Motor control and protection switch with overload thermal memory protection function
A protection function and protection switch technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of motor insulation damage, burnout, shortening the service life of the motor, etc., and achieve the effect of prolonging the service life and avoiding burnout
Inactive Publication Date: 2016-05-04
WUXI WING DUOPULI TECH CO LTD
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The invention discloses a motor control and protection switch with an overload thermal memory protection function. The motor control and protection switch comprises a motor, a three-phase switch, an overload thermal memory module, a first current transformer, a second current transformer and a third current transformer, wherein input ends of the first current transformer, the second current transformer and the third current transformer are connected with three phase lines of a three-phase power supply respectively; output ends of the first current transformer, the second current transformer and the third current transformer all are connected with three-phase terminals of the motor through the switch respectively; control ends of the first current transformer, the second current transformer and the third current transformer are connected with corresponding input ends of the overload thermal memory module; and the output end of the overload thermal memory module is connected with the three-phase switch by virtue of a wire. By the motor control and protection switch with the overload thermal memory protection function, the burnout condition that the motor is insulated and damaged due to a temperature rise can be avoided; the service lifetime of the motor is prolonged; and the motor control and protection switch can be used for preventing the motor from being damaged due to an over-high temperature.
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Technology Topic
Memory protectionPhase lead +7
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