Previous in Forum: Speed and Angels   Next in Forum: Wattage Required to Heat Acid
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
Anonymous Poster

Voltage Fluctuations

05/20/2009 3:21 AM

A load survey was conducted to establish a recurring voltage fluctuation problem at a factory feeding from a 3 phase 750 kVA 415/240 Volts transformer. During off-peak hours, the voltage records +15 to 20% of the nominal voltage while during peak hours it records -15 to 20% of the nominal voltage.

What could be to cause of this and how do we alleviate this problem?

Thank You

Saida
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#1

Re: Voltage Fluctuations

05/20/2009 3:29 AM

Either the load fluctuations are large in comparison with the transformer's rating, or the transformer's supply cabling.

2 options come to mind:

  1. Reduce the load on the transformer.
  2. Increase the size of the transformer and/or its feeder system.
__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Reply
Saida
Participant

Join Date: May 2009
Posts: 3
#2
In reply to #1

Re: Voltage Fluctuations

05/26/2009 6:14 AM

Thanks,

Saida
Reply
Reply to Forum Thread
Have a Different Question?
2 comments

Previous in Forum: Speed and Angels   Next in Forum: Wattage Required to Heat Acid

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
General Discussion:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (79 right now)
Show Members
Advertisement