Zinc Oxide Arrester
Product Title
Product Details
Metal oxide arresters (zinc oxide arresters) produced and sold are currently the best type of overvoltage protection devices, widely used in power generation, transmission, transformation and distribution systems to protect the insulation of electrical equipment from overvoltage damage. Their core components use zinc oxide resistor discs with excellent "nonlinear volt-ampere" characteristics, greatly improving overvoltage current carrying capacity, thus bringing fundamental changes to arrester characteristics. Under normal operating voltage, the current through the HY5WD-13.5/31 generator type zinc oxide arrester is only microampere level. When subjected to overvoltage, due to the nonlinearity of zinc oxide resistance, the current through the arrester instantly reaches thousands of amperes, and the arrester is in a conducting state, releasing overvoltage energy, thereby effectively limiting overvoltage damage to transmission and transformation equipment.
Organic housing metal oxide arresters are a scientific research achievement combining organic insulation materials with traditional porcelain housing metal oxide arrester technology advantages. They not only have the advantages of porcelain housing metal oxide arresters, but also have good electrical insulation performance, high dielectric strength, anti-tracking, anti-corrosion, heat resistance, cold resistance, aging resistance, explosion-proof, hydrophobicity, and good sealing performance. This makes HY5WD generator type arresters more reliable in complex environments.
HY5WD-10kV zinc oxide arrester is suitable for AC 220kV and below power generation, transmission, transformation and distribution systems, used to limit the amplitude of lightning and system internal operating overvoltages to specified levels, and is the basic equipment for system insulation coordination. It is the ideal lightning protection component for integrated, modular medium and high voltage transmission and transformation complete equipment. Generator type arrester models include HY5WD-12.7/31, HY5WD-17/31, HY5CD-12.7/28, HY5WD-17.5/40.
This product model is compiled according to JB/T8459-1996 "Arrester Product Model Designation Method". Gapless products comply with GB11032-2000 "AC Gapless Metal Oxide Arresters"; gapped products comply with JB/T9672-2005 "Metal Oxide Arresters with Series Gaps". Important parameters and configuration methods not clearly defined in the above standards shall be modified and implemented according to DL/T620-1997 "Overvoltage Protection and Insulation Coordination of AC Electrical Installations".
| Arrester Model | System Rated Voltage kV | Arrester Rated Voltage kV | Continuous Operating Voltage kV | DC 1mA Voltage kV | Lightning Impulse Residual Voltage kV | Switching Impulse Residual Voltage kV | Square Wave Current Capacity A | High Current Impulse Withstand kA | 0.75U1mA Leakage Current μA | Material | Application |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HY5WD-12.7/31 | 10.5 | 12.7 | 6.6 | 7.2 | 50 | 42.5 | 75 | 40 | 50 | Composite Housing | Generator Type |
| HY5WD-13.5/31 | 10.5 | 13.5 | 110.5 | - | 50 | 42.5 | 75 | 40 | 50 | Composite Housing | Generator Type |
| HY5CD-12.7/28 | 10.5 | 12.7 | - | - | 45 | 38.4 | 75 | 40 | - | Composite Housing | Generator Type |
| HY5WD-17.5/40 | 13.8 | 17.5 | 13.8 | - | - | - | - | - | - | - | - |
HY5WD-13.5/31_Zinc Oxide Arrester_Generator Lightning Protection
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