Knowledge

The combined unit is a device that has the functionality of a standard cut-out fuse and a distribution class drop-out surge arrester built into a single device. In the event of a surge diverter failur

Drop-out fuses are the most commonly used short-circuit protection switches for branch lines and distribution transformers in 10kV distribution lines. They feature economy, ease of operation, and stro

The specific working process of a lightning arrester during a lightning strike is to guide and disperse the overvoltage generated by lightning, preventing it from passing through power equipment and p

Surge arresters are commonly used intrusion wave protection devices and also the most widely applied overvoltage limiters. Essentially, they are absorbers of overvoltage energy. It operates in paralle

The main function of a lightning arrester is to protect various electrical equipment in the power system from damage caused by lightning overvoltage, operational overvoltage and power frequency transi

It is mainly used for overload and short-circuit protection of circuits in electrical devices. The rated voltage of the JPU fuse JPU-200A is AC415V/600V, the rated current is 400A, the application cat

(1) Small contact opening distance and fast action; (2) The arc burning time is short and the contact burnout is light. (3) Long service life, suitable for frequent operation; (4) It is small in size,

The arc extinguishing chamber is a part of the vacuum circuit breaker. Without an arc extinguishing chamber, the circuit breaker cannot provide short-circuit protection. The function of a circuit brea

The fuse in the low-voltage distribution system is a kind of electrical appliance that plays a safety protection role. The fuse is widely used in power grid protection and electrical equipment protect

(1) Fuse use precautions: ① The protection characteristics of the fuse should be compatible with the overload characteristics of the protected object, taking into account the possible short-circuit cu

Low voltage fuse is a kind of short circuit protection appliance commonly used in factory low power supply circuit. When a short circuit accident occurs in the circuit, the short circuit current is ve

New trends in the power industry: stay rod technology has become the key to guarantee the security and stability of energy transmission and distribution, and support grid equipment through high-streng