News
2023-11-29
High-voltage circuit breaker, we also call it high-voltage switch. Its function is generally used to cut off the current in high-voltage circuits. When the circuit fails, it can also function as a protection device, which can cut off the current exceeding the load and some......
2023-10-31
At present, more and more countries use vacuum circuit breakers. After long-term use, the performance of the equipment needs to be tested. So what are the testing standards? Let’s talk about that next.
2023-10-27
First select according to normal conditions, and then verify according to short circuit conditions. In addition, the rated breaking current of the circuit breaker must be greater than the maximum short-circuit current that may pass through the circuit breaker to ensure tha......
2023-10-20
The overall structure of the porcelain bushing pillar type outdoor high-voltage vacuum circuit breaker is: the upper porcelain bushing is an arc extinguishing chamber bushing with a built-in vacuum arc extinguishing chamber, and the lower porcelain bushing is a pillar bush......
2023-10-12
At present, the high-voltage vacuum circuit breakers of 10kV and above produced in the industry have manual and electric energy storage methods if they are equipped with spring operating mechanisms. The so-called energy storage means that when the circuit breaker is powere......
2023-09-22
Drop-out fuse is a special type of electrical protection device. It is characterized by a rapid power-off function, which can automatically disconnect the circuit when the circuit load exceeds the rated power, ensuring the safety and stable operation of electrical equipme......
