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UniMix air insulated medium voltage switchgear

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� Product Marketing

� Manuel Salvi

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Compliant with new IEC 62271-200(ex 60298) that classifies reliability and operating risks.

Classified by IEC 62271-200 as:metal-enclosedpartition metallic (compartments segregation) LSC2A

Loss of Continuity: Feeder Service: Compartment

Is compliant with IEC 60129 for indications.

UniMix Standards Compliance

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3UniMix characteristics

Maximum Flexibility up to 24kV

Interchangeable SF6/vacuum CBs

Sensors/DIN CT’s/Ring CT’s

Compact dimensions (375/500/750mm)

Wall standing

Bus bars CTs & VTs (W>375mm)

Full Int.Arc Proof 16kAx1s (0.5s for

W=375mm)

All earthed metal segregation

Welded tank

Short delivery time

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Maximum safety during maintenance and operations in the cable or fuse compartment even with bus bars energized.

Reduced risk of short circuit between phases or between the two insulators of the same phase

UniMix Characteristics

EARTHED metallic segregation between bus bar and feeder compartments

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Rated insulation voltage kV 12 17 24

Test Voltage (50-60 Hz/1 min) kV 28 38 50

Impulse withstand voltage kV 75 95 125

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

Rated main busbar current A 630/1250

Rated feeder current A 630/1250

Max. short-time current kA 25x1s 25x1s 25x1s

Max. making capacity kA 62.5x1s 62.5x1s 62.5x1s

SHS2 Gas absolute pressure (20 °C; SF6 350g) kPa 125

LBS motor kit Available

UniMix Characteristics

Electrical Data

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6UniMix Internal Arc Proof

Internal arc proof withstand current

500/750mm width units16kA for 1 second

20kA for 0.5 second

Tranne P1E e P1A

375mm width units12.5kA for 1 second

16kA for 0.5 second

“Light” version12.5kA for 1 second

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Arc-proof testaccording to IEC 298 standards, appendix AA, class A, criteria 1 to 5 / IEC 62271-200

Criteria:1 Correctly secured doors, covers do not open.2 Parts which may cause a hazard do not fly off.3 No holes in the freely accessible external parts

of the enclosure.4 Horizontally and vertically arranged indicators

do not ignite.5 Earthing connections are still effective.

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UniMix Internal Arc Proof

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8UniMix

SHS2 type Switch disconnector

SF6 insulated

Stainless steel enclosure

3 position: LINE – OPEN – EARTH

Making capacity Earthing Switch

Separate slots for SD and ES

IEC 60129 for indications

Motor operated mechanism on request

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SHS2 basic structure

Legend:1. Switching shaft - 2. Isolators - 3. Enclosure - 4. Fixed contacts - 5. Moving Contacts6. Earthing contacts - 7. Operating mechanism - 8. Rupture disk

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UniMix

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10UniMix

SHS2: Three positions SD

OPENEARTH

LINE

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SHS2: Accessories

Caption:1 Line key locks2 Earth key locks3 Auxiliary contacts (2+2) 4 Opening coil5 Voltage indicators

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UniMix

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12UniMix

Circuit breakers 230mm pole distance

On board PR521 relay and sensors

SF6 pressure switch on request

Motorised on request

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13UniMix

Protection & Control

REF542 Plus

PR521 & dedicated current sensors on

board of CB

PR512 & ring core type CTs

DIN 43625 Fuses

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14UniMix

Instrument transformers

Current and voltage transformers

Ring core type

DIN 42600DIN 42600

Combisensor

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15UniMix

New Units: P1/A

Rated insulation voltage kV 24

Test Voltage (50-60 Hz/1 min) kV 50

Impulse withstand voltage kV 125

Rated frequency Hz 50/60

Rated main busbar current A 630/1250

Rated feeder current A 400/630

Max. short-time current kA 16x1s

Max. making capacity kA 62.5x1s (ES excluded)

Maintenance of CB (opening of door) keeping MV cables enegised

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16UniMix

New Units: P1/E

Rated insulation voltage kV 24

Test Voltage (50-60 Hz/1 min) kV 50

Impulse withstand voltage kV 125

Rated frequency Hz 50/60

Rated main busbar current A 630/1250

Rated feeder current A 630/1250

Max. short-time current kA 25x1s

Max. making capacity kA 62.5x1s

Internal arc proof kA 16x1S

Withdrawable Circuit Breaker with front operating mechanism

Feeder current up to 1250A

DIN CTs and DIN VTs can be both housed in the feeder unit

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17UniMix

New Units: P1/E

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Unit P3 – Switch disconnector

UniMix

Opening coil

Motor operated mechanism

Bus Tie Unit

Available for 500 mm width units:

- DIN CTs (2 or 3)

- DIN VTs

- Busbars DIN CTs

- Busbars DIN VTs

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Unit P2 – Fused Switch disconnector

UniMix

Opening coil

Bus Tie Unit

Available for 500 mm width units:

- Busbars DIN CTs

- Busbars DIN VTs

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Unit P1/F – Circuit breaker

UniMix

DIN CTs (2 or 3)

DIN VTs

On board current sensors for PR521

Bus Tie unit

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Unit ASR – Switched Incoming

UniMix

Bus Tie unit

Available for 500 mm width units:

- DIN CTs (2 or 3)

- DIN VTs

- Busbars DIN CTs

- Busbars DIN VTs

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Unit A – Direct Incoming

UniMix

Available for 500 mm width units:

- DIN CTs (2 or 3)

- DIN VTs

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Unit R - Riser

UniMix

Available for 500mm width units:

- DIN CTs (2 or 3)

- DIN VTs

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Unit Rac – Direct cable Incoming

UniMix

Available for 500mm width units:

- DIN CTs (2 or 3)

- DIN VTs

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Unit M – Measure

UniMix

Busbars DIN CTs

DIN VTs

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26Secondary Distribution typical applications

Manufacturing industry

Secondary substations

Shopping centres

Airports

Undergrounds

Windmills

Production = 9’000 units/year

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Workshop : sqm. 5300Offices : sqm. 400

LoretoAprutino

Unimix factory and Production process

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28UniMix on inside.abb.com

General information

Documents download

Service and supportTraining & Technical Support

Audit & Consulting

Retrofit & Upgrades

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