High-voltage motor control switchgear construction site Description: switchgear frame welded by angle iron, sheet steel panels and partitions are. Primary and secondary devices are isolated from each device into the system. The front door, the operation panel and anti-error mechanism, side protective plates apart. Switchgear breaker compartment door front top right, bottom right is the cable compartment door. Middle partition the switch cabinet part two parts. On the part of a circuit breaker room, relay room, instrument panel, the lower part of the cable compartment. Isolation switch mounted on top of the cabinet, the middle partition and separate circuit breaker. Vacuum circuit breakers, disconnectors operating institutions in the breaker room; current transformer in the interval board; zero sequence transformer, etc. installed in the cable compartment, the circuit breaker operating mechanism mounted on the lower left front of the cabinet. Secondary instruments and devices installed on the dashboard and the relay room. Isolation switch on the upper and lower closing the door opening and closing procedures controlled lock, isolating switches off when timely, up and down the door does not open; when the door opened up and down, isolating switches not close. High-voltage electrical field control switchgear Technical data: Name Unit Data rated working voltage KV 3.6,7.2,12 rated operational current A 630,1250,2500,3150 Rated frequency HZ 50 rated short-circuit breaking current KA 16,20,31.5,40 rated Short circuit withstand current KA 16,20,31.5,40 Rated peak withstand current KA 40,50,80,100 rated power frequency withstand voltage KV 42 (1 min) Rated lightning impulse withstand voltage KV 75 rated short duration of S 4 high-voltage motor protection class IP2X site control switchgear maintenance and repair: 1, should be maintained between the distribution and the cabinet dry, clean and free of debris; 2, vacuum circuit breaker operation every six months or every 1,000 must be checked once, observe the amount of over-travel, there is a problem to adjust; devices Activity 3, the operating mechanism and other parts should be clean oil; 4, such as short circuit tripped breaker must be put into use the main contacts were detected after the performance checks; 5, switchgear operating parameters shall not exceed the specified value nameplate; 6, under normal circumstances, a vacuum circuit breaker timely glows blue or white light, such as yellow and light show slight vacuum leak, such as red light indicates that a serious vacuum leak prohibited.