UniSafe (ABB Technology)

UniSafe (ABB Technology) is medium voltage metal-clad switchgear suitable for indoor installations.

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UniSafe (ABB Design) is medium voltage metal-clad switchgear suitable for indoor installations.
The switchgear is modular and is made up by placing standardized units side by side in a coordinated way.
Vacuum of SF6 circuit breaker technology is available.
Circuit breakers with the same rating are interchangeable irrespective of switching technology.
The unit compartments are metallically segregated from each other and the live parts are air insulated.
The switchgear functional units are guaranteed to be ARC-PROOF in compliance with IEC Standards app. AA, class A accessibility, criteria 1 to 5.
Installation requires very simple civil works. The switchgear can be wall-mounted. Access to the branch connections to connect the power cables takes place from the front of the switchgear.

 

Ambient conditions
The switchboard ratings are guaranteed under the following ambient conditions:

Minimum ambient temperature   -5 °C
Maximum ambient temperature   +40 °C
Maximum relative humidity   95%
Maximum altitude   1000 m

 

Electrical characteristics of the switchgear

Rated voltage kV 12 17.5 24
Rated insulation voltage kV 12 17.5 24
Power frequency withstand voltage kV 28 38 50
Lightning impulse withstand voltage kV 75 95 125
Rated frequency Hz 50-60 50-60 50-60
Main busbar rated current A 4000 4000 4000
Rated current of the branch connections A 630
1250
1600
2000
2500
3150
630
1250
1600
2000
2500
3150
630
1250
1600
2000

Rated short-time withstand current (1s) kA 50 50 25
Rated peak withstand current kA 125 125 63
Rated short-time withstand current (3s) kA 40 40 25
Rated peak withstand current kA 100 100 63
Internal arc withstand current (1s) kA 31.5 31.5 25
Rated current of the branch connections with forced ventilation A 3600
4000
3600
4000
2500

 

Degrees of protection
The degrees of protection of the switchgear comply with IEC Standards.
UniSafe switchgear are normally supplied with the following standard degrees of protection:

  • External housing: IP4X
  • Inside the units: IP2X.