Voltage limiting type overvoltage protection assembly with recoverable electromagnetic drive tripping mechanism
The invention discloses a voltage limiting type overvoltage protection assembly with a recoverable electromagnetic drive tripping mechanism, which is composed of a voltage limiting type overvoltage protector and an electromagnetic drive tripping mechanism, in a normal state, a normally closed contac...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a voltage limiting type overvoltage protection assembly with a recoverable electromagnetic drive tripping mechanism, which is composed of a voltage limiting type overvoltage protector and an electromagnetic drive tripping mechanism, in a normal state, a normally closed contact of the electromagnetic drive tripping mechanism is in a closed state, and a normally closed contact of the electromagnetic drive tripping mechanism is in an open state. The normal working state of the voltage limiting type overvoltage protector and the protection state under normal intensity overvoltage are not influenced; when overvoltage occurs, pulse current flowing through the voltage limiting type piezoresistor induces current in the direction opposite to that in a spiral conductor coil of the lower electromagnetic driving disc on an upper metal disc of the electromagnetic driving tripping mechanism, so that the upper metal disc of the lower electromagnetic driving mechanism induces electromagnetic repulsive |
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