Superseded Standard

IEEE 522-1977

IEEE Guide for Testing Turn-to-Turn Insulation on Form-Wound Stator Coils for Alternating-Current Rotating Electric Machines - For Trail Use

Many alternating-current rotating electric machines are designed to have multiturn formwound stator coils. In these cases, the winding has two separate but interrelated insulating barriers: one (turn insulation) between the various turns and the second (ground insulation) between the turns and ground. Failure of either of these barriers will prematurely terminate the service life of the machine. A test level, twice rated voltage plus 1 kV, for the ground insulation has been in existence for many years. This guide suggests methods and test levels for the turn insulation.

Sponsor Committee
PE/EM - Electric Machinery
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Status
Superseded Standard
Superseded by
522-1992
Board Approval
1976-06-03
History
Published:
1977-02-25
Reaffirmed:
1981-01-01

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/EM - Electric Machinery
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