Generator Test Procedures

1. Table of Content:
1 Objective.......................................................................................................
2 Scope............................................................................................................
3 Referenced Documents.................................................................................
4 Definitions and Abbreviations........................................................................
5 Machine condition..........................................................................................
6 Conduction of test..........................................................................................
7 Interpretation of test results...........................................................................
7.1 Winding connection...........................................................................
7.2 Correction for temperature.................................................................
7.3 Minimum values for insulation resistance.........................................
7.4 Polarization index P.I. (ratio of 10-min / 1-min insulation resistance)
7.5 Insulation time constant of HV-stator windings τ = R10.C (MΩ.µF = s)
8 Drying of windings.........................................................................................
9 Proceeding in case of deviations...................................................................
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5. 9 Proceeding in case of deviations
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6. Any nominal value, minimum value, maximum value, tolerance etc given
in an instruction is intended to serve for quality control purposes only.
In case of deviations, a nonconformity report must to be written according
to international standard
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7. Any nominal value, minimum value, maximum value, tolerance etc given
in an instruction is intended to serve for quality control purposes only.
In case of deviations, a nonconformity report must to be written according
to international standard
Page 6 of 6