SEK(SAK)系列接线端子

Regular service conditon：
1、Surrouding air temperature:the upper limit is 40℃，the lower limit is-25℃；      
2、The installation site altitude does not surp* the sea level  2000m；
3、In the periphery space temperature is 40℃，the relative humidity does not surp* 50%，in compares under the low temperaure,the permission has a higher relative humidity, For example,when the temproture is 20℃ relative humidity 90%，but should consider that take place in the congealing and revealing on the surface of products because of changing in temperature.must take the measure.
4、The pollution rand is 3 levels.

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