How often the transformer oil should be treated ?
How often the transformer oil should be treated ?
(OP)
One of my clients filters the oil of all his running transformers every year religiously. Is it necessary ?
I advised him to do DGA / BDV instead every year to assess the condition of the oil (e.g. moisture content > 30 ppm) instead of filtering/treating the oil by rote. What do the trafo experts think ?
I advised him to do DGA / BDV instead every year to assess the condition of the oil (e.g. moisture content > 30 ppm) instead of filtering/treating the oil by rote. What do the trafo experts think ?






RE: How often the transformer oil should be treated ?
RE: How often the transformer oil should be treated ?
Annual filtering is probably more than what is required.
RE: How often the transformer oil should be treated ?
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If we learn from our mistakes I'm getting a great education!
RE: How often the transformer oil should be treated ?
Is there any standard that specifies a standard frequency of oil filtering ?
Which standard specifies the test parameters for dielectric strength test (Break-Down Voltage - BDV test) ?
I am looking for like gap settings, rate of voltage rise, acceptable breakdown voltage etc.
RE: How often the transformer oil should be treated ?
You can refer to following standards on oil maintenance
1)IEC 60442 of 2005-10 2) IEEE C57.106-2006 3)IEEE C 57.140-2006 Guide for evaluation and reconditioning of liquid filled transformers.
RE: How often the transformer oil should be treated ?
In case of high but stable DGA values, how to remove those damn gases ? From our earlier conversation on DGA values, I kinda thought oil filteration would remove the DG's along with water. Am I wrong ?
RE: How often the transformer oil should be treated ?
If you are looking for a standard to wave in front of you client, IEEE C57.106 (Guide for Acceptance and Maintenance of Insulating Oil in Equipment) may be of some use. Actual procedures for carrying out the tests are as per various ASTM standards, ASTM 1816 for dielectric breakdown strength.
I'm afraid my copies of the above are 11,000 km away at the moment, so I can't provide any specifics.
RE: How often the transformer oil should be treated ?
I am asking these questions for personal edification. Then I can do all the waving & weaving in front of my clients :).
RE: How often the transformer oil should be treated ?
RE: How often the transformer oil should be treated ?