低压交流无间隙金属氧化物避雷器正常运行条件有哪些？

What are the normal operating conditions of the low voltage AC no gap metal oxide arrester?

a.环境温度不高于+40℃，不低于-40℃；

The temperature of A. environment is not higher than +40 C, not less than -40 C.

b.海拔高度不超过1000m；

B. is not more than 1000m at altitudes.

c.交流系统的额定频率为50Hz；

The rated frequency of C. AC system is 50Hz;

d.长期施加在避雷器两端的工频电压应不超过避雷器的持续运行电压。

The power frequency voltage applied to the two ends of the lightning arrester for a long time should not exceed the continuous operating voltage of the arrester.