how many earthing required for ups, what should be the
earth voltages
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Answer Posted / prabhu
Three Earthings are required.
1. DC side Earthing to avoid the distortion in the line.
2. Equipment Earthing
3. Electronic Earthing for the cards which works in low
voltage.
Where the internal convertor will have the Trafo, that will
be connected for the common earthing.
Both should not common, if Electronic items will get affect
when Ground current flows more than a limit.
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