Inactive-Reserved Standard

IEEE 522-2004

IEEE Guide for Testing Turn Insulation of Form-Wound Stator Coils for Alternating-Current Electric Machines

Revision of IEEE Std 522-1992 Suggestions are made for testing the dielectric strength of the insulation separating the various turns from each other within multiturn form-wound coils to determine their acceptability. Typical ratings of machines employing such coils normally lie within the range of 200 kW to 100 MW (270 hp to 135 000 hp). The test levels described do not evaluate the ability of the turn insulation to withstand abnormal voltage surges, only surges associated with normal operation. The suggestions apply to: (1) individual stator coils after manufacture; (2) coils in completely wound stators; (3) coils and windings for rewinds of used machinery; and (4) windings of machines in service to determine their suitability for further service (preventive-maintenance testing). Coil service conditions, test devices, and test sequence are discussed.

Sponsor Committee
PE/EM - Electric Machinery
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Status
Inactive-Reserved Standard
PAR Approval
2001-12-06
Superseded by
522-2023
Superseding
522-1992
Board Approval
2004-02-09
History
ANSI Approved:
2004-05-12
Published:
2004-08-09
Reaffirmed:
2009-09-11
Inactivated Date:
2021-03-25

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/EM - Electric Machinery
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Working Group
Matl - WG522 - Materials SC - Turn Insulation of Form-Wound Stator Coils
Learn More About Matl - WG522 - Materials SC - Turn Insulation of Form-Wound Stator Coils
IEEE Program Manager
Tom Thompson
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Working Group Chair
Paul Gaberson

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.


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522-2023

IEEE Draft Guide for Testing Turn Insulation of Form-Wound Stator Coils for Alternating-Current Electric Machines

The purpose of this guide is to make suggestions on testing the dielectric strength of the insulation separating the various turns from each other within multiturn form-wound coils to determine the acceptability of the coils. Typical ratings of machines employing such coils normally lie within the range of 200 kW to 100 MW. Test voltage levels described herein do not evaluate the ability of the turn insulation to withstand abnormal voltage surges, as contrasted to surges associated with normal operation. These suggestions apply to: (1) Individual stator coils after manufacture (2) Coils in completely wound stators of original manufacture (3) Coils and windings for rewinds of used machinery (4) Windings of machines in service to determine their suitability for further service (preventive-maintenance testing) The repetitive voltage surges (spikes) associated with Variable Frequency Drives (VFD's) are also not addressed here.

Learn More About 522-2023

These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.


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These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.


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These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.


No Inactive-Reserved Standards
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