What are the energy storage methods of circuit breakers? What are the principles and advantages and disadvantages of spring energy storage and hydraulic energy storage?

Circuit breaker energy storage methods include spring, spring hydraulic, hydraulic and pneumatic;

Spring: the closing spring is stored by the motor, and the opening spring is stored after the closing is released, and then the closing spring is stored by the motor, so that when the circuit breaker is normally closed, the opening and closing spring is in the storage position to meet the opening and closing operation;

Advantages: there are only two States of energy storage and no energy storage, and there will be no various locking situations;

Disadvantages: all mechanical parts are scattered and kept in a spring state, which is prone to failure; At the same time, the closing time is longer;

Hydraulic spring: the oil pump stores energy for closing, and then stores the opening spring after closing is released, and then the oil pump motor stores energy for closing, so that the opening and closing of the circuit breaker is in the energy storage position under the normal state of closing, which meets the opening and closing operation;

Advantages: short closing time and high operating power;

Disadvantages: it is easy to leak oil and needs to be suppressed frequently;