What will be the effect of in HT XLPE 220 KV cable when one side of the Armour/

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??

Question Posted / mahendar kumar

3 Answers
5731 Views
Jamshoro, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What will be the effect of in HT XLPE 220 KV cable when one side of the Armour/cable ends are not ..

Answer / 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

What will be the effect of in HT XLPE 220 KV cable when one side of the Armour/cable ends are not ..

Answer / mahendar kumar

In my opinion Phase voltage would be affected due ungrounded
one end cable.

Is This Answer Correct ?

2 Yes

2 No

What will be the effect of in HT XLPE 220 KV cable when one side of the Armour/cable ends are not ..

Answer / k.prakashchandra

You have measured voltages with the help of PTs located near
the earthed cable ends . As there is a slight difference in
capacitances of the three cables to the Armour(probably due
to unequal lengths) and impedance of the PT is higher than
that of capacitance of the cable ,the neutral is decided by
the capacitances.There is no difference in actual voltages
but there will be a slight difference in measured voltages

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

Can any body tell me about INNER SHUNT COMPOUND MOTOR diagram?

0 Answers

For an 100kw generator, only 50kw of load is connected. Will the generator generate only 50kw or 100kw. If it generate 100kw what happens to rest of the 50kw. What happens if we connect more than 100kw of load?

2 Answers L&T,

I AM A ELECTRICAL PANEL BOARD DESIGN ENGINEER.IF I GO ANY INTERVIEW ,TECHNICALLY WHAT ARE QUESTIONS I WILL FACE FROM INTERVIEWER?

0 Answers Bell,

How the FM200 Gas Supression System wil Work????

1 Answers Emerson,

Is there any type of starter for DC motor other than two point,Three point and Four point starters?

0 Answers

why does make gain margin and phase margin on same plot.?

0 Answers

What is the meaning of Dyn11 of Transformer.

17 Answers

What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

0 Answers PNG Power,

how synchronous condenser is used in place of synchronous generator with out negotiating IEEE standards? Can i use 3 generators as synchronous generators and 2 generators as a synchronous condensers in an IEEE 14 bus system with out disturbing the standards?

0 Answers

AIR GAP IS TERMED AS USEFUL. WHY?

5 Answers

What are the advantages of hydropower?

0 Answers

working function importance of mdc meter

0 Answers

For more Electrical Engineering Interview Questions Click Here