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IEEE C57.12.11-1980

Current Revision

IEEE Guide for Installation of Oil-Immersed Transformers (10 MVA and Larger, 69-287 kV Rating)

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New IEEE Standard - Superseded. New, large, oil-immersed power transformers with high-voltage windings rated 69--287 kV inclusive are primarily considered. Inspection on receipt, internal inspection, handling, assembly of fittings, vacuum treatment, filling with oil, tests, and field drying are covered. Appropriate sections of the guide may be applied to lower-voltage transformers when similar conditions and similar transformer construction exist, and may also be used in servicing older transformers that have been opened for maintenance or repair work.
The recommendations presented in this guide primarily apply to new large oil-immersed power transformers with high-voltage windings rated 69-287 kV inclusive. However, appropriate sections of the guide may be applied to lower voltage transformers when similar conditions and similar transformer construction exist, and may also be used in servicing older transformers which have been opened for maintenance or repair work. Increasing application of larger capacity high-voltage transformers with reduced insulation has brought forth the parallel need for increasing care during installation and service. To maintain dielectric strength of the insulation it is essential to avoid moisture and entrapped air or gas bubbles. Since oil is an essential portion of the insulation structure, oil quality and care in handling are extremely import ant .

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.12.11
Publication Date Nov. 7, 1980
Language en - English
Page Count 20
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
Nov. 7, 1980 C57.12.11-1980 Revision