ZX1.2

Gas-insulated medium voltage switchgear

PowerITPowerIT

23664 DS ZX1.2_E.p65 26.09.2002, 11:52 Uhr1

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AdvantagesMaximum safety

• Partitioning of functional compartments

• Completely protected encapsulation againstaccess to hazardous part

• HV parts totally independent toenvironmental influences

• No effect on dielectric strengthby site altitude

Minimum space required

• Minimum switchgear dimensions due to SF6 insulation

• Savings in building areas up to 70% in comparisonwith conventional switchgear

Economy

• Maximum availability for the operator

• Maximum system service life as independent of the environment

• Minimum maintenance requirement means extreme savings in operating costs

• Longer life time than other switchgear types leads to potential savings in new investments

• Building area and volume savings reduce the general investment and operating costs

ZX1.2 Details at a glance.

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Metalclad and gas-tight• SF6 gas-insulated

• Busbar compartment as sealedpressure system

• Circuit-breaker compartment as sealedpressure system

• 12 to 36 kV

• up to 2000 A* and 31.5 kA

Design• Single busbar version

• Laser welded stainless steel enclosures

• Modular design

• Panels coupled by plug-in busbar connectors withoutSF6 gas work

• Pressure relief selectable per panel orpressure relief duct

• High cable termination point of 1250 mm

• Inner cone cable plug systemwith size 2 and 3

• Bus duct connection solidly insulated

* Higher values on request

23664 DS ZX1.2_E.p65 26.09.2002, 11:52 Uhr2

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ZX1.2In service wherever electrical energy is

generated,distributed andutilized.

3-position switch• Motor-operated rod-type switch

with three functions

– Connecting, isolating and earthing– Disconnected position at center– Limit positions:

Disconnector ON or earthing switch ON

• Currentless preparation of any connection:Switching is performed exclusively by thecircuit-breaker

• Limited active switch componentsin the gas compartment

• Operating mechanism outsidethe gas compartment

– Motor operated insulating spindeldrives the moveable contact

– Emergency manual operation optionalwith mechanical interlocking

– Position detection by sensors orauxiliary switches

– Mechanical position indicators3

Circuit-breaker VD4 X• Horizontal arrangement of circuit-breaker poles

• Operating mechanism outside the gas compartment

• Poles and mechanism connected via gas-tightthrust bushing

• Additional earthing function in combinationwith 3-position switch

Advantages– Circuit-breaker of higher quality than an earthing

switch– Higher number of switching cycles onto faults– Causes no pollution of the SF6 during

switching operation

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ZX1.2 Conventional or with digital protection and control equipment

Control and operation via• Multifunctional protection and

control unit REF542 plus

• Conventional control solution

• Customised multifunctional device

Protection• REF542 plus covers all from overcurrent

protection to distance protection

• Independent protection devices

Protection againstmalfunction• With programmable logic

• Alternatively electromechanicalprotection

• Optional with mechanical interlockingbetween circuit-breaker and3-position switch

Monitoring• With modern proximity switches or auxiliary switches

• Monitoring of each gas compartment by density sensors

• Optional with fast tripping in case of internal arc

Status indications• Four pages each with eight freely programmable LEDs in

conjunction with status-dependent plain text messageson REF542 plus

• Alternatively display of messages on flag indication relaysand indication lamps

Current / voltage measuring with• Sensors within the gas compartment

• Current transformers within the gascompartment

• Ring type current transformers in air

• Voltage transformers

– Plugged-in in air– Protected against access– Disconnectable

CommunicationConnection to host automation systemsis facilitated, depending on the type ofprotection and control unit.

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ZX1. 2

DeliveryComplete panels

• Factory tested

• Individual panels as transport units

• With SF6 at rated filling pressure

• Suitable for handling by craneor fork lift truck

Installation• Easy and fast installation

• Suitable for room heights above 2.5 meters

• Erection on foundation frame or raised false floor

• Simple connection of panels via plug-in connection

• Cable termination compartments with plug-in technology

Commissioning• By trained skilled personnel

• Direct access to the conductorsthrough a separate test socket isavailable for current and voltagetests on site

– Without removing the cableconnection

– Without gas work

• Test socket can be used forcable tests or maintenanceearthing

Inspection and maintenance• No refill required under normal condition due

to sealed pressure system

• Gas compartments are maintenance freeunder normal conditions

• Inspection predominantly comprises visualinspection and functional testing

Experiences• ABB Calor Emag Mittelspannung GmbH has over

35 years of experience with gas-insulated switchgear.

• ZX panels have been positioned successfullyand reliable at the world market since 1995.

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ZX1.2 Technical data. IEC Standard ratings Special ratings

Rated voltage kV 12 24 36

Maximum operating voltage kV 12 24 36 40.5

Rated power frequency withstand voltage kV 28 1) 50 1) 70 85

Rated lightning impulse withstand voltage kV 75 125 170 185 1)

All voltage values apply for aninsulating gas pressure, absolute, 20 °C bar 2) 1.0 1.0 1.0 1.2

Rated frequency Hz 50/60 50/60 50/60 50/60

Rated busbars current A ...2000 12) ...2000 12) ...2000 12) ...2000 12)

Rated feeder current A ...2000 12) ...2000 12) ...2000 12) ...2000 12)

Rated peak withstand current kA ...80 ...80 ...80 ...80

Rated short-time current, 3s kA ...31.5 ...31.5 ...31.5 ...31.5

Rated short-circuit breaking currentof circuit-breaker kA ....31.5 ....31.5 3) ....31.5 3) ....31.5 3)

