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sethuamanj
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Join Date: Mar 2013
Posts: 14

Differential Relay Setting - Argus 7SR242

03/15/2013 1:09 AM

hello engineers, can anybody explain how to calculate differential relay setting for 4MVA transformer. the restrain current, operating current the relay model is argus 7sr242. looking for your valuable response..thank you
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PWSlack
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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.
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#1

Re: differential relay setting

03/15/2013 5:42 AM

The best person to talk to is probably the technical helpline assistant at the transformer manufacturer's premises, if indeed the explanation cannot be found in the Operation and Maintenance Manual that was supplied with it. Heck - the helpline could probably supply a duplicate manual if it has gone AWOL.

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sethuamanj
Active Contributor

Join Date: Mar 2013
Posts: 14
#4
In reply to #1

Re: differential relay setting

03/16/2013 4:58 AM

hai... thanks for ur reply guru.. but what kind of information can the transformer manufacture give for differential relay setting? do u mean the transformer impedance??/ may be my question is wrong can u explain bit more...
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nobodysomebody47
Power-User

Join Date: Nov 2011
Posts: 171
Good Answers: 1
#2

Re: differential relay setting

03/15/2013 6:20 AM

Check this,

All about Differential Relay

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PeterT
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Join Date: May 2010
Location: Liverpool, NY
Posts: 961
Good Answers: 131
#3

Re: Differential Relay Setting - Argus 7SR242

03/15/2013 3:23 PM

The relay's instruction manual should guide you, but this can help also:

http://www.gedigitalenergy.com/multilin/notes/artsci/art11.pdf

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