Power transformer no-load automatic power-off device

Power transformer no-load automatic power-off device

The utility model discloses a power transformer no-load automatic power-off device. A power transformer is respectively connected with a circuit-breaker and a current mutual inductor; the current mutual inductor is communicated with sensing coil measurement current; a diode and filters are connected...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JIA YONGKANG, CHENG HUIXIANG, YUE SHIGANG, DOU LIJUAN, DOU XISHUN
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 a power transformer no-load automatic power-off device. A power transformer is respectively connected with a circuit-breaker and a current mutual inductor; the current mutual inductor is communicated with sensing coil measurement current; a diode and filters are connected in series between a sensing coil and a transistor amplifier; and a single crystal triode is connected in series between the transistor amplifier and a relay. The utility model has the benefits that security of a power grid is improved, and unnecessary power consumption is reduced.