ZW20A outdoor high-voltage alternating-current vacuum circuit breaker is a new outdoor high-voltage alternating-current vacuum circuit breaker of our vacuum circuit breaker series products. Its rated voltage is 24 kV. It applies to places with such voltage level, including overhead lines, industrial and mining enterprises, power stations, substations, etc. In normal operating conditions and specified technical parameters, it can satisfy the protection requirements of systems connected with the grid in service. It has good performance in short-circuit making and breaking. It is characterized by automatic re-making, stable operation and long electric life.
ZW 20A outdoor high-voltage alternating-current vacuum circuit breaker is produced in line with the following standards and codes.
● IEC 62271-100 High-voltage alternating-current circuit-breakers
● GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
● GB 1984 High-voltage alternating-current circuit-breakers
● GB 311.1 Insulation co-ordination for high voltage transmission and distribution equipment
Normal operating conditions
● Ambient temperature: - 40℃~+40℃
● Altitude:≤ 2000m
● Relative humidity: ≤95% (daily average) or≤90% (monthly average)
● Wind speed: ≤34m/s (equivalent to a pressure of 700pa on a cylindrical surface)
● Pollution grade:≤Ⅳ
