunt opening release circuit withpossibility of permanent supervision ofcoil continuity (see note D).

Fig. 8 = Locking magnet. If de-energized itprevents the c. breaker racking-in andracking-out mechanically (itis possible tolimit its consumption by connecting inseries a delaying pushbutton enablingthe operation).

Fig. 9 = Second shunt opening release circuitwith possibility of permanent supervisionof coil continuity (see note D).

Fig. 10 = Opening solenoid for microprocessorbased release external to the c. breaker.

Fig. 24 = Contact signalling undervoltageFig. 25 release energized (see note B). It is

possible to have open or close contact.

Fig. 30 = Passing auxiliary make contact closingmomentarily when circuit-breakeropens.

Fig. 31 = Circuit-breaker available auxiliaryFig. 32 contacts when are given the contact –

BT1, -BT2.

Fig. 33 = Circuit-breaker available auxiliaryFig. 34 contacts when are not given the contact

–BT1, -BT2.

Fig. 51 = Contacts signalling circuit-breaker in theconnected and isolated positionslocated on the circuit-breaker.

IncompatibilityThe combinations of circuits given in the figuresbelow are not possible on the same c. breaker:

3-4 31-32-33-34 33-34-51

24-25

-XB 2..9 = Connectors of accessories

-XB1 = Switchboard terminal board (mountedexternally to the circuit-breakerbreaker)

-RL1 = Locking magnet. If de-energized itprevents the circuit-breaker closingmechanically ( it is possible to limit itconsumption by connecting in series adelaying pushbutton enabling theoperation)

-RL2 = Locking magnet. If de-energized itprevents the circuit-breaker racking-inand racking-out mechanically (it ispossible to limit its consumption byconnecting in series a delayingpushbutton enabling the operation)

-MC = Shunt closing release (see note D)

-MO1 = First shunt opening release (see noteD)

-MO2 = Second shunt opening release (seenote D)

-MO3 = Opening solenoid for release externalto the circuit-breaker

-MU = Undervoltage release (see note B)

Diagram figures decriptionFig. 1 = Spring charging-motor circuit with

contact signalling closing springcharged (see note C).

Fig. 2 = Shunt closing release (antipumping isachieved m echanically).

Fig. 3 = Locking magnet. If de-energized itprevents the circuit-breaker closingmechanically (this fig. must be givenwhen are request –BT1, -BT2). (it ispossible to limit its consumption byconnecting in series a delayingpushbutton enabling the operation)

Fig. 4 = Locking magnet.If de-energized itprevents the circuit-breaker closingmechanically (this fig. must be givenwhen are not request –BT1, -BT2 and isgiven –BT1 ). (It is possible to limit itsconsumption by connecting in series adelaying pushbutton enabling theoperation)

Fig. 5 = Instantaneous undervoltage release(see note B)

48

5

M


Graphical symbols for electrical diagrams (IEC 60617 Standards)

Thermal effect

Electromagneticeffect

Delay

Pushbuttoncontrol

Operated by key

Earth (generalsymbol)

Mass, frame

Conductors inshielded cable (twoconductors shown)

Connections ofconductors

Terminal or clamp

Socket and plug(female and male)

Resistor (generalsymbol)

Capacitor (generalsymbol)

Motor (generalsymbol))

Rectifier with twohalf-waves (bridge)

Make contact

Break contact

Change-overbreak beforemake contact

Passing make contactclosing momentarilyduring release

Closing positioncontact (limitswitch)

Opening positioncontact (limitswitch)

Power circuit-breaker withautomatic opening

Control coil(general symbol)

Lamp (generalsymbol)

NotesA) The circuit-breaker is delivered complete with

the accessories listed in the ABB orderacknowledgement only. To draw up the orderexamine the apparatus catalogue.

B) The undervoltage release is available in theversion suitable for circuit-breaker supply sidefeeding or for feeding from an independentsource. Circuit-breaker may be closed only ifthe undervoltage release is energized (lock onclosing is achieved mechanically). In case ofthe same voltage supply for closing andundervoltage releases and if it is required thecircuit-breaker automatic closing when theauxiliary voltage supply restores, it is neces-sary to delay the energization of the closingrelease by 50 ms after the undervoltagerelease acceptance. This can be achievedthrough a circuit external to the breakerincluding a permanent closing contact, contactgiven in fig. 24 and a time-delaying relay.

C) Check the power supply available on theauxiliary circuit to verify if it is adequate to startseveral closing spring-charging motorssimultaneously. To prevent excessive con-sumption the closing springs must be chargedmanually before energizing the auxiliarycircuit.

D) The circuit for the supervision of shunt openingand closing release coil continuity shall beused for this function only. Is possible to usethe SOR Test Unit device for to check the coilcontinuity.

E) Contacts signalling circuit-breaker in theconnected and isolated positions (-BT1 and –BT2) given in fig. 51 are located on the circuit-breaker (moving part) and are available atrequest.

F) Fig. 3 is given when are requested –BT1 and –BT2 , fig. 4 when aren’t requested –BT1 and –BT2 (in this case –BT3 is obligatory) .

G) When fig.10 is requested contact –BB3 31-32given in fig. 32-34 is not available. When fig. 30is requested contact –BB3 53-54 given in fig.32-34 is not available.

ABB Trasmissione & Distribuzione S.p.A.Unità Operativa Sace T.M.S.Via Friuli, 4I-24044 DalmineTel: +39 035 395111Fax: +39 035 395874E-mail: [email protected]://www.abb.com

ABB Calor Emag Mittelspannung GmbHOberhausener Strasse 33 Petzower Strasse 8D-40472 Ratingen D-14542 GlindowPhone: +49(0)2102/12-1230, Fax: +49(0)2102/12-1916E-mail: [email protected]:http://www.abb.de/calor

The

dat

a an

d ill

ustr

atio

ns a

re n

ot b

indi

ng.

We

rese

rve

the

right

to

mak

ech

ange

s in

the

cou

rse

of t

echn

ical

dev

elop

men

t of

the

pro

duct

.

1VC

P00

0001

–

Rev

. –,

en

– T

echn

ical

cat

alog

ue –

200

2.12

(V

D4

- 31

kA)

ca vd4 01-4abozza - abb group...interrupting principle of abb interrupters in a vacuum interrupter,...

Documents