WHAT IS THE DIFFRENCE BETWEEN EARTHED AND UNEARTHED CABLE
(XLPE)?
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Answer Posted / kalyan chekuri
I have a system which had 400kV 100 MVA/11 kV 50 MVA/11kV 50
MVA transformer whose secondary is earthed with NGR of 300
Amps. I have bought 18000 Km of 11 kV earthed cable to lay
on 11 kV side of it. If the phase to earth voltage is 6.4kV
and root 3 times is the voltage expected to go up i.e 11kV,
why cant it be used if the power frequency withstood for
17kV for 5 minutes
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