This series of low-voltage withdrawable switchgear is suitable for power plants, substations, petrochemicals, metallurgical rolling steel, transportation energy, Light industrial textiles and other factories and mines, residential quarters, high-rise buildings and other places, for the exchange, distribution and control of power distribution equipment of 50-60Hz, rated working voltage AC 660V and below.
The ambient air temperature is not higher than +40 ° C, not lower than -5 ° C, and its average temperature is not higher than +35 ° C within 24 h. Atmospheric conditions: The air is clean, the relative humidity is not more than 50% at a maximum temperature of 40 ° C, and a higher relative humidity is allowed at a lower temperature, for example, 90% at 20 ° C. However, due to temperature changes, condensation may occur by chance. Altitude does not exceed 2000M The device is suitable for transport and storage at temperatures between -25 ° C and +55 ° C, up to +70 ° C in a short time (not exceeding 24 h), at which the device should not be subjected to any Unrecoverable damage and should work properly under normal conditions. If the above conditions of use are not met, it should be resolved by the user and the manufacturer. When the device is used in oil drilling platforms and nuclear power plants, a technical agreement shall be signed separately