Motor Control Center
Auxiliary motor control center is mainly for the motor, high-power electric valve, on-site instrument power distribution, automatic control system. Each drawer type control unit has voltage meter & current meter, and control switches for measuring switching.
For low-power equipment control, the drawer type control unit is in half space, assembled with breaker, contactor, thermal relay, start/stop button, local/remote switch, etc., such as oil-gas exhauster, turning gear, shaft seal extraction fan. For high-power equipment control, it is a whole the drawer type control unit, assembled with breaker, contactor, thermal relay, start/stop button, local/remote switch, additional current transformer& transmitter for DCS remote display, such as condensate pump, AC lube oil pump, water jet extractor. Auxiliary motor control center provides the DCS system with independent control circuit of power supply, but need power inputs from UPS system.