Bergbau und eigensichere Ex-Vac

Purpose QJZ-400(315,200)/1140(660)explosion-proof and intrinsically safe vaccum electromagnetic starter is suitable to the mine well withmixed gascontaining methane. In the power supply system of 50 Hz AC, rated voltage of 1140 V and below and the triphase neutralnot grounding, the product can control triphase squirrel cage asynchronous motor. Technical features 1) With the indication of closing, opening of starter ,on-line status and kinds of faults; 2) Rated current can be adjusted by code-dialing on motor synthetical protector ; 3) With the protective functions of short circuit, over load, loose phase, current leakage interlock; 4) With function of interlinked control. Technical Data Rated power(V) 1140,660 Rated current(A) 400,315,200 Work frequency(Hz) 50 On-line time delay (s) 0-10 adjustable