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Electric transformers --- Transformers, Electric --- Electric currents --- Electric machinery --- Electric motors
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This standard is intended for use as a basis for establishing the performance, electrical and mechanical interchangeability, and safety of the equipment covered, and to assist in the proper selection of such equipment. Keywords: copper-bearing steel, impedance, submersible, tank, tap charger, temperature, threephase, transformer.
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Electric transformers --- Transformers, Electric --- Electric currents --- Electric machinery --- Electric motors --- Standards.
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Large, oil-immersed power transformers with high-voltage windings rated 345 kV and above are considered. Inspection on receipt, internal inspection at the site, preliminary oil filling, assembly, vacuum treatment and final filling, vacuum drying of insulation, recirculation, and energization are covered.
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Measures that may be taken to help mitigate tank rupture of energized liquid-immersed power transformers and reactors due to internal electrical faults are described in this guide. The release of insulating fluid or insulating fluid mist due to failure of the following components are not covered in this guide: load tap changer compartments, bushings and their turrets, conservator tank, piping, valves, pumps, and radiators.
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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 is to assist the transformer operator in receiving new fluids, filling transformers, and maintaining the fluids in serviceable condition.
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Clarified in this corrigendum to IEEE Std C57.163(TM)-2015 is the derivation of the tie plate temperatures shown in Figure 13.
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General test procedures for performing routine quality control tests that are suitable for high-volume, production line testing are included in this recommended practice. Transformer connections, test methods, circuit configurations, and failure detection methods are addressed. This recommended practice covers liquid-immersed, single- and three-phase distribution transformers.
Electric transformers --- Transformers, Electric --- Electric currents --- Electric machinery --- Electric motors --- Standards.
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