Previous in Forum: Contactor Electrical Maintenance in Practice   Next in Forum: How to Check IGBT of ACS 600 of ABB
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
Kudremukh
Member

Join Date: Apr 2009
Posts: 9

What is Earthing Transformer

04/24/2009 8:33 AM

What is Earthing transformer. In our substation we have star\delta main transformer.

and also provided with earthing transformer in secondary of main transformer. Please tell me why it is used. How it protects from faults

Kishore Kumar
Register to Reply
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".
3
msamad
Guru

Join Date: Feb 2009
Location: Houston, USA
Posts: 946
Good Answers: 244
#1

Re: What is Earthing Transformer

04/24/2009 1:56 PM

The Delta side of the transformer doesn't have the neutral. If you need the neutral in the Delta side of a transformer, you need to use the Earthing (or Grounding) transformer. It is basically a zigzag transformer. Please see the link to get some more information:

http://www.qualitypower.co.in/earthing-transformers.php

-MS

__________________
 "All my technical advices in this forum must be consulted with and approved by a local registered professional engineer before implementation" - Mohammed Samad (Linkedin Profile: http://www.linkedin.com/in/msamad)
Register to Reply Good Answer (Score 3)
No more Good Answers.
Kudremukh
Member

Join Date: Apr 2009
Posts: 9
#2
In reply to #1

Re: What is Earthing Transformer

04/24/2009 9:20 PM

Thank you for your reply. It is really useful.
Register to Reply
manir_b4u2002
Associate
India - Member - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Feb 2009
Posts: 38
#3

Re: What is Earthing Transformer

05/02/2009 7:35 AM

As you have,no neutral point in your sec. side,earthing trafo. can provide you artificial neutral for single line to ground fault protection.Some system also allow NGR to reduce the Single line to groung fault current.
Register to Reply
Register to Reply
Have a Different Question?
3 comments

Good Answers:

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

Users who posted comments:

Kudremukh (1); manir_b4u2002 (1); msamad (1)

Previous in Forum: Contactor Electrical Maintenance in Practice   Next in Forum: How to Check IGBT of ACS 600 of ABB

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 (54 right now)
Show Members
Advertisement