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The Spring operating mechanism with motor start the circuit to connect the contacts of the stroke switch

Apr 23, 2019

The Spring operating mechanism with motor is currently the most commonly used. The closing and closing of the brakes relies on the spring to provide energy. The tripping and closing coil only provides energy to pull out the positioning pin of the spring, so the tripping current is generally not large. The spring energy storage uses a spring operating mechanism to compress the spring with a motor. For the bounce, the closing busbar mainly supplies power to the energy storage motor, and the current is not large, so the difference between the mother and the mother is not too big. Protection is in line with it, and there is generally no special need to pay attention.


The closing spring and the trip spring are independent. The energy storage generally only stores energy for the closing spring, and the trip spring generally relies on the closing action of the circuit breaker to store energy. In the closing circuit, there is a switch energy storage contact in series, that is to say, the switch cannot be closed if the switch is not stored. However, there is no switch in the trip circuit that has a switch and no energy storage contacts. So even if the switch does not store energy, it can be jumped off.


When the circuit breaker is disconnected, the trip spring has not yet stored energy, and the closing spring has stored energy. When the switch is closed, the closing spring releases the energy, and the closing spring simultaneously stores the energy to the opening spring. To ensure that the switch can be opened when it is closed. When the closing spring releases the energy, the spring operating mechanism starts to store energy to the closing spring by the motor.


This also means that when the hand is combined with the fault, the switch can immediately jump off, but this kind of jump cannot be re-closed immediately after the jump, because the switch has not stored energy yet, and the power can be sent again after the end of the energy storage. If the switch is originally closed, the closing spring and the opening spring of the switch are already stored.