Previous in Forum: Low Battery To Genset Switch   Next in Forum: Photovoltaic (Distributed Generation)
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
nm_nid
Active Contributor

Join Date: Feb 2011
Posts: 15

Ratings of Transformer and Generator

08/28/2011 12:23 PM

Why transformer ratings in VA (i.e. apparent power) while generators can be rated in both VA as well as Watts ?

Is reactive power important for both? coz reactive power can never come into picture if load is pure resistive??
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#1

Re: Ratings of Transformer and Generator

08/29/2011 12:37 AM

For a genset, the VA rating pertains to the generator; whereas the KW (or HP) rating pertains to the engine. In other words, both an electrical and a mechanical rating; but the tranformer needs only an electrical rating.

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply
harry potter
Power-User

Join Date: Nov 2008
Location: India
Posts: 333
Good Answers: 6
#2
In reply to #1

Re: Ratings of Transformer and Generator

08/29/2011 6:06 AM

Yes, its true.

Transformer size is restricted by the temperature rise of the winding & insulation ( normally oil filled transformers , temp. rise limits are 45 deg. above Amb. of

40 deg.C) this is represented by VA rating.

__________________
 Exploring the Science of Electricity
Register to Reply
nm_nid
Active Contributor

Join Date: Feb 2011
Posts: 15
#3
In reply to #2

Re: Ratings of Transformer and Generator

04/14/2012 4:25 AM

what about protection against overfluxing?

why protection is provided for it, as it can be controlled by just changing the material of core?
Register to Reply Off Topic (Score 6)
Register to Reply
Have a Different Question?
3 comments
Copy to Clipboard

Users who posted comments:

harry potter (1); nm_nid (1); Tornado (1)

Previous in Forum: Low Battery To Genset Switch   Next in Forum: Photovoltaic (Distributed Generation)

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 (63 right now)
Show Members
Advertisement