... Medium Voltage Switchgear,Metal-clad Switchgear,Switch Box 1.3~35kV 2.ABB, Schneider, GE parts optional 3.IEC298,GB3906 IP2X Medium Voltage Switchgear, Metal-clad Switchgear ... 15'C~+40'C2. Altitude: <=1000m3. Air humidity: daily average of Air humidity <=95%, daily average of partial vapor ... by 11 gauge metal barriers. Bus bars insulated with high dielectric epoxy pass through trackresistant polyester ...