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IEEE 1310-1996

Historical Revision

IEEE Recommended Practice for Thermal Cycle Testing of Form-Wound Stator Bars and Coils for Large Rotating Machines

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New IEEE Standard - Superseded. A test method to determine the relative ability of high-voltage, form-wound stator bars and coils of large rotating machines to resist deterioration due to rapid heating and cooling resulting from machine load cycling is described.
This procedure is intended for bars/coils for rotating machines rated 11 kV or more at 50 Hz or 60 Hz that are subjected to many transitions from no-load to full-load current during normal operations, and where rapid load variations are typical. Only the thermal cyclic degradation within the groundwall insulation and/or the conductor package and delamination of the groundwall insulation from the conductor are addressed by this test. The procedure is applicable to the following machines: -- Indirectly cooled combustion turbine generators -- Indirectly cooled pumped storage or peaking load hydrogenerators -- Indirectly cooled synchronous condensers No pass/fail criteria are presented; rathere, the test results on a variety of stator bars and coils are compared. Pass/fail criteria may be established by users of this recommended practice.
A test method to determine the relative ability of high-voltage form-wound stator bars and coils of large rotating machines to resist deterioration due to rapid heating and cooling resulting from machine load cycling is described. The test procedure is primarily intended for machines where the stator windings are indirectly cooled by air. This procedure provides a recommended practice for performance of thermal cycle testing of form-wound stator bars and coils without the use of simulated core. Since thermal cycling tests will result in aging of the insulation of the bar or coil, prototype or spare bars or coils obtained from a normal production run must be used in the test. Thermal cycle testing of bars and coils confined in a simulated core, that would simulate the effects of the core, would require different parameters and therefore is not covered by this procedure.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number 1310
Publication Date Nov. 30, 1995
Language en - English
Page Count 24
Revision Level
Supercedes
Committee Electric Machinery
Publish Date Document Id Type View
May 21, 2012 1310-2012 Revision
Nov. 30, 1995 1310-1996 Revision