Dragging reactive power compensation control cabinet for pumping unit

The utility model relates to a dragging reactive power compensation control cabinet for a pumping unit, which comprises a disconnecting switch, a fuse, a vacuum AC (alternating current) contactor, a comprehensive motor control protector, a power capacitor, a control transformer and a time relay. A m...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LU JIANQIANG, LI JUAN, LI YANHUI, LU JIANDONG, SHANG CHUNFANG, LI ZHONGHUA
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:The utility model relates to a dragging reactive power compensation control cabinet for a pumping unit, which comprises a disconnecting switch, a fuse, a vacuum AC (alternating current) contactor, a comprehensive motor control protector, a power capacitor, a control transformer and a time relay. A major loop and a control loop are formed and can be used for protecting the motor from over current, short circuit, default phase, malfunction and the like; and the time relay with a rapid resetting port is adopted for controlling switching capacitor, so that the problems of the frequent start-stop of the motor due to maintenance or operation of the pumping unit, the automatic power generation driven by the inertia of the pumping unit and the breakdown and damage caused by autoexcitation and overvoltage of the capacitor can be solved.