Open-phase protection type residual current operated protector

The utility model discloses an open-phase protection type residual current operated protector, which comprises a residual current protected circuit. The residual current protected circuit is connected with a three-phase supply circuit. The open-phase protection type residual current operated protect...

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Bibliographische Detailangaben
Hauptverfasser:	TENG SHICHAO, DING JINFU, NGBO, LIU ZENGJUN, ZHANG HAICHANG, GUO CHANGSHAN, GAO FENG, WANG LIBING, SUI YONG, REN ZENGZHI, CHEN QINGHAI
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 discloses an open-phase protection type residual current operated protector, which comprises a residual current protected circuit. The residual current protected circuit is connected with a three-phase supply circuit. The open-phase protection type residual current operated protector is characterized in that the protector also comprises an intermediate relay and an AC contactor; one end of the coil of the intermediate relay is connected with the first phase of the three-phase supply circuit, and the other end is connected with the second phase of the three-phase supply circuit; both ends of the first control contact of the intermediate relay are respectively connected with the third phase of the three-phase supply circuit and one end of the coil of the AC contactor, and the other end of the coil of the AC contactor is connected with the second control contact of the intermediate relay, and then is connected with the second phase of the three-phase supply circuit; and the control contacts of