A test procedure (Combination of IEEE Std 275™-1992 and IEEE Std 429™-1994) for comparing two or more insulation systems in accordance with their expected life at rated temperature is outlined. The procedure is limited to insulation systems for alternating-current (ac) electrical machines using form-wound pre-insulated stator coils rated 15000 V and below
- Sponsor Committee
- PE/EM - Electric Machinery
Learn More - Status
- Inactive-Reserved Standard
- PAR Approval
- 2007-12-05
- Board Approval
- 2008-12-10
- History
-
- Published:
- 2009-02-13
- Inactivated Date:
- 2021-03-25
Working Group Details
- Society
- IEEE Power and Energy Society
Learn More - Sponsor Committee
- PE/EM - Electric Machinery
Learn More - Working Group
-
Matl - WG1776 - Materials SC - Thermal Evaluation of Insulation Systems
Learn More - IEEE Program Manager
- Malia Zaman
Contact - Working Group Chair
- William Chen
P1776
Recommended Practice for Thermal Evaluation of Unsealed or Sealed Insulation Systems for AC Electric Machinery Employing Form-Wound Pre-Insulated Stator Coils for Machines Rated 15 000 V and Below
This recommended practice outlines test procedures for comparing two or more unsealed or sealed insulation systems in accordance with their expected life at rated temperature. The procedure is limited to insulation systems for AC electrical machines using form-wound pre-insulated stator coils rated 15 000 V and below. The intent of this test procedure is to evaluate unsealed insulation systems for use with air cooling under usual (normal) service conditions, or sealed insulation systems for use under severe environmental conditions (where the insulation is exposed to conducting contaminants). This procedure does not cover special requirements, such as those for machines enclosed in gas atmospheres or machines subjected to strong chemicals, metal dust or submersion in liquid, etc. The procedure includes instructions for testing candidate systems in comparison with known reference systems, of the same type, having a proven record of service experience and interpreting the results of these tests. The intent of this test procedure is to evaluate unsealed insulation systems for use with ir cooling under usual (normal) service conditions, or sealed insulation systems for use under severe environmental conditions (where the insulation is exposed to conducting contaminants). This procedure does not cover special requirements, such as those for machines enclosed in gas atmospheres or machines subjected to strong chemicals, metal dust or submersion in liquid, etc. The procedure includes instructions for testing candidate systems in comparison with known reference systems, of the same type, having a proven record of service experience and interpreting the results of these tests.
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No Inactive-Reserved Standards