Summary
ZW7-40.5 outdoor high voltage vacuum circuit breaker for AC 50Hz, rated voltage 40.5kV outdoor high-voltage electrical equipment. The attached spring operating structure or electromagnetic operating structure can be used for remote control of electric opening and closing, local manual energy storage and manual opening and closing. The design performance meets the requirements of GB1984-2014 AC high voltage circuit breaker. And meet IEC - 56 requirements of International Electrotechnical Commission standard AC high voltage circuit breaker. ZW7-40.5 series outdoor high voltage vacuum circuit breaker is mainly used for the control and protection of outdoor 35kV Power Transmission and transformation system, as well as the normal operation and short circuit protection of urban and rural power grids and industrial and mining enterprises. The overall structure of the product is porcelain pillar type; the upper porcelain bottle is equipped with vacuum arc extinguishing chamber, and the lower porcelain bottle is pillar porcelain bottle. Suitable for frequent operation. It also has the advantages of good sealing, anti-aging, high pressure resistance, no combustion, no explosion, long service life, convenient installation and maintenance, etc.

Model and its meaning


Model and its meaning
1. Normal use conditions
a) Ambient air temperature
Maximum temperature + 40 ℃
Minimum temperature - 30 ℃
b) Altitude not more than 3000m
c) Wind pressure shall not exceed 700pa (equivalent to wind speed of 34m / s)
d) The seismic intensity shall not exceed M 8
e) Air pollution level III
2. Special working conditions
When using in special working environment, we can make corresponding design according to the requirements of special working environment.


Main technical parameters


Outline and installation dimension drawing