IEEE 1310-1996

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.