Standard and Special Usage Conditions

Normal operating conditions

Ambient Temperature: High temperature: +40°C, low temperature: -15°C, with an average value not exceeding 35°C within 24 hours.

Humidity conditions are as follows:

The average relative humidity does not exceed 95% daily; the average monthly relative humidity does not exceed 90%.

Average steam pressure not exceeding 2.2 kPa per day; monthly average steam pressure not exceeding 1.8 kPa.

Under such conditions, condensation may occasionally occur.

Altitude not exceeding 1,000m.

The surrounding air is not visibly contaminated by dust, smoke, corrosive and/or flammable gases, vapors, or salt spray.

Vibrations or ground movements from external switchgear and control equipment can be ignored.

The amplitude of electromagnetic interference sensed in the secondary system does not exceed 1.6kV.

◆Special Usage Conditions

Under normal operating conditions as specified in GB/T11022, our company and the user may negotiate and reach an agreement on special operating conditions.

To prevent the occurrence of sea tickets, the switchgear is equipped with a heater. The heater should be put into use as soon as the switchgear is in a standby state. The heater should also be activated during normal operation of the switchgear.