A method for establishing the dollar value of the electric power needed to supply the losses of a transformer or reactor is provided. Users can use this loss evaluation to…
IEEE C57.121-1988, IEEE Guide for Acceptance and Maintenance of Less Flammable Hydrocarbon Fluid in Transformers, covers the evaluation and handling procedures for less flammable hydrocarbon transformer insulating fluids. Its purpose…
The evaluation and handling procedures for less flammable hydrocarbon transformer insulating fluids are covered. The guide's purpose is to assist the transformer operator in receiving new fluids, filling transformers, and…
Information and general recommendations of instrumentation, circuitry, calibration, and measurement techniques of no-load losses (excluding auxiliary losses), excitation current, and load losses of power and distribution transformers are provided. The…
The detection of partial discharges occurring in the insulation of dry-type transformers or their components and the measurement of the associated apparent charge at the terminals when the alternating test…
A procedure to be used to perform a failure analysis is recommended. The procedure is primarily focused on power transformers used on electrical utility systems, although it may be used…
This guide is applicable to the detection and location of acoustic emissions from partial discharges and other sources in oil immersed power transformers and reactors. It is intended to provide…
Superseded by IEEE Std C57.129-2007. The electrical, mechanical, and physical requirements of oil-immersed single-phase and three-phase converter transformers are specified in this standard. Tests are described and test code defined.…
Electrical and mechanical performance and test requirements for load tap changers installed in power transformers and voltage regulating transformers of all voltage and kVA ratings are covered.
