Coil protection circuit of medium-voltage cabinet
The utility model provides a medium voltage cabinet coil protection circuit, which comprises a power supply, a control circuit, a safety circuit, an alarm circuit and a standby circuit, and is characterized in that the control circuit is connected between a first electrode and a second electrode and...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model provides a medium voltage cabinet coil protection circuit, which comprises a power supply, a control circuit, a safety circuit, an alarm circuit and a standby circuit, and is characterized in that the control circuit is connected between a first electrode and a second electrode and comprises a first closing and opening brake, a closing feedback switch, a time relay, a comprehensive protection closing unit and a vacuum circuit breaker; the safety circuit is connected to the control circuit, the safety circuit comprises a time relay, the alarm circuit is connected with the first electrode and the second electrode, the alarm circuit comprises a time relay and an alarm module, the time relay is a normally open switch on the alarm circuit, and the standby circuit comprises a standby switch-on. One end of the standby closing part is connected with the first electrode, and the other end of the standby closing part is located between the comprehensive protection closing unit and the vacuum circuit b |
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