DPC-4-800 VCB Withdrawable Truck Motor Trolley For 24kV Vacuum Circuit Breaker

The circuit breaker chassis vehicle is mainly used to carry circuit breakers, transformers and other components in the withdrawable switchgear, push them in and out, and serve as an auxiliary operation for connecting components with busbars. When the chassis vehicle cooperates with the internal mechanism of the circuit breaker and other interlocking mechanisms of the central cabinet, it can meet the “five-prevention” interlocking requirements in GB3906. The specific functions are as follows:
1. The circuit breaker can only be closed when the trolley is in the test/isolation or working position, and the trolley cannot move after the short circuit is closed, thereby preventing the occurrence of load-carrying misconnection and misclosing of the isolation contact.
2. When the trolley is in the working position or about 10mm away from the test/isolation position, the grounding switch cannot be closed to prevent the grounding switch from being closed with power on.
3. When the grounding switch is closed, the trolley cannot be moved from the test/isolation position to the working position to prevent the circuit breaker from being closed when the grounding switch is in the closed position.
4. After the chassis car enters the cabinet, once it leaves the test/isolation position, the trolley cannot be pulled out of the cabinet.
In order to meet the needs of unmanned handling and remote control of the smart grid, the electric chassis car designed and developed by our company adds the electric entry and exit function without changing the original use function and installation size. This type of chassis car adopts single-chip microcomputer or PLC program intelligent control, and reserves a microcomputer interface. It has the characteristics of reliable structure, easy installation, long life, high intelligence and high versatility.

The control module is developed for the motor chassis truck. It is installed in the low-voltage room of the switchgear. It is used for the electric access control and protection device of the electric chassis. It can simplify the engineering design, reduce the secondary wiring work of the switchgear and improve the reliability.

Main functions:

1. Meet the basic control requirements of the handcart shake and shake, and the interlocking requirements of the circuit breaker and grounding switch.

2. With motor over-current protection function, the over-current can be adjusted to protect the motor.

3. Over-current return function, if there is abnormality in the process of rocking, the motor can be returned to the test position when it is over-current, or it can be stopped in half-turn.

L ock plate for Chassis Truck