Specified current in emergency load switches

Bourkas P.D.; Kayafas E.A.

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Specified current in emergency load switches

机译：紧急负载开关中的指定电流

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The authors deal with the problems which arise in the contacts of power switches at LV distribution systems, especially in cases where emergency loads cannot allow programmed power interrupts through the central distribution panels to perform maintenance. Dust and other local impurities accumulated on the metal surfaces deteriorate the contacts with the time and the switch's ability to supply its specified current. An explanation of the contact deterioration mechanism is attempted, and a solution of the maintenance problem is suggested: a design of a bypass supply system, including isolators and automatic switches. The proposed system was tested in actual industrial conditions, namely in hospitals, where maintenance is an awkward procedure, and proved to perform adequately.

机译：作者解决了在低压配电系统的电源开关的触点中出现的问题，特别是在紧急负载无法允许通过中央配电盘进行编程的电源中断来进行维护的情况下。随着时间的流逝和开关提供规定电流的能力，金属表面上积聚的灰尘和其他局部杂质会破坏触点。试图对接触劣化机理进行解释，并提出维护问题的解决方案：旁路电源系统的设计，包括隔离器和自动开关。所提议的系统在实际的工业条件下进行了测试，即在维护难度大的医院中进行了测试，并证明其性能良好。

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《IEE proceedings. Part C》 |1988年第4期|P.330-333|共4页
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Bourkas P.D.; Kayafas E.A.;
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正文语种 eng
中图分类输配电技术;
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Specified current in emergency load switches

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