Previous in Forum: Busbars calculation   Next in Forum: MCB
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
dmtonyole
Commentator

Join Date: Dec 2006
Posts: 77

Low Voltage Output from the Generator

05/03/2011 1:12 AM

Hi

Could any one help, we have a generator which produce a low voltage of 68V instead of 380V, we tried to change AVR but still the problem persist. Waiting to hear from you.

Regards

Mtonyole
Register to Reply
Pathfinder Tags: Generator low voltage
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Good Answers:

These comments received enough positive votes to make them "good answers".
4
pravinba
Associate

Join Date: Apr 2011
Location: Abu Dhabi, UAE
Posts: 25
Good Answers: 2
#1

Re: LOW VOLTAGE OUTPUT FROM THE GENERATOR

05/03/2011 4:11 AM

1.Check the exciter field winding healthiness.

2. Open the inspection cover and check the healthiness of the rectifiers fitted on the exciter rotor.

3. Check the Generator field winding.

4. Where did you measure the voltage? Try to measure from the generator main terminals. There can be problem in the measuring circuit... like blown PT fuses.

5. Is it a new generator or was it working ok previously ?
Register to Reply Good Answer (Score 4)
No more Good Answers.
dmtonyole
Commentator

Join Date: Dec 2006
Posts: 77
#2
In reply to #1

Re: LOW VOLTAGE OUTPUT FROM THE GENERATOR

05/03/2011 11:57 PM

Thanks for your comments

1. The exciter field windings reads infinity resistance (open circuit)

2. We compared with another generator of the same type which reads 0.8ohm and 0.5ohms (continuity).

3. This shows that the field winding is not health.
Register to Reply
Register to Reply
Have a Different Question?
2 comments

Good Answers:

These comments received enough positive votes to make them "good answers".

Previous in Forum: Busbars calculation   Next in Forum: MCB

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 (68 right now)
Show Members
Advertisement