ABB UniSwitch Cooperated High-voltage Switchgear Electric Board

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, SF6- or vacuum circuitbreakers, 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. 

ABB UniSwitch cooperated High-voltage switchgear cabinet.

● Model: ABB UniSwitch

● Name: AC spaced metal enclosed switchgear

● Scheme options: load switch panel, load switch - fuse combined apparatus, Circuit Breaker panel, metering, cable cabinet;

● Rated voltage (Ue): 12kV;

● Power frequency withstand voltage (1min): 42kV;

● Rated impulse withstand voltage (Uimp): 75kV;

● Rated current (Ir): 630A (load switch panel), 125A (LS-Fuse combined);

● Short time withstand current (Icw) (4s): 25kA;

● Short circuit drop-out current: 31.5kA (combined panel, CB panel);

● Rated transfer current: 1700A (comb);

● Dimension: for LS and Comb 1635(1885)H *375(500)W *1000D (mm), for VCB 1885H *650W *1000D