Overview

Working environment conditions:

1.1 The ambient air temperature does not exceed 40°C, the average measured within 24h does not exceed 35°C, and the minimum ambient air temperature is -15°C;

1.2 Altitude: Not higher than 1000m;

1.3 The surrounding air is not polluted obviously by dust, smoke, corrosive or flammable gas, steam, and salt mist;

1.4 Humidity conditions: daily mean value is not greater than 95%; monthly mean value is not greater than 90%; the average of water vapor pressure is not greater than 2.2kPa; the average of the monthly water steam pressure is not greater than 1.8KPa;

1.5 Vibration or ground movement from the outside of switchgear or control equipment can be negligible;

1.6 The amplitude of the conduced electromagnetic interference in the secondary system cannot exceed 1.6kV;

1.7 Special use conditions

If the altitude at the installation site exceeds 1000m, or the ambient air temperature exceeds the limit specified in the normal working conditions or the installation site is highly humid to easily cause condensation, please contact our company for customization.