Superseded Standard

IEEE 275-1981

IEEE Recommended Practice for Thermal Evaluation of Insulation Systems for AC Electric Machinery Employing Form-Wound Pre-Insulated Stator Coils, Machines Rated 6900 V and Below

This standard outlines a test procedure for comparing two or more insulation systems in accordance with their expected life at rated temperature. The procedure is limited to insulation systems for alternating-current electrical machines using form-wound pre-insulated stator coils and rated 6900 V and below. It is the intent of this procedure to evaluate insulation systems for use in usual service conditions with air cooling. It does not cover such special requirements as machines enclosed in gas atmospheres, subjected to strong chemicals, to metal dusts, or to submersion in liquids, etc. The procedure includes instructions for testing candidate systems in comparison with known systems having a proven record of service experience and interpretation of the results.

Sponsor Committee
PE/EM - Electric Machinery
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Status
Superseded Standard
Superseded by
275-1992
Superseding
275-1966
Board Approval
1980-12-18
History
ANSI Approved:
1982-03-30
Published:
1981-05-15

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/EM - Electric Machinery
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No Active Projects
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No Superseded Standards
No Inactive-Withdrawn Standards
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