Portable current transformer polarity calibration instrument

The utility model relates to a portable current transformer polarity calibration instrument which comprises a square shell and a panel. A battery and a slide-wire rheostat are arranged in the shell, an analog ammeter, a switch, an adjusting knob, a selective switch and connecting terminals are arran...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHAO WENHAO, JIA QINGFENG, CHEN ZHIBIN, TIAN YUKUN, RUI JIANXUN, ZHAO YONG, NING JIANGWEI, GUO XUGUANG, LI JIANG, YU HUILONG, HUO CHUNMIN, BI DONGLEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The utility model relates to a portable current transformer polarity calibration instrument which comprises a square shell and a panel. A battery and a slide-wire rheostat are arranged in the shell, an analog ammeter, a switch, an adjusting knob, a selective switch and connecting terminals are arranged on the panel, and the connecting terminals are connected with four leading-out terminals of a current transformer respectively. The portable current transformer polarity calibration instrument is simple in structure, convenient to carry, easy in connection, fine in functional quality and applicable to the mounting and maintaining process of relay protection, the working efficiency of workers can be greatly improved, and the workload of the workers is reduced.