ZW7-40.5 series outdoor high-voltage vacuum circuit breaker
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- Product Overview
- ZW7-40.5 Type Outdoor High-Voltage Vacuum Circuit Breaker is an outdoor high-voltage electrical device designed for 50Hz AC systems with a voltage of 40.5KV. Equipped with a spring operating mechanism or electromagnetic mechanism, it supports remote electric opening and closing, as well as on-site manual energy storage, manual opening and closing. Its design performance complies with the requirements of the national standard GB1984 "AC High-Voltage Circuit Breakers" and the International Electrotechnical Commission (IEC) standard IEC 60056 "AC High-Voltage Circuit Breakers". The ZW7-40.5 series outdoor high-voltage vacuum circuit breaker is mainly used for control and protection in outdoor 35KV power transmission and distribution systems, and is also suitable for normal operation and short-circuit protection in urban and rural power grids, as well as industrial and mining enterprises. The overall structure of the product is porcelain insulator column type: the upper porcelain insulator contains a vacuum interrupter, and the lower porcelain insulator serves as a supporting porcelain insulator. It is suitable for occasions requiring frequent operations and has the advantages of good sealing performance, anti-aging, high voltage resistance, non-combustibility, no explosion risk, long service life, and convenient installation and maintenance. When matched with a protection box, it can achieve complete load protection functions; when paired with an intelligent controller, it can realize distribution network automation.
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Model and Its Meaning
Service Conditions
3.1 Normal Service Conditions
a) The ambient air temperature shall not exceed 40℃, and the average value measured within 24 hours shall not exceed 35℃; the minimum ambient air temperature is -25℃.
b) The influence of solar radiation up to 1000W/m² (at noon on sunny days) shall be taken into account.
c) Altitude: Not exceeding 2000m.
d) The ambient air may be contaminated by dust, smoke, corrosive and/or flammable gases, vapors, or salt spray; the pollution degree shall not exceed Class Ⅲ specified in GB/T 5582.e) Wind speed: Not exceeding 34m/s.
f) Vibrations or ground motions originating from switchgear and controlgear are negligible.
g) The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6KV.
3.2 If the above normal service conditions are exceeded, the user shall consult with the manufacturer through negotiation. Similar Products
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