Previous in Forum: Characteristic Impedance   Next in Forum: Slip Ring Induction Motors and Salt Water
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
4 comments
Rate Comments: Nested
ronald A.
Active Contributor

Join Date: Mar 2010
Posts: 22

Neutral Ground Resistor (NGR)

03/10/2010 9:01 AM

could someone please help me to give calculation formula of Neutral Ground resistor.
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Anonymous Poster
#2
In reply to #1

Re: Neutral Ground Resistor (NGR)

03/11/2010 1:30 PM

Choose 20 ohm, 1000 A
Register to Reply
angelayanmei
Participant

Join Date: Mar 2011
Location: China
Posts: 4
#3

Re: Neutral Ground Resistor (NGR)

05/27/2011 3:56 AM

Hello the resistor value is determied the max. fault current you want the NGR to limit to and the line-neutral voltage. And then the resistor value is coming out by deviding voltage by fault current. Hope it is helpful to you
Register to Reply
Rajesh52
Associate

Join Date: Jun 2019
Posts: 50
Good Answers: 1
#4

Re: Neutral Ground Resistor (NGR)

07/22/2019 2:50 AM

The Neutral ground resistor (NGR) is connected between the neutral point of the transformer and earth. It limits the fault current during earth fault to the safe value to the equipment current carrying capacity.

For detailed calculation the below given link can be referred.

NGR Resistance Value Calculation
Register to Reply
Register to Reply
Have a Different Question?
4 comments
Copy to Clipboard

Users who posted comments:

angelayanmei (1); Anonymous Poster (2); Rajesh52 (1)

Previous in Forum: Characteristic Impedance   Next in Forum: Slip Ring Induction Motors and Salt Water

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