Standard:
1.IEC 62271-100 High-voltage switchgear and controlgear
2.GB/T 11022 -2011 Common specifications for high-voltage switchgear and controlgear standards
3.GB 1984 High-voltage alternating-current circuit-breakers
4.GB311.1 Insulation co-ordination for high voltage transmission and distribution equipment
Ambient condition:
1. Altitude: ≤ 2000m
2. Ambient temperature: -40°C~+40°C
3. Relative humidity:≤95% (daily average)or≤90% (monthly average)
4. Ambient pllution: IV
5.Wind speed:≤34m/s (equivalent to a pressure of 700pa on a cylindrical surface) .





