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Prevention and Treatment of the Control Actuating Mechanism Maulfunction of the Combined Switch for Mine
Pages: 77-78
Year: Issue:  6
Journal: Electric Switcher

Keyword:  本质安全组合开关PLC控制检测单元;
Abstract: 煤矿井下使用的矿用隔爆兼本质安全型多功能真空组合开关(以下简称组合开关),对主回路的控制大多数选用PLC控制继电器完成对主回路的保护.但由于继电器机械触点抖动或组合开关机械自身故障等原因,PLC虽发出了动作指令,而执行机构容易发生误动作,从而降低了系统的可靠性.简要论述了组合开关的工作原理、执行机构误动作的分析预防和措施.
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