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What will be the effect of in HT XLPE 220 KV
cable when one side of the Armour/cable ends are not
grounded. Will there is difference between 3-phase voltages?
like: if
A. Both End of Cable grounded Phase Voltages:- V1=219 KV,
v2=220 Kv, v3=220 KV.
B. One End is grounded other is not: than Impact on Phase
Voltages:- V1= KV, v2= Kv, v3= KV. Remain same or
unchanged??
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Answer Posted / hemant
mostly we consider that armour is given for machanical
protection to cable from any type of hard punching on cable
and other if cable get damaged then it touch to armour
which alredy connected to ground hence our differantial
reley get pick up and device which connect to ht cable is
protected. if both end of armour is connected to ground
there may not any effect to supply voltage in cable it
depend upon cable insulation. only leakage current get
discharge via armour to ground. hence in point of me trere
is no one effect on 3 phase voltage it also remain same.
one thing is that armour one end require to connect ground
and second to device for earthing to device.
| Is This Answer Correct ? | 2 Yes | 1 No |
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