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.
2. Normal Using Ambient Conditions
(a) ambient air temperature: upper limit +40ºC;lower limit - 25ºC
Remark: allow to store and transport under - 30ºC
(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.
3. Technical Parameters
|4S rated short|
Remark: the pole centers can be changed according to customers' requirement
4. Product Model and Meaning
6.Struction and Function
5. Outline Dimension Drawing