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Anonymous Poster

LOW VOLTAGE

04/27/2009 8:43 AM

My dear engrs, I've problem of low voltage from public power supply. meanwhile the factory is on 33KV. we have tapped set our transformer to the maximum, thought, the problem is from transmission station. As we all know the effect of low voltage on induction motor. Is there anything I can do to improve the overall supply.Our average demand is about 1200KVA.

Thanks

Clement from Nigeria.
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wareagle
Guru
United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
Posts: 1604
Good Answers: 63
#1

Re: LOW VOLTAGE

04/27/2009 11:59 AM

1. what size is your transformer

2. what is your voltage reading at peak load and at light load.

3. what is your power factor

4. are you billed on a kva demand.

You may have to install a regulator

SOMETHING LIKE THIS http://www.energy.siemens.com/cms/us/US_Products/Portfolio/VoltageRegulators/Pages/VoltageRegulators.aspx
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rajendra.kamble
Member

Join Date: Mar 2009
Posts: 9
Good Answers: 1
#2

Re: LOW VOLTAGE

04/28/2009 1:42 AM

1) Check the permissible voltage variation of your supply company. If that is beyond the permissible limits then you can complaint them officially.

2) After discussing with your supply company you can change the tapping of your transformer appropiately as per the requirement.
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pnaban
Guru

Join Date: Jun 2010
Location: srilanka
Posts: 2725
Good Answers: 5
#3

Re: LOW VOLTAGE

11/07/2011 2:05 AM

Give more details: MVA of transformer,type of starter for IM,other connected loads,pfcc etc

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