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Anonymous Poster #1

How to Repair a Small Leak in a Transformer Oil Cooling Radiator?

03/04/2017 2:14 AM

Have you got any tested and useful recommendation for pressurized or non pressurized leakages?

Thanks in advance.

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#1

Re: How to repair a small leak in a transformer oil cooling radiator?

03/04/2017 2:35 AM
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#2
In reply to #1

Re: How to repair a small leak in a transformer oil cooling radiator?

03/04/2017 2:49 AM

We did but it didn't work.

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Anonymous Poster #1
#3
In reply to #2

Re: How to repair a small leak in a transformer oil cooling radiator?

03/04/2017 7:50 AM

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#4
In reply to #1

Re: How to repair a small leak in a transformer oil cooling radiator?

03/04/2017 12:18 PM

Sometimes it's hard to degrease the spot effectively because it's leaking too quickly to maintain a dry surface....If this is the case you need to do it the hard way by taking the transformer out of service and welding the leak up and/or replacing all the gaskets doing a full service...

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#8
In reply to #1

Re: How to repair a small leak in a transformer oil cooling radiator?

03/06/2017 4:33 AM

I first used Belzona in the power generation industry, a long time ago. The key is the KEY, Proper Preparation Prevents P Poor Performance, and part of that is identifying which Belzona product you need.

Still use Belzona professionally, but JBweld as I use for 'home' repairs is probably just as good for this type of temporary 'patch job'. If it's leaking why is it leaking, is it internal corrosion thats creeping further?

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Anonymous Poster #2
#5

Re: How to repair a small leak in a transformer oil cooling radiator?

03/04/2017 5:58 PM

Bazooka Joe to the rescue?

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#6

Re: How to repair a small leak in a transformer oil cooling radiator?

03/05/2017 10:35 AM

It would help if you told us the type and where the leak is located; i.e., weld, gasket, fin, pipe, puncture, weeping, dripping, flowing, etc., etc., since each has its own set of problems and possible solutions.

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#7

Re: How to Repair a Small Leak in a Transformer Oil Cooling Radiator?

03/05/2017 2:10 PM

We had the same problem when we put in service the new substation during the final construction phase of the Regional hospitals at our location (Puerto Rico) and the transformer manufacturer solution was utilizing a special epoxy formulation they used for this sort of repair. It was repaired with the epoxy, following the manufacturer recommendations, and the problem was solved. These were large oil indoor type transformers manufactured by GE. In any case consult GE or your particular manufacturer for the recommended epoxy formulation and application procedure.

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#9

Re: How to Repair a Small Leak in a Transformer Oil Cooling Radiator?

03/06/2017 4:06 PM

If you're a shade tree mechanic, sheet metal screws worked well in the old steel gasoline tanks.

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#10
In reply to #9

Re: How to Repair a Small Leak in a Transformer Oil Cooling Radiator?

03/06/2017 8:47 PM

True, but metal chips from the thread-cutting screws can find their way into the windings via the circulating insulating oil, releasing copious quantities of magic smoke.

Any process that has the potential to release metal chips, filings, etc. is a bad idea.

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#11
In reply to #10

Re: How to Repair a Small Leak in a Transformer Oil Cooling Radiator?

03/07/2017 1:22 PM

Oh, yeah. Perfectly valid point. Mine was a bit tongue in cheek, if you will.

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#12
In reply to #11

Re: How to Repair a Small Leak in a Transformer Oil Cooling Radiator?

03/07/2017 2:04 PM

I've seen it done, and the damage that subsequently occurred from the chips...

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#13
In reply to #12

Re: How to Repair a Small Leak in a Transformer Oil Cooling Radiator?

03/07/2017 2:50 PM

What kind of leakages are they used for? Should the part to be treated be oil-free to open screw thread?

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