Transformer oil analysis

About This Service

Transformer oil analyzing acts as an early warning system but also help us to understand the inner health of the transformer without disrupting its operation. The transformer oil not only serves as a heat transfer medium; it also is a part of the transformer’s insulation system. Therefore, it is sensible to occasionally perform tests on the oil to determine whether it is proficient in pleasing its role as an insulant.  Sampling is carried out in the laboratory in full compliance with the requirements of IEC 60475-2014, IEC 60567-2005 and RD 34.46.303-98. All tests are carried out with high accuracy and conformity with the necessary safety measures. Our staff adheres to all principles in accordance with environmental laws.

Definition of electrical insulating properties

  • Breakdown voltage – GOST 6581-75, ASTM D1816-12(2019), IEC 60156:2018
  • Dielectric dissipation factor – GOST 6581-75, ASTM D924-15

Definition of physical characteristics

  • Density – GOST 3900-85, ASTM D1298-12b, ISO 3675:1998
  • Color – ASTM D1500, GOST ISO 2049-2015, GOST 33092-2014
  • Appearance of liquids – ASTM E2680-16
  • Kinematic and dynamic viscosity – GOST 33-2016, ISO 3104-94, ASTM D445-17
  • Viscosity index – GOST 25371-2018, ASTM D2270-10, GOST 32500-2013
  • Refractive index – GOST 18995.2-73, ASTM D1807-00(2005)e1
  • Content of mechanical impurities – GOST 6370-2018, ISO 4407-2006, ISO 4406-1999, IEC 60422 Annex C.1
  • Flash point – GOST 6356-75, GOST ISO 2719-2013, ASTM D93-19

Definition of physicochemical characteristics

  • Dissolved gas analysis (DGA) – RD 34.46.303-98, IEC 60599:2015
  • Water content – GOST IEC 60814-2013, ASTM D1533-12, RD 34.43.107-95, GOST 24614-81, GOST 7822-75, GOST R 54281-2010, ASTM D95-13, GOST 32055-2013
  • Acidity – GOST 5985-79, ASTM D1534-95(2017)
  • Interfacial tension – GOST R 55413-2013, ASTM D 971-20, ISO 6295:1983
  • Inhibitor (ionol) content – МКХА i 01-99, STO 56947007-29.180.010.008-2008, IEC 60666-2010
  • Sludge content – RD 34.43.105-89, ASTM D1698-03(2008)
  • Water-soluble acids and bases – GOST 6307-75
  • Corrosive effects– GOST 2917-76, GOST 32329-2013, ASTM D130-12
  • Content of furan derivatives – МКХАf 01-99, STO 56947007-29.180.010.009-2008
  • Carbon-type composition – ASTM D 2140-08
  • Determination of elements by inductively coupled   plasma atomic emission spectrometry (ICP-AES) – ASTM D7151-15, GOST 34242-2017, ASTM D5185-13
  • Water separability – ASTM D1401-12, GOST ISO 6614-2013
  • Average viscometric degree of polymerization of cellulosic materials – ASTM D4243-16, IEC 60450-2007, GOST 9105-74
  • Methanol and ethanol content – IEC TR 63025:2021, ASTM D8086-20
  • Sodium probe – GOST 19296-73

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