GB/T 46134-2025 Natural esters—Guidelines for maintenance and use in electrical equipment

GB/T 507-2002 Insulating liquids—Determination of the breakdown voltage at power frequency GB/T 1884-2000 Crude petroleum and liquid petroleum products—Laboratory determination of density—Hydrometer method GB/T 3535-1983 Petroleum oils—Determination of pour point GB/T 3535-2006 Petroleum products—Determination of pour point GB/T 3536-1983 Petroleum products—Determination of flash and fire points—Cleveland open cup method GB/T 3536-2008 Petroleum products—Determination of flash and fire points—Cleveland open cup method GB/T 5654-1985 Measurement of relative permittivity, dielectric dissipation factor at power frequency and volume resistivity of insulating liquids GB/T 5654-2007 Insulating liquids—Measurement of relative permittivity,dielectric dissipation factor and d.c.resistivity GB/T 6540-1986 Petroleum products—Determination of colour GB/T 6541-1986 Petroleum products—Mineral oils—Determination of interfacial tension of oil against water—Ring method GB/T 14542-1993 Guide for maintenance and supervision of transformer oil in service GB/T 14542-2005 Guide for maintenance and supervision of transformer oil in service GB/T 14542-2017 Guide for maintenance and supervision of transformer oil GB/T 17623-1998 Determination of componental contents of gases dissolved in insulating oil by gas chromatography method GB/T 17623-2017 Determination of componental contents of gases dissolvedin insulating oil by gas chromatography method GB/T 30515-2014 Petroleum products—Transparent and opaque liquids—Determination of kinematic viscosity and calculation of dynamic viscosity GB/T 41146-2021 Method of sampling insulating liquids GB/T 41633.3-2022 Insulating liquids—Determination of acidity—Part 3:Test methods for non-mineral insulating oils GB/T 44378-2024 Insulating liquids—Methods for counting and sizing particles DL/T 1811-2018 Guidelines for selecting natural ester insulating oil for power transformers NB/SH/T 0802-2019 Determination of 2,6-Di-tert-butyl-p-cresol in insulating oil by infrared spectroscopy NB/SH/T 0811-2023 Insulation oil oxidation stability test method NB/SH/T 0811-2010 The method for determining the oxidative stability of unused hydrocarbon insulating oil NB/T 10199-2019 Electrician Fluid, Unused Natural Esters for Transformers and Similar Electrical Equipment NB/T 42140-2017 NB/T 42140-2017 Insulation liquid: Automatic Karl Fischer titration method for determination of moisture in oil-immersed paper and paperboard SH/T 0604-2000 Crude petroleum and petroleum products--Determination of density--Oscillationg U-tube method IEC 63177 ASTM D1544 GB/T 3535-2025 Determination of pour point for petroleum products GB/T 6540-2025 Determination for colour of petroleum products

IEC 62975:2021