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dhanesh.koshti
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Join Date: May 2009
Location: Mumbai
Posts: 73

How test the Buchholz relay during the maintenance of transformer

10/08/2009 5:42 AM

How test the Buchholz relay during the maintenance of transformer

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Pathfinder Tags: Buchholz relay
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giri
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Good Answers: 2
#1

Re: How test the Buchholz relay during the maintenance of transformer

10/08/2009 10:17 AM

Just open the drain plug at the bottom of the relay,for oil draining ,same time one have to open the airplug given at the top of the relay.oil level inside the relay decreases which was full before.Alarm appears at one point n then trip command occurs......some contain test button which can be pressed for testing of the relay......

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electricalexpert65
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#2

Re: How test the Buchholz relay during the maintenance of transformer

10/08/2009 10:21 AM

We used to use a bicycle pump (hand-operated) to pump in air inside the buch-holz relay to test it.
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Anonymous Poster
#3
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Re: How test the Buchholz relay during the maintenance of transformer

07/29/2010 9:09 AM

We tried using a bicycle pump, the alarm goes on but tripping does not occur.

To test trip , we drain oil from the drain plug. - electrix
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