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Details

PB95139416

Publication Date	1992
Personal Author	Watson, H.
Page Count	65
Abstract	Insulating liquids used in transformers, circuit breakers, and high-voltage bushings require proper testing and maintenance to keep them in good condition. Liquid insulation can be grouped into three broad categories, (a) mineral oils derived from petroleum, (b) nonflammable, synthetic liquids containing PCB's (polychlorinated biphenyls) commonly called askarels, or any of many trade names for askarel, and (c) several new synthetic liquids being offered as a substitute for askarel. Gas-in-oil analysis of mineral oils can provide early detection of developing problems. Too frequently, the testing and purifying of liquid insulation is done without due regard to certain important precautions. The purpose of this chapter is to give a better understanding of the characteristics of insulating liquids and to establish uniform maintenance practices for tests and treatment.
Keywords	Insulation Liquids Maintenance Mineral oils Synthetic oils Polychlorinated biphenyls Insulating oil Characteristics Deterioration Tests Reconditioning Reclamation Oxidation resistance Safe handling Disposal Transformers Circuit breakers Bushings Askarels
Source Agency	Bureau of Reclamation
NTIS Subject Category	71K - Lubricants & Hydraulic Fluids 71L - Materials Degradation & Fouling
Corporate Authors	Bureau of Reclamation, Denver, CO. Engineering Div.
Document Type	Technical Report
NTIS Issue Number	199504

Maintenance of Liquid Insulation Mineral Oils and Askarels: Facilities Instructions, Standards, and Techniques. Volume 3-5.

Maintenance of Liquid Insulation Mineral Oils and Askarels: Facilities Instructions, Standards, and Techniques. Volume 3-5.
PB95139416

Publication Date	1992
Personal Author	Watson, H.
Page Count	65
Abstract	Insulating liquids used in transformers, circuit breakers, and high-voltage bushings require proper testing and maintenance to keep them in good condition. Liquid insulation can be grouped into three broad categories, (a) mineral oils derived from petroleum, (b) nonflammable, synthetic liquids containing PCB's (polychlorinated biphenyls) commonly called askarels, or any of many trade names for askarel, and (c) several new synthetic liquids being offered as a substitute for askarel. Gas-in-oil analysis of mineral oils can provide early detection of developing problems. Too frequently, the testing and purifying of liquid insulation is done without due regard to certain important precautions. The purpose of this chapter is to give a better understanding of the characteristics of insulating liquids and to establish uniform maintenance practices for tests and treatment.
Keywords	Insulation Liquids Maintenance Mineral oils Synthetic oils Polychlorinated biphenyls Insulating oil Characteristics Deterioration Tests Reconditioning Reclamation Oxidation resistance Safe handling Disposal Transformers Circuit breakers Bushings Askarels
Source Agency	Bureau of Reclamation
NTIS Subject Category	71K - Lubricants & Hydraulic Fluids 71L - Materials Degradation & Fouling
Corporate Authors	Bureau of Reclamation, Denver, CO. Engineering Div.
Document Type	Technical Report
NTIS Issue Number	199504