MV System Earthing
MV System Earthing
(OP)
Are there examples of either industrial or utility MV (approximately 1 to 33 kV) distribution systems operating without any form of system earth. By any form I exclude even voltage transformer earthing. I mean fully floating.






RE: MV System Earthing
The other connection to ground was the three "Ground detector lights." If you got a ground on one phase one of the lights went out. Usually neon lamps about an inch in diameter were used. I once met an old electrician about a week after he used the old method on a new 1000 KVA 277/480 solidly grounded transformer. His hands were still in bandages the size of boxing gloves.
yours