Normal service conditions:
1.The ambient temperature: -40°C ~+40°C
2.The altitude above sea level :not exceed 3000m (the altiplano area should be indicated when order)
3.Earthquake intensity: not higher than 7 degrees;
4.Maximum wind velocity :35m/s.
5.Free cleaning conditions:Medium filthy and the following areas;
(1)For gapless products, frequency voltage applied does not exceed the long-term continuous operating voltage arrester;
(2) For clearance of products, installation point increase in short-term frequency voltage arrester shall not exceed the rated voltage.
Abnormal use conditions:
Orders shoulad be explained:
1.Excessive temperature or attitude (attitude, tropical, boreal, closed cabinets with close to an electric furnace, etc);
2.Exist severe environmental moisture or corrosive gas impurities (water, salt, chemical plants,etc);
3.The strong ultraviolet radiation (plateau, said strong accoding to arid regions, etc);
4.Special heavy contamination areas (mine face, face constructure siites, etc).