This specification covers two types of new mineral insulating oils of petroleum origin for use as an insulating and cooling medium in new and existing power and distribution electrical apparatus, such as transformers, regulators, reactors, circuit breakers, switchgear, and attendant equipment. It...

1.1 This test method covers the detection and estimation of combustible gases in the gas blanket above the oil or in gas detector relays in transformers using portable field instruments. It is applicable only with transformers using mineral oil as the dielectric fluid. Gases dissolved in the oil ...

1.1 This practice is used for sampling gas from a transformer gas space or from a gas-collector relay where the volume of gas available is small and will not permit the use of Practice D2759.

1.2 This practice covers sampling, using a gas-tight syringe as the sampling apparatus and conta...

1.1 This specification covers the chemical and mechanical requirements of hexagon and square-head zinc-coated steel bolts and atmospheric corrosion-resistant bolts, in nominal thread diameters of ¹/₂ ⁵/₈, <spa...

1.1 This practice covers the sampling of gas above the insulating liquid of a transformer. A gas sampling bottle collects the gas sample from the gas space that is at a positive pressure.

1.2 Representative samples of gas are taken for analysis to determine their co...