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Stretching requirements and operating mechanism of Manual energy storage motor

Mar 19, 2019

When the Manual energy storage motor is used, it mainly refers to stretching or closing the spring to make it have corresponding potential energy. The energy storage spring is connected to the closing or opening mechanism. When closing or opening, the closing or opening spring quickly closes or separates the moving contact of the circuit breaker. The main purpose is to reduce the joint. The arc of the gate or the gate is present for the purpose of rapid arc extinguishing.

A manual energy storage motor is a switching device capable of closing, carrying and breaking current under normal circuit conditions and capable of closing, carrying and breaking current under abnormal circuit conditions within a prescribed time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage lines is relatively vague. Generally, 3kV or more is called high-voltage electrical equipment.


Manual energy storage motors generally consist of a contact system, an arc extinguishing system, an operating mechanism, a trip unit, and a casing. When short-circuited, the magnetic field generated by a large current (generally 10 to 12 times) overcomes the reaction force spring, the trip unit pulls the operating mechanism, and the switch instantaneously trips. When overloaded, the current becomes larger, the heat is increased, and the bimetal deforms to a certain extent to push the mechanism (the larger the current, the shorter the action time).