Fundamentals In the application of all terminal blocks, European-style terminal blocks have application advantages. The key is that they not only have high airtightness during the entire process of use, but also have a high guarantee for the safety factor, but Compared with other terminal blocks,...

The high-voltage load switch is used to break the load current (including regular overload current) under operation, and has a certain ability to adjust the photosynthetic short-circuit current and thermal stability. It is often used together with fuses in the power system. The load switch is use...

Fuse is also called fuse, melt. The residential total fuse is installed after the electric energy meter, and the porcelain plug-in fuse is generally used. Now as the total protection of the house, circuit breakers are usually used instead of fuses. Urban and rural individual workshops, old urban ...

High-voltage fuses are generally used in small-capacity power grids with a voltage lower than 35kV. When an overload or short circuit occurs in the system, the melt is blown due to overheating, thereby cutting off the line and protecting the power grid and electrical equipment. Its working princi...

The high-voltage load switch is a combined high-voltage electrical appliance, which consists of an isolating switch, a fuse, a thermal relay, a shunt release and an arc extinguishing device. The high-voltage load switch has a simple arc extinguishing device, which can only be used to make and bre...

1.According to the circuit breaker installation method (1) Removable type or handcart type (represented by Y) It means that the main electrical components (such as circuit breakers) in the cabinet are installed on the drawable handcart. Because the handcart cabinet has good interchangeability, it...

Five defenses of high voltage switchgear 1. After the vacuum circuit breaker trolley in the high-voltage switch cabinet is closed at the test position, the trolley circuit breaker cannot enter the working position. (to prevent closing with load) 2. When the grounding knife in the high-voltage swi...

Product Description For oil-immersed transformers of 1000kVA and above, outdoor thermometer-type signals should be installed, and then long-distance signals. Oil-immersed transformers of 800kVA and above should be equipped with gas relays and pressure protection devices. Oil-immersed transformers...

Cause of cable fire and explosion 1. The cable head burns Because the surface of the cable head is damp and dirty, the ceramic sleeve of the cable head is broken and the distance between the lead wires is too small, which leads to flashover and fire, causing the surface insulation of the cable he...

Nominal diameter of heat shrinkable tube: The key of the heat shrink tube is to be used as a preventive product for the cable. The cross section of the heat shrinkable tube is a cylindrical tube shape, so the nominal diameter is the size of the inner diameter of the wall thickness. This main para...

Cold-shrinkable sleeve products can provide a safe protection and give a sealed connection to the communication coaxial line. It is commonly used as a moisture-proof rubber seal at the junction of communication base stations, wireless communication towers and other exposed coaxial lines. The cold...

Nowadays, many companies will consider the application of heat shrinkable sleeves as insulating waterproof sleeves? Whether the heat shrinkable sleeve is the same as the insulation involves many electronic component processing plants. As one of the key parameters of the heat shrinkable sleeve, th...