Product Description:
Series LDQ9 terminal type dual power automatic transfer switch is suitable for 50Hz/60Hz, rated working voltage 110V/ 220V (2P), 380V (3P, 4P), and rated current 6A-630A terminal type double loop power supply system. It can complete the automatic conversion between the common power supply and the standby power supply to ensure the reliability of the power supply. Mainly used in high-rise buildings, shopping malls and other places such as fire pumps, smoke suppression fans, elevators, domestic water pumps, accident lighting, distribution signs and other places.
Working Conditions:
Ambient air temperature: 

a. The upper limit does not exceed +40℃

b. The lower limit does not exceed -15℃

c. The average value within 24h does not exceed +35℃.

Atmospheric integrity:
a. When the ambient air temperature is +40℃, the relative humidity of the air does not exceed 50%. When the lower temperature is +25℃, the maximum relative humidity is 90%;
b. When the average minimum temperature of the wettest month is +25℃, the maximum relative humidity is 90%
c. Condensation on the surface of the product due to temperature changes has been considered.
Pollution degree and installation category: Pollution degree is level 2, installation category II, III.