What is the role of zinc oxide arrester manufacturers?
Metal Oxide Arrester in 10kV Distribution Network
The main function of a lightning arrester is to protect electrical equipment from insulation damage caused by lightning intrusion wave overvoltage and operating overvoltage.
Zinc oxide arrester selection:
Issues that should be paid attention to when selecting lightning arresters
First of all, when choosing, you should pay attention to the place of use. Different places have different models of arrester manufacturers.
Distribution type:
To protect switch cabinets, transformers, box-type transformers, cable heads and other related power distribution equipment of corresponding voltage levels from atmospheric and operating overvoltage damage, "HY5WS" metal oxide arresters should be selected. High voltage current limiting fuse
Power station type:
To protect AC electrical equipment in power plants and substations from atmospheric overvoltage and operating overvoltage, you can choose the "HY5WZ" or "Y5WZ" type;
Motor type:
Limit the over-voltage generated when the vacuum circuit breaker or low-oil circuit breaker switches on the rotating motor, and protect the rotating motor from damage due to operating over-voltage. You can choose the "HY2.5WD" or "Y2.5WD" type; drop-out fuse
Capacitor type:
Suppresses the overvoltage generated by the capacitor bank when operating a vacuum circuit breaker or oil-less circuit breaker, and protects the capacitor bank from damage due to operating overvoltage. "HY5WR" type is optional.
Basic principles of zinc oxide arrester: (European style cable joint)
Zinc oxide arrester is currently the ideal overvoltage protector in the world. It uses zinc oxide resistor as the main component. Compared with the traditional silicon carbide arrester, it greatly improves the volt-ampere characteristics of the resistor and increases the current flow capacity. It can be made into a gapless arrester. This has brought about fundamental changes in the structural characteristics of electrical appliances.
When the arrester is under normal operating voltage, the current flowing through the arrester is only microamps. When it suffers from overvoltage, the excellent non-linear characteristics of the arrester come into play. The current flowing through the arrester reaches thousands of amperes. The arrester is in a conductive state and releases overvoltage energy, thereby preventing overvoltage from damaging power transmission and transformation equipment.
Yichang Hengyuan Technology Co., Ltd. specializes in the production of European-style cable joints, plug-and-pull heads, cable branch boxes, American-style elbow joints, high-voltage vacuum circuit breakers, high-voltage load switches, arresters, zinc oxide arresters, tank arresters, over-voltage protectors, counters, monitors, heat-shrinkable cable accessories, Manufacturer of cold shrink cable accessories, T-heads, wall bushings, European cable accessories, American cable joints, transformer neutral point protection devices, fuses, isolating switches, PT cable heads, elbow cable joints, 10kV outdoor terminals, switch cabinets, cable intermediate joints, cable accessories and other products
