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UniGear ZS1 Fixed CBProduct Presentation

September, 2007

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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UniGear Fixed CB: another step completing UniGear ZS1 platform

UniGear ZS1 (classic and 550)

Double level

Double busbar

UniGear ZVCSlim contactor

UniGear ZS1 Fixed CB

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Designed and tested according to IEC 62271-200 and ENATS 41-36;

Metallic partitions between adjacent compartments (PM);

Loss of Service Continuity 2A;

Mechanical interlocks between the circuit breaker and the line disconnector;

Cable testing device interlocked with three position line disconnector;

Internal arc classified IAC AFLR 31,5kA according to the new IEC 62271-200 Annex A;

Exhausted gas evacuation by means of gas duct channel.

Highlights: Safe and Reliable

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Low maintenance switching device;

Fixed apparatus has the same accessories of the withdrawable one;

Access to all compartments from the front;

Simple replacement of main components;

Easy to be installed.

Highlights: Easy to maintain

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Reduced footprints (500mm wide, 1340mm deep panels);

Wall mounted application;

Directly connectable to any UniGear ZS1 solution;

Suitable for containerized substation.

Highlights: Compact and Space Saving Effective

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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(*) 1st step 630-1250A (delivery from March 2008), 2nd step 2000A (delivery from September 2008);

Rated voltageRated insulation voltageRated power frequency withstand voltageRated power frequency over the isolation distanceRated lightning impulse withstand voltageRated lightning impulse withstand voltage over the isolation distanceRated frequencyRated short-time withstand currentPeak currentInternal arc withstand current (in accordance to IEC 62271-200 App A)Branch connection rated current (*)Main busbar rated current

[kV][kV][kV][kV][kV][kV][Hz][kA 3s][kA][kA 1s][A][A]

Up toUp toUp toUp toUp to

121228327585

50-6031,5

8031,520004000

17,517,5

384595

11050-60

31,580

31,520004000

Electrical characteristics

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

Products

ENA Version (12kV, 2000A, 25kA):IAC AFL;

Depth: 1140mm;

Exaust gas relief from the rear;

Directly connectable to UniGear ZS1.

IEC Version (17,5kV, 2000A, 31,5kA):IAC AFLR;

Depth: 1320mm;

Exaust gas relief from the top through main gas duct channel (standard UniGear ZS1 solutions);

Directly connectable to UniGear ZS1.

Available solutions:

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Low voltagecompartment

Busbar compartment

Circuit Breaker

Toroidal / DIN typecurrent transformers

Three-position line disconnector

Feeder compartment

Section view:

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Inspection window

Three-position line disconnector operating mechanism

Voltage presenceindicator

Circuit Breakeroperating mechanism

Circuit Breakerposition (open – close)

Three-position line disconnector position (earthed – isolated –inserted)

Front Plate:

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Connected position

Components: Three-position line disconnector

Isolated position

Grounded position

Clear visible bladesindication from front window

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Ratings …17,5kV, …2000A, …31,5kA;

Mechanical operating mechanism located on the front plate;

Same accessories as per withdrawable version (Vmax/L) of VD4/P;

Clear front indication of open – close position and spring status;

Replacing of CB from the front of the panel in one hour and a half.

Components: Vmax/F fixed circuit breaker

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Optional Cable testing: Operating procedure

1) Put the line disconnector in earthed position.

1

2) Close the circuit breaker.

2

3) Unlock the cables test cover.

3

4) Open the test cover in safety condition.

4

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Ring core CT assembly:Standard up to 1250A.

For 2000A the CT rod will be available in the 2nd step.

DIN type CT assembly:Standard for 1600-2000A;

Optional up to 1250A.

Components: Current Transformers

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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Front side. Rear side.

Anchoring on concrete floor Base irons on concrete floor

Panel fixing to the floor

Two fixing point for each panel

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UniGear ZS1 Fixed CB – Product PresentationMedium Voltage

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