Rated Dynamic Stable Current 80kA EK6 -12 / 40.5kv Indoor Installation Earthing Switch
Certification:GB1984, IEC
Rated Dynamic Stable Current 80kA EK6 -12 / 40.5kv Indoor Installation Earthing Switch
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
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.
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