Previous in Forum: Solar Power   Next in Forum: Transformer Conversion
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
3 comments
Rate Comments: Nested
Rooney
Associate

Join Date: Jun 2009
Posts: 49

Static Neutral Compensator

08/31/2009 7:01 AM

Dear All,

I have heard that a device called Static Neutral Compensator for plant lighting feeder is used to minimise the current in the neutral phase and gives potential savings.

Is it true??

If yes then,

1. How much current is safe to flow in the neutral phase?

2.What is the principle of operation of a Static Neutral Compensator?

3.How much savings can it guarantee?

4.It there something to be done with the unbalance in the phase currents/ phase voltages?

Require your expert comments.

Thanks in advance

Regards
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
wareagle
Guru
United States - Member - New Member

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

Re: Static Neutral Compensator

08/31/2009 10:58 AM

Google Static Neutral Compensator.

One hit is a mfg that will answer all you questions.
Register to Reply
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
#2

Re: Static Neutral Compensator

09/01/2009 3:04 AM

<...How much current is safe to flow in the neutral phase?...>

The neutral current can never be greater than the largest of the three phase currents, and will always be the vector sum of all three except under earth fault conditions.

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Anonymous Poster
#3

Re: Static Neutral Compensator

09/01/2009 10:33 AM

Switch mode power supplies can impose a nearly invisible high frequency load current on the neutral conductor, and where ever there is a situation dominated by such supplies(computer processing,servers, etc.) the neutral should be doubled in size from the normal calculated size.A regular amp meter will not show this current, but the neutral can burn up becasue of this.A special meter is available to measure these high frequency currents.Some solid state lighting ballasts also use this type of power supply.
Register to Reply
Register to Reply
Have a Different Question?
3 comments
Copy to Clipboard

Users who posted comments:

Anonymous Poster (1); PWSlack (1); wareagle (1)

Previous in Forum: Solar Power   Next in Forum: Transformer Conversion

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
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 (59 right now)
Show Members
Advertisement