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IEEE PC57.166
IEEE Approved Draft Guide for Acceptance and Maintenance of Insulating Liquids in Transformers and Related Equipment
Translate name
STANDARD published on 24.6.2026
The information about the standard:
Designation standards: IEEE PC57.166
Publication date standards: 24.6.2026
SKU: NS-1267068
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Category: Technical standards IEEE
Annotation of standard text IEEE PC57.166 :
New IEEE Standard - Active - Draft.
Recommendations are made regarding tests and evaluation procedures of insulating liquids; references are made to methods of reconditioning and reclaiming insulating liquids; the levels at which these methods become necessary. The intent is to assist the power equipment operator in evaluating the serviceability of liquid insulation received in equipment, as received from the supplier for filling new equipment at the installation site, and as processed into such equipment; and to assist the operator in maintaining the insulating liquid in serviceable condition. The insulating liquids covered are used in transformers, reactors, load tap changers, and voltage regulators
ISBN: 979-8-8557-3081-4, 979-8-8557-3081-4
Number of Pages: 97
Product Code: STDUD28616, STDAPE28616
Keywords: insulating liquids, liquids, mineral oil, ester, natural ester, synthetic ester, silicone, transformer, load tap changer, maintenance, reconditioning, reclaiming
Category: Transformers
Draft Number: PC57.166/D7, Jan 2026 - UNAPPROVED DRAFT, PC57.166/D7, Jan 2026 - APPROVED DRAFT
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