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鞍钢齐大山矿共有八台ioa吨电动轮汽车,在生产中发挥着重要作用,但经常发生单台电动机运行故障,严重地影响出车率。为此该矿汽运车间进行技术攻关,研制成功了108吨电动轮汽车单机运行保护装置。该装置是由一个差流直流互感器和一个保护电路组成的。当两台牵引电动机正常运行时,差流互感器无输出信号,保护电路不动作也不发出信号;当发生单台电动机运行时,差流互感器就有信号输出,使保护电路动作发出报警,发电机自动停止发电,断开牵引电路自动停车(动作电流调整范围
There are a total of eight ioa t electric wheel cars in Qidashan Mine of Anshan Iron and Steel Group, which play an important role in the production. However, single motor running failure frequently occurs, which seriously affects the exit rate. To this end, the mine car workshop for technical research, the successful development of a 108-ton electric car stand-alone operation and protection devices. The device consists of a differential current DC transformer and a protection circuit. When the two traction motors operate normally, the differential current transformer has no output signal, the protection circuit does not operate and does not send a signal; when a single motor runs, the differential current transformer has a signal output, so that the protection circuit action sends an alarm, The generator will automatically stop generating electricity and disconnect the traction circuit to stop automatically (the adjustment range of the operating current