Widely used in ac 50Hz, rated voltage 380V distribution system, as power, lighting and power distribution equipment conversion, points Distribution, control, measurement, compensation and protection.This product has high breaking capacity, good dynamic and thermal stability, flexible electrical scheme,practicability, novel structure and high protection level.
The average daily temperature is not higher than + 35 ℃;
Air relative humidity, daily average relative humidity is not more than 95%, the highest temperature is + 25 ℃;Relative humidity can be up to 100% for a short time.
Not more than 2000m above sea level.
The inclination of the vertical plane during equipment installation shall not exceed 5 degrees;
The equipment should be installed in places free from violent vibration and shock, and places where electric appliances are not subject to corrosion.
System grounding: neutral direct grounding;
The voltage fluctuation range shall not exceed 1 0% of the rated working voltage