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11 comments
Member

Join Date: May 2012
Posts: 6

Electrical Supply Problem

05/07/2012 2:58 AM

Dear team,

I'm saran from bangalore working as technical engineer.

I'm facing a problem in power supply given to a server rack.

The server consist of two source of input with two different power distribution unit as usual we connected both the power cable of the power distribution unit in a single socket supply.

After we turned on the supply we are getting 230 V in one power distribution unit.

The other unit shows P-N =86 Volt N-E = 197 Volt P-E = 230 Volt

What may be the problem? I checked the power distribution unit specification it 's input is 240 Volt 30 Amps

Please help me with this.

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Pathfinder Tags: power distribution
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Power-User

Join Date: Jun 2009
Posts: 210
Good Answers: 1
#1

Re: Electrical Supply Problem

05/07/2012 10:10 AM

The N wire has somewhere lost contact.

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Member

Join Date: Apr 2012
Posts: 9
#2
In reply to #1

Re: Electrical Supply Problem

05/07/2012 2:20 PM

its NOT the manger issue of N I.e CROSS power connectivity loss

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Guru
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#3
In reply to #2

Re: Electrical Supply Problem

05/07/2012 2:44 PM

Are you familiar with the term plagiarism?

You have plaigarised my signature line.

Kindly change your signature line.

Thank you.

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Luck comes and goes. Skill is forever. Intelligence either is, or it ain't. lyn
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Guru
United States - Member - USA! Hobbies - Musician - Sound Man Engineering Fields - Mechanical Engineering - More than a Hobby Technical Fields - Technical Writing - New Member

Join Date: Oct 2008
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#4
In reply to #3

Re: Electrical Supply Problem

05/07/2012 3:55 PM

awww how cute, you have an admirer.

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Guru
Hobbies - Automotive Performance - New Member Popular Science - Weaponology - New Member

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#5
In reply to #4

Re: Electrical Supply Problem

05/07/2012 4:04 PM

If only they know the real me.

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Power-User

Join Date: Aug 2007
Location: Queensland, Australia.
Posts: 108
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#11
In reply to #3

Re: Electrical Supply Problem

05/08/2012 6:11 PM

Come on Lyn, honestly?, that is like having to cite 'imitation is the kindest form of flattery' every time you said it.

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Power-User
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#6

Re: Electrical Supply Problem

05/07/2012 5:59 PM

The second power supply is faulty.

Somewhere within the power supply the Neutral wire has come loose.

Remove and repair or replace the faulty power supply before it does more damage or hurts someone if the loose wire moves and touches the chassis of the power supply and or server.

Regards,
Sapper

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Guru
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#7

Re: Electrical Supply Problem

05/07/2012 11:20 PM

I'm saran from bangalore working as technical engineer

Just curious...are there other kinds of engineers too? Strange i never came across any other kind

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Guru
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#8
In reply to #7

Re: Electrical Supply Problem

05/07/2012 11:29 PM

I've come across some "Sales Engineers" that made me wonder.

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Guru
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#9
In reply to #8

Re: Electrical Supply Problem

05/07/2012 11:46 PM

Ah. i know what you mean. The 'sales engineer' who came to sell computers to my department had to call his 'technical engineer' when he was asked about some detailed questions.

Reminds of an old Indian story : In a village, it so happened that all but one of the children born over a short time were girls. The lone boy grew up playing girl games with his contemporaries. As is normal in our villages, all the menfolk would go to the fields during the day. One day a snake crawled into the village square. All the women ran away, shouting "Call the men!!!". In this panic, even the young boy ran along with everyone else, shouting "Call the men !". Sales engineers indeed !

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Active Contributor

Join Date: Jan 2012
Posts: 16
#10

Re: Electrical Supply Problem

05/08/2012 4:23 AM

saran, I would recommend to check each PDU while isolating the other.

If all phase and line voltages of both PDUs are similar then compare frequency of both and check for accidental phase change.

In my opinion its most likely the phase change.

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Users who posted comments:

claritysable (1); Farhan Javed (1); kvsridhar (2); lyn (3); RVZ717 (1); Sapper (1); surenhar (1); Yuri B. (1)

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