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Working conditions of circuit breakers

Dec 18, 2018

Ambient air temperature: ambient air temperature upper limit +40℃;0 ambient air temperature limit-5 ℃; ambient air temperature The average of 24h does not exceed +35℃.

Elevation: The elevation of the installation site does not exceed 2000m.

Atmospheric conditions: The relative humidity of the atmosphere is no more than 50% when the ambient air temperature is +40℃, there can be a higher relative humidity at a lower temperature, the average monthly maximum relative humidity of the wettest month is 90%, and the average monthly minimum temperature of the month is +25℃, taking into account the condensation on the surface of the product due to temperature changes. Pollution grade: The pollution level is level 3.

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