Reasons and solutions for the burnt energy storage motor of VS1 vacuum circuit breaker

The energy storage motor in the vs1 vacuum circuit breaker is an important component of the vacuum circuit breaker. When we use the VS1 vacuum circuit breaker, we sometimes encounter the energy storage motor being burned. So what are the main reasons for it being burned?

The energy storage motor of the vs1 vacuum circuit breaker burned out repeatedly, and most of them burned out soon after the user used it. We compared the burned vs1 vacuum circuit breaker with other circuit breakers and found that the power of the energy storage motor used in the burned circuit breaker was 170W. , the minimum energy storage motor of other high-voltage vacuum circuit breakers is 240W (all use series motors), and the power of the energy storage motor used in the burned circuit breaker is not sufficient. This may be one of the main reasons for repeated burnouts. Secondly, on the line, the vs1 vacuum circuit breaker uses an energy storage in-position travel switch to disconnect the energy storage motor circuit when the energy storage is in place. However, according to the conventional domestic design, the energy storage motor circuit must be connected in series with an "energy storage switch" (usually a LAl8-22X type knob is installed on the panel). When the "energy storage switch" is closed, the energy storage motor circuit is connected and the energy storage is in place. The internal travel switch disconnects the energy storage motor circuit and the energy storage motor stops. After "closing" to release energy, the energy storage motor automatically rotates to store energy. ; When the "energy storage switch" is opened, the high-voltage vacuum circuit breaker is closed and the stored energy is released. Since the "energy storage switch" is already open, the second energy storage will not start after the energy is released, and the energy storage spring will not be in a tense state. . Although the "energy storage switch" is easy and convenient to operate, it is easy to turn the "energy storage switch" during the energy storage process, causing the energy storage motor to stop midway. Since the energy storage spring is already in a tense state at this time, when restarted, the energy storage motor will start under heavy load (or even stalled state), the current will be very large, and there are no protection measures in the entire circuit. This is a direct cause of burning the energy storage motor. reason.

We know the reason, so what better ways to improve it and how to deal with it?

Improvement methods of vs1 vacuum circuit breaker:

After finding the cause of the accident, you can place an order accordingly, change the LA18-22X type knob to a *5 type circuit breaker, and install it inside the door (next to the high-voltage vacuum circuit breaker). The user can only make energy storage options when opening the door. In case of misoperation, the overcurrent protection of the *5 type circuit breaker will cause the electric energy storage to be unable to continue. At this time, manual energy storage can be used to help the energy storage in place (the door generally does not have a hole for the energy storage crank handle. Now the door is When it is on, manual energy storage is very convenient), and focus on writing this precaution and operation method in the "User Manual". Practice has proven that after taking these measures, the accident of burning the energy storage motor did not occur again.