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rohru
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Join Date: Mar 2013
Posts: 1

Earthing Wire for 33kv and Below Voltage Levels

03/09/2013 7:32 AM

Why the earthing wire for 33kv are placed below the phase conductors and not above the phase conductors?
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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Earthing wire for 33kv and below voltage levels.

03/09/2013 9:08 AM

The answer lies within:

STRINGING OF CONDUCTORS AND EARTH WIRE

Overhead power line - Wikipedia, the free encyclopedia
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wareagle
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United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
Posts: 1604
Good Answers: 63
#2

Re: Earthing wire for 33kv and below voltage levels.

03/09/2013 5:13 PM

Most all distribution systems have the grounded neutral below the phase conductors.

What advantages do you think placing the conductor above the phases would be?
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pnaban
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Join Date: Jun 2010
Location: srilanka
Posts: 2725
Good Answers: 5
#3

Re: Earthing Wire for 33kv and Below Voltage Levels

03/10/2013 5:54 AM

LV lines are near ground compared to HV lines which if struck by lightning will paralyse a larger area than Lv lines. Therefore earthwire above phase wires acts as a shield to lightning in HV lines.

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