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trajeshkannan
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Join Date: Nov 2008
Posts: 4

Neutral - earth

11/08/2008 11:15 PM

Neutral with you earthed. When i measuring three phase voltge my multimeter. Phase voltage 480 . Same time i check with tester no indication in B phase.
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popoy12345
Active Contributor

Join Date: Oct 2007
Location: Philippines
Posts: 17
#1

Re: Neutral - earth

11/09/2008 4:47 AM

Indicate what is the connection of your transformer, I guess Secondary side is Delta B Pahse Grounded. Please Advise
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trajeshkannan
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Join Date: Nov 2008
Posts: 4
#2
In reply to #1

Re: Neutral - earth

11/09/2008 9:49 PM

Ok, i will check . thanks you
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harry potter
Power-User

Join Date: Nov 2008
Location: India
Posts: 333
Good Answers: 6
#3

Re: Neutral - earth

11/11/2008 7:14 AM
I understand the winding is star connected, with your certification, it is confirmed that the neutral is grounded well.

If in such confusions, some times it is best to check with lamp holder tester - with 2 220v lamps in series. & 2 wires connecting to phases ( or Volt meter )... R-Y , Y- B , B- R . You should take all three readings / checks.

If there is single phase, you shall make out immediately.

With line tester, which works on the priciple of discharge current in neon lamp, thru our body, if our hand / body is not proper earthed, some times mis leads.

harry potter.

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