air-insulated switchgear unigear type zs1 - atec · pdf fileair-insulated switchgear unigear...

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Air-insulatedswitchgear UniGear type ZS1

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Air-insulated switchgear UniGear type ZS1©

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Air-insulated switchgearUniGear type ZS1

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Rated voltage kV 12 17.5 24

Rated currentof the main busbars A ...4000 ... 4000 ... 2500

Rated currentof Circuit breaker panel A ...4000 ... 4000 ... 2500

Rated short-timewithstand current kA ...50 ...40 ...25

Peak withstandcurrent kA 125 100 63

Width mm 650/800/1000 650/800/1000 800/1000Height mm 2200 2200 2200Height with gas duct mm 2700 2700 2800Dept mm 1300/1350 1300/1350 1500

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Basic structure

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4Compartments:1 Circuit-breaker2 Busbar3 Cable4 Auxiliary

Main components:

A Busbar system

B Bushings

C Current Transformer or Combi Sensor

D Voltage Transformer

E Earthing switch

F Cable connectors

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Designed for:Flexible applications

Complete range of apparatus: VD4, VM1, HD4, V-Contact

Operation and safetyFront, rear and sides arc resistanceClosed doors rackingMetallic shutters, connected to earthMetallic segregation of all the compartments

Maintenance simplicityFront service operationsFront access to all components

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Apparatus –Vacuum circuit-breakers

VD4 vacuum circuit-breakers with spring actuator

Circuit-breakers for all fields of power distribution applications.

Even distribution of the melting points over the whole surface of the contacts means the best performances can be obtained at all current values.

The epoxy resin poles protect theinterrupters from any physical andelectrical damage.

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Apparatus –Vacuum circuit-breakers

VM1 vacuum circuit-breakers with magnetic actuator

The vacuum circuit-breakers can also be equipped with the magnetic actuator operating mechanism.

The switching, latching and releasefunctions are integrated in themagnetic actuator.

All the functions (release, operating, motion, energy storage and check the functional reliability) are operated by the integrated electronic controller.

Equipped with multi-voltage power-supply.

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Apparatus –SF6 circuit-breakers

HD4 SF6 circuit-breakersCircuit-breakers for all fields of power distribution applications.

Pole in SF6 with autopuffer breaking system.

The combination of compression and self-blasttechniques means the best performances can be obtained at all current values.

Withstanding of the insulation voltage and breaking capacity up to 30% of the rated breaking capacity even atzero relative pressure.

The poles can be fitted with gas pressure control device.

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Apparatus –Vacuum contactors

V-Contact vacuum contactor

Optimal solution for motor starters,power-factor correction capacitor banks and transformer feeders up to 12 kV.

Fitted with medium voltage fusesaccording to DIN and BS Standards.

Possibility of integrating a single-phasevoltage transformer to supply thecontrol circuits.

Availability of operating mechanism with electrical or mechanical latching.

Equipped with multi-voltagepower-supply.

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Medium voltagetechnology


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Bushings

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Main characteristicsSingle phase type

Compact and robust solution

Self-supporting branches fixing base

1 Branch connector slot2 Fixed contacts3 Circuit-breaker slot

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ShuttersCB compartment VTs compartment

Main characteristics

Metallic shutters

Connected to earth

Automatically operated by the truck

Optional padlocksopen open

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Cables connectionsMain characteristics

Conventional AIS cable connectors

Up to 6 cables per phase

Single or three cores cables

Up to 630 mm2 conductorcross section

Cable area easily accessible from the front

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Both conventional transformers andsensors technologiesThe use of sensors gives the following advantages

High accuracy and linearity

Large dynamic range

Low temperature coefficient

No saturation

No iron-resonance

Compact and cost effective solution

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Current transformers (...2500A)

Dimensions according to DIN 42600 standardNarrow Type.Electrical characteristics according to IEC 60044-1.One set per phase, Medium or Long size(up to 3 or 5 cores).

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Current transformers (3150...4000A)

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Ring-core Type.Electrical characteristics according to IEC 60044-1.One set per phase.

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Dimensions according to DIN 42600standard Narrow Type. Electrical characteristics accordingto IEC 60044-2.

Voltage transformers

TypeFixedWithdrawable with fuses

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Current and voltage sensors (...2500A)

Dimensions according to DIN 42600standard Narrow Type.Current sensors compliant with IEC 60044-8 / CDV.Voltage sensors compliantwith IEC 60044-7.

Main characteristics:In the combi-sensors both current and voltage sensors are integrated in the same compact cast resin part.Current sensor is based on a Rogowski coil.Voltage sensor is based on a resistive divider.Also a capacitive divider for voltage indication is included.

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Active arc protection system

Fast Recovery Device based on pressure sensorsfor internal arc detecting and quenching.

Main characteristics:Limit the duration of arcing to a maximum of 100 ms.

Minimize the damage caused by arcing.

Fault area selective control.

Pressure sensors trip directly CB.

Sensors mounted in the auxiliary compartment.

Pressure sensors testing under service conditions.

Pressure sensors

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Main featuresProtection

Measurement

Control

Signaling

Interlock

Automation

Communication

REF542 plus

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air-insulated switchgear unigear type zs1 - atec · pdf fileair-insulated switchgear unigear...

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