The principle of leakage protector

The action principle of leakage protection switch is:on an iron core.there are two groups:one input and one output current winding winding current.when there is no leakage.input current and output current is equal.in the core flux vector and zero.would not be in the third winding induction electric potential.or on the third winding will be induced voltage to form.to drive actuator enlargement.switch trip.In front of the UPS and the leakage protection switch.in spite of UPS no generator stator leakage phenomenon.but as a result of every harmonic formed in core flux vector and due to the hysteresis effect of iron core is not zero.then appeared similar to the appearance of the leakage.the leakage protector the frequent trip.Leakage will electric motors 12 volt wire \ zero at the same time through a type O the circular as primary.

secondary use N turn output to promote a electromagnetic mechanism.electromagnetic agency action is tripping.The principle is normally on the wire and zero line current flows into equal outflow.so the induction of secondary voltage is zero.when the wire wholesalemotor.blogspot.com or there's a single line to ground zero line grounding resistance or short circuit.wire and zero line current on a voltage difference.through the secondary induction.when the difference in value to a certain drive single phase asynchronous motor off the main circuit of electromagnetic institutions.At present basically has two kinds of electronic and magnetic.