After closing the circuit breaker the energy storage motor keeps working

How to close the circuit breaker of a micro motor?

If it is necessary to close the circuit breaker with the electric operation mechanism, press the closing button, the power supply circuit of the motor will be connected, and the motor rotates. After completing the energy storage or closing of the mechanism, the power supply circuit of the micro motor should be disconnected by the limit switch.

How does a breaker close?

The force is transmitted from the operating mechanism to the pole assemblies via operating levers. To close the breaker, the closing spring can be unlatched either mechanically by means of the local “ON” pushbutton or electrically by remote control. The closing spring charges the opening or contact pressure springs as the breaker closes.

What is the function of a charging motor?

The function of the charging motor (M) is to compress the main closing spring which is the mechanical stored energy mechanism. The energy required to trip or open the circuit breaker is provided by the tripping spring, while the energy required to close the circuit breaker is supplied by the closing spring.

When a circuit breaker is energized?

The close coil (CC) is energized if the 52/b contact, LS contact, LCS contact, and Y contact are all closed. The 52/b contact automatically opens when the breaker closes, cutting off power to the close coil. Figure 3 shows the typical trip control circuit of a circuit breaker.

How does a motor cutoff switch work?

When the main closing spring has been fully charged and the stored energy mechanism is prepared for a closing operation, the motor cutoff switch (LS) creates an electrical break in the control circuit supplying the charging motor (M).

How does a circuit breaker work?

The control circuit’s logic is served by the anti-pump relay (Y), which prevents a continuous electrical close signal from causing the circuit breaker to repeatedly close after receiving a trip signal. Solenoids are used to power the breaker’s electrical operation.