HY5WZ-66kV Station Type Zinc Oxide Arrester

Product Overview

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 adopt 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 HY5WZ-66kV 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.

HY5WZ-66kV 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. This 66kV station type arrester models include HY5WZ-84/221, HY5WZ-90/235, HY10WZ-84/221, HY10WZ-90/235.

Applicable Standards

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".

Main Technical Parameters

Outline Dimensions

This 66kV station type arrester adopts organic composite housing, which not only ensures excellent electrical performance, but also its structural design fully considers the convenience of station installation. The composite housing material has excellent weather resistance and mechanical strength, able to adapt to the complex environment of outdoor stations, ensuring long-term stable operation of the HY5WZ-66kV zinc oxide arrester.

During installation and maintenance, ensure vertical installation of the arrester, good contact of connection parts, and regularly check its appearance and leakage current. Correct selection and installation are key to achieving the best protection performance of zinc oxide arresters, effectively ensuring the safety of 66kV station systems.