China Earthing Switches,Earthing Switches Manufacturer
Operating Mechanism
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Model No: EK6
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.
| Model | Rated voltage(kV) | Highest working voltage(kV) | 4S rated short time withstand current(kA) | Rated peak value of current(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 |
