Enclosed knife switch alarm device is drawn in leak protection of oil well switch board

The utility model provides an enclosed knife switch alarm device is drawn in leak protection of oil well switch board, this enclosed knife switch alarm device is drawn in leak protection of oil well switch board includes contact AC relay, this contact AC relay's coil is connected with the third...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FAN JUN, LI WEI, LUO LILI, ZHANG ZONGYUAN, ZHANG CHUNLAI, LUO QIN, XIN SIYING, WANG CHUNLING, YANG YANJUN, YU FENGHAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION
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Beschreibung
Zusammenfassung:	The utility model provides an enclosed knife switch alarm device is drawn in leak protection of oil well switch board, this enclosed knife switch alarm device is drawn in leak protection of oil well switch board includes contact AC relay, this contact AC relay's coil is connected with the third phase line power of oil well switch board, and be connected with the third phase line incoming wire terminal of the motor protection ware of oil well switch board, this contact AC relay's normally open contact is connected with the first phase line power of oil well switch board, and be connected with the first phase line incoming wire terminal of this motor protection ware, the second phase line incoming wire terminal of this motor protection ware connects in the second phase line power of oil wellswitch board. This enclosed knife switch alarm device is drawn in leak protection of oil well switch board simple structure, simple to operate, switch board protect function imperfection has effectively been solved to the lo