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Join Date: Mar 2013
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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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Guru
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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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Join Date: Mar 2013
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#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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Power-User

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#2

Re: differential relay setting

03/15/2013 6:20 AM
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Guru

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#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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