Elemech Labs Pvt. Ltd.

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Transformer & Insulating Oil Testing (Outsource)

We offer consultancy services for Transformer Oil Testing, It’s methods are a vital part of any maintenance program. An annual DGA is the most crucial test for the liquid lining. Analysis of gases in the oil can specify insulation overheating/ overloading, corona discharge, liquid overheating, or arcing in the transformer. The screen test comprises additional physical, chemical, and electrical tests; this includes power factor, interfacial tension, acidity, colour, and dielectric breakdown. No single test alone can indicate the authentic stature of the liquid. Thus, it is necessary to perform all the tests. Furthermore, a useful test is performed by transformer oil labs that include those for water content, PCBs furanic compounds, and metals-in-oil.

What is transformer oil testing?

Transformer oil testing is a method of measuring breakdown voltage and various chemical and physical properties of the transformer oil, either in the laboratory or by using any sort of portable test equipment on site.

What are oil transformer testing methods?
  • Breakdown Voltage Test (BDV)
  • Colour and Appearance Test (IS335; ASTM D-1524)
  • Water content or Moisture Test (IS1356; ASTM-D-1533B)
  • Specific Resistance Test (IS6103; ASTM-D-924)
  • Dissolved gas analysis (IS9434; ASTM-D-3612-A)
  • Furan analysis (ASTM-D-5837)
IS Codes Of Transformer Oil Tests:
Sr .No.TESTSIECASTMIS
1Colour & AppearanceISO 2049 D-1524 IS 335
2Inter Facial Tension ISO 6295 D-971IS 6104
3ViscosityISO 3104 D-445 IS 1448 [P-25]
4Flash Point IEC 2719 D-92 IS 1448
5Pour Point ISO 3016 D-97 IS 1448
6Water  Content IEC 60814 D-1533 B IS 13567
7AcidityIEC 62021 D-974IS 1448 [P-2]
8Dielectric strength IEC 60156 D-877IS 6792
9Specific Resistance IEC 60247 D-924IS 6103
10Dielectric Dissipation Factor IEC 60247 D-924 IS 6262
11Dissolved gas analysis NAD-3612-AIS 9434
12Furan analysis IEC 61198 D-5837 ----
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