IS 12177 : 1987 Methods of Tests for Oxidative Ageing of Electrical Insulating Petroleum Oils by Open Beaker Method

1 Scope

1.1 This test method covers procedure for subjecting electricalinsulating oils to oxidative ageing by:

Method A - with metal catalyst

Method B - without metal catalyst.

1.2 This method is applicable to electrical insulating oils ofpetroleum origin as long as less than 10 percent of the oilevaporates during the ageing procedures. At present it applies andis generally useful primarily in the evaluation and quality controlof unused oils, either inhibited or uninhibited.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 335 :1983Specification for new insulating oils

IS 1070 :1977Specification for water for general laboratoryuse

IS 1448 : Part 2 :1967 Methods of test for petroleum and itsproducts:Part 2 Acidity

IS 6103 :1971Methods of test for specific resistance(resistivity) of electrical insulating liquids

IS 6262 :1971Method of test for power factor and dielectricconstant of electrical insulating liquids

IS 6855 :1973Method of sampling for liquid dielectrics