minimum clearances distance IEC/BS standards
minimum clearances distance IEC/BS standards
(OP)
What are the designates minimum clearances distance around MV and LV switchgear (indoor switchgear)according with IEC/BS standars?
The MV gear is 11kV and LV is 400V.
The MV gear is 11kV and LV is 400V.






RE: minimum clearances distance IEC/BS standards
You should also review IEC 61936 "Power installations exceeding 1 kV a.c." which definitely contains some clearance and separation information.
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RE: minimum clearances distance IEC/BS standards
I did find the following text in the ABB switchgear manual which cites a German DIN standard 0101. "The minimum width of gangways in indoor installations should be 800 mm. For safety reasons these dimensions must not be reduced, not even by projecting parts such as fixed drives, control cabinets, switchgear truck in isolated position. Cubicle doors must slam shut in the escape direction. When the door is open, the gangway width
must still be 500 mm. For service aisles behind metall-enclosed installations; a minimum gangway width of 500 mm is permissible."
Regards
Marmite