Rated short-circuit making currentof circuit-breaker kA 80 80 80 80

Rated operating sequence O-0.3 s-CO-3 min-CO 4)

Total break-time ms ca. 60 ca. 60 ca. 60 ca. 60

Make-time ms ca. 80 ca. 80 ca. 80 ca. 80

Insulating gas SF65) SF6

5) SF65) SF6

5)

Design pressure, absolute bar 1.47 1.47 1.47 1.47

Rated filling pressure, absolute, 20 °C bar 1.3 1.3 1.3 1.3

Minimum operating pressure, absolute, 20 °C bar 1.2 1.2 1.2 1.2

Rated data: Charging motor VA (W) 150 150 150 150 Closing coil VA (W) 250 250 250 250 Opening coil VA (W) 250 250 250 250 Auxiliary voltage V 60, 110, 220 DC 6)

Degree of protection (IEC 60529, DIN VDE 0470): High voltage live parts IP 65 IP 65 IP 65 IP 65 Low voltage compartment IP 4X 7) IP 4X 7) IP 4X 7) IP 4X 7)

Ambient temperature: Maximum value °C + 40 + 40 + 40 + 40 Maximum value of 24 h-mean °C + 35 + 35 + 35 + 35 Minimum value °C - 5 - 5 - 5 - 5

Altitude for erection above sea level 8) m ...1000 ...1000 ...1000 ...1000

Dimensions: Height mm 2100 9) 2100 9) 2100 9) 2100 9)

Depth mm 1300-1800 10) 1300-1800 10) 1300-1800 10) 1300-1800 10)

Width mm 600/800 11) 600/800 11) 600/800 11) 600/800 11)

Height of cable fixing mm 1250 1250 1250 1250

1) Higher values as per international standards on request2) 1 bar = 100 kPa3) 600 mm panel width until 25 kA rated short-circuit breaking current4) Other sequences on request5) Insulating gas: sulphur hexafluoride6) Other auxiliary voltages on request

7) Higher values on request8) Higher altitude on request9) Plus 200 mm for pressure relief

10) Depending on quantity of cables per phase11) Rated feeder current > 1250 A12) 2500 A on request

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With the ZX1.2, all the variants of single busbar systemscan be implemented.ZX1.2 reflects the wishes of customers worldwide, no matterwhether sensor systems or conventional instrumenttransformers are installed.ZX1.2 always provides the right solution.

ZX1.2 Implementing customers’ wishes.

Feeder C

23664 ZX1.2_E Einklapp.p65 1

ZX1.2Versatile and adaptable

CompactFlexibleUniversally usableExpandableEconomical

RiserFeeder Busbar meteringSectionalizerCable connection

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26.09.2002, 12:29 Uhr

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ser Busbar metering

1 Density sensor

2 Circuit-breaker operating mechanism

3 Multifunction Protection and Switchgear Control unit

REF542 plus

4 3-position switch operating mechanism

5 3-position switch

6 Busbar

7 Pressure relief disk

8 Pressure relief duct (optional)

9 Ring type current transformer

10 Cable plug

11 Cable socket

12 Measuring sockets for capacitive voltage indicator system

13 Test socket

14 Circuit-breaker

SF6 gas

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Outgoing feeder 1250 A

ABB

Feeder 2000 A ZX1.2 Bus secintegrat

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1 Plug-in voltage transformer

2 Disconnecting device for voltage

transformers

3 Density sensor

4 Circuit-breaker operating mechanism

5 Multifunction Protection and Switchgear

Control unit REF542 plus

6 Three position switch operating mechanism

7 Three position switch

8 Busbar

9 Pressure relief disk

1 Density sensor

2 Circuit-breaker opera

3 Multifunction Protect

REF542 plus

4 Three position switch

5 Three position switch

6 Busbar

7 Pressure relief disk

8 Pressure relief duct

9 Pressure relief flap

10 Pressure relief duct

11 Cable plug

12 Cable socket

13 Measuring sockets for capacitive voltage

indicator system

14 Test socket

15 Circuit-breaker

16 Combined current and voltage sensor

or current transformer

17 Plasma diverter

SF6 gas

23664 ZX1.2_E Einklapp.p65 2

ABB Power Distribution

ABB Calor Emag Mittelspannung Gm

Oberhausener Strasse 33 Petzow40472 Ratingen 14542 DEUTSCHLAND DEUTS

Phone: +49(0)21 02/12-12 30, Fax: +49E-Mail: calor.info@de.abb.comInternet: http://www.abb.de/calor

ZX1.2 Bus sectionalizer and bus riser also withintegrated metering

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1 Density sensor

2 Circuit-breaker operating mechanism

3 Multifunction Protection and Switchgear Control unit

REF542 plus

4 Three position switch operating mechanism

5 Three position switch

6 Busbar

7 Pressure relief disk

8 Pressure relief duct

9 Pressure relief flap

apacitive voltage

oltage sensor

10 Plug-in voltage transformer

11 Socket

12 Disconnecting device for

voltage transformers

13 Circuit-breaker

14 Combined current and voltage sensor

or current transformer

15 Plasma diverter

SF6 gas

26.09.2002, 12:29 Uhr

ABB Calor Emag Mittelspannung GmbH

Oberhausener Strasse 33 Petzower Strasse 840472 Ratingen 14542 GlindowDEUTSCHLAND DEUTSCHLAND

Phone: +49(0)21 02/12-12 30, Fax: +49(0)21 02/12-19 16E-Mail: calor.info@de.abb.comInternet: http://www.abb.de/calor

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