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零序电流III段保护动作时限的整定原则是

单选题
2021-09-01 20:45
A、从负荷侧算起逐级增加一个 时间级差
B、从负荷侧降压变压器的高压侧算起逐级增加一个 时间级差
C、与相邻线路的零序I段保护相配合
D、与相邻线路的零序Ⅱ段保护相配合
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正确答案
B

试题解析

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零序电流III段保护动作时限的整定原则是
过载保护宜采用带瞬动元件的反时限过电流继电器,其反时限特性曲线应为电动机保护型,瞬动电流不宜小于反时限起动电流的()。
微机差动保护中电流互感器对于微机电流保护装置可选用()。
常规零序电流保护主要由零序电流或电压滤过器、电流继电器和()三部分组成。
零序电流保护由零序电流滤过器、电流继电器、()组成。
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
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Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
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翻译:With Average or With Particular Average(WA or WPA)()
()shall be liable for loss of and damage to the Vessel and/or goods arising or resulting from inaccuracies in stating the description,quantity,weight,measurement or contents.
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