Elbow Arrester

   Metal oxide arresters are international high-tech products in the 1990s. They use oxygen zinc resistors with excellent nonlinear volt-ampere characteristics, so the protection characteristics of the arrester under the slope, lightning wave, and operating wave are greatly improved compared to traditional silicon carbide arresters. In particular, zinc oxide resistors have good slope response characteristics, no delay for steep slope voltage, low operating residual voltage, and no discharge dispersion. Thus, the inherent shortcomings of silicon carbide arresters, such as high steep slope discharge voltage caused by steep slope discharge delay, high operating wave discharge voltage caused by large operating wave discharge dispersion, are overcome, and the protection margin under steep slope and operating wave is greatly improved. In addition, in terms of insulation coordination, the protection margin of steep slope, lightning wave, and operating wave can be close to the same, thereby providing the best protection for power equipment and improving the reliability of protection. Zinc oxide arresters also have the ability to absorb lightning overvoltage, operating overvoltage, and power frequency transient overvoltage.
    Composite jacket metal zinc oxide arresters are international high-tech products in the 1990s. It is molded with integral silicone rubber, has good sealing performance, excellent explosion-proof performance, is resistant to dirt and requires no cleaning, can reduce the occurrence of wet flashover in foggy weather, is resistant to electrical corrosion and aging, is small in size and light in weight, is resistant to collision, and is easy to install and maintain. It is an updated product of porcelain sleeve arrester.

    The standards for product production are GB11032-2000 (eqv IEC60099-4:1991) "AC gapless metal oxide arresters" and JB/T8952-2005 "Composite jacket gapless metal oxide arresters for AC systems".

1. Ambient temperature is -40℃~+40℃;
2. Altitude is not more than 2000m;
3. Power frequency is 48Hz~62Hz;
4. Maximum wind speed is not more than 35m/s;
5. Areas with earthquake intensity of 7 degrees or less.
The long-term applied voltage shall not exceed its maximum continuous operating voltage.

    1. Small size, light weight, collision resistance, no collision loss during transportation, flexible installation, especially suitable for use in switch cabinets;
    2. Special structure, integrally molded, no air gap, good sealing performance, moisture-proof and explosion-proof;
    3. Large creepage distance, good water-increasing property, strong pollution resistance, stable performance, and reduced operation and maintenance;
    4. Uniquely formulated zinc oxide resistor, high capacity, low leakage;
    5. The actual DC reference voltage, square wave current capacity and large current tolerance are all higher than the national standards.

Distribution type lightning arrester: used to protect power main transformers, switch cabinets, box-type transformers, power cable outlets, pole switches and other distribution equipment of corresponding voltage levels from the hazards of atmospheric overvoltage and operating overvoltage.