GB1985 / IEC 62EK6 -12 / 40.5kv Earthing Switch with Snap - Action Operating Mechanisms

GB1985 / IEC 62EK6 -12 / 40.5kv Earthing Switch with Snap - Action Operating Mechanisms
1? Normal Using Ambient Conditions

(a) ambient air temperature: upper limit? +40℃

? ??????????????????????lower limit – 25℃?

Remark: allow to store and transport under – 30℃

(b) altitude limit: under 1000m

(c) relative humidity: under 90%

(d) earthquake intensity : not higher than class Ⅷ

(e)the place should be without fire, explode danger, serious dust, chemical corrosion and strong shork.

2 Technical Parameters

Remark:the pole centers can be changed according to customers’ requirement

3 Summary

Earthing switches of series EK6 are determined for indoor in-stallation and conform to the requirements of GB1985 and IEC 62271-102. They are fitted with snap-action operating mechanisms for positive high-speed closing and sufficiently dimensioned to conduct the rated short-circuit making current when closed under load. The speed of the snap-action closing operation is independent controls. The earthing switches are supplied as kits with a pre-assem-bled active part and correspon ding earthing con tacts supplied loose. Correct in stallation of these parts in a switchgear panel results in a functioning earthing switch. Routine tests toGB1985 and IEC 62271-102 are to be carried out at site accordingly.