Porcelain housed metal oxide surge arrester creepage distance220mm
Normal operating conditions for Surge Arrester :
1. The ambient air temperature is no higher than +40°C, no lower than -40 °C .
2. The altitude above sea level does not exceed 1000m. ( the plateau area should be indicated when order.)
3. AC system frequency is 50Hz or 60Hz.
4. Power frequency voltage brought to bear on arrester for a long time does not exceed the continuous operation voltage of the arrester.
5. Maximum wind speed does not exceed 35m/s.
6. The earthquake intensity does not exceed 7 degrees.
7. The pollution area should be indicated.
