12 / 40.5kv Working Voltage Earthing Switch With Snap - Action Operating Mechanisms
12 / 40.5kv Working Voltage Earthing Switch With Snap - Action Operating Mechanisms
12 / 40.5kv Working Voltage Earthing Switch With Snap - Action Operating Mechanisms

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12 / 40.5kv Working Voltage Earthing Switch With Snap - Action Operating Mechanisms

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12 / 40.5kv Working Voltage 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

 

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.


 

  More Information,Please See Our Official Website: www.meletek.com 

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