ABB
1
Uniswitch Operation and
Maintenance Manual
UNIS14GB 05-02
1 Summary
1.1 General
Product definition The Uniswitch is an air-insulated, metal-enclosed, three-phase, medium
voltage (MV) switchgear and controlgear. The system includes several
standardised cubicles which can be delivered either as a complete
switchgear and controlgear or as individual cubicles.
Assembly structure The Uniswitch switchgear and controlgear system uses standard
components such as switch-disconnectors, SF
6
- or vacuum circuit-
breakers, earthing switches, instrument transformers and secondary
apparatus. The units are designed as fixed or withdrawable modules
and are fitted with a single busbar system. The withdrawable parts are
always with circuit-breakers.
By combining the standard components, a system which offers a wide
range of different device arrangements can be made.
Applications The Uniswitch switchgear and controlgear system is designed for use in
general and industrial applications in 3.6 – 24 kV electrical distribution
networks.
References Details of the technical design and configuration of individual
switchgears, such as the technical data, detailed equipment lists for the
individual cubicles and comprehensive circuit documentation etc., can
be found in the relevant order documents.
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