Delivery Time:7-25days
Certification:CE、ROHS、 FCC、GB1984, IEC
12 / 40.5kv Working Voltage Earthing Switches with Snap - Action Operating Mechanisms

3 Summary

Earthing switches of series EK6 are determined for indoor in­stallation 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-assem­bled 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.

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

Model	Rated voltage (kV)	Highest working voltage (kV)	4S rated short time withstand curren(kA)	Rated dynamic stable current (peak value) (kA	Making current(peak value)   (kA)	Pole centers (mm)	Making speed  (m/s)	Main circuit contact resistence (μΩ)
EK6-12/31.5-210	10	12	31.5	80	80	210	﹥6	＜120
Ek6-40.5/31.5-280	35	40.5	31.5	80	80	280	﹥6	＜120

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