DD CLC/TS 60034-27:2011

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Nature of PD in rotating machines
5 Measuring techniques and instruments
6 Visualization of measurements
7 Test circuits
8 Normalization of measurements
9 Test procedures
10 Interpretation of test results
11 Test report
Annex A (informative) - On-line partial discharge
        measurements
Annex B (informative) - Non-electrical methods of
        PD detection and methods for localization
Annex C (informative) - External noise, disturbance
        and sensitivity
Annex D (informative) - Methods of disturbance
        suppression
Annex E (informative) - Interpretation of PD magnitude
        data and phase resolved PD patterns
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Gives a common basis for: - measuring techniques and instruments; - the arrangement of test circuits; - normalization and testing procedures; - noise reduction; - the documentation of test results; - the interpretation of test results.

This part of IEC 60034 which is a technical specification provides a common basis for

• measuring techniques and instruments,

• the arrangement of test circuits,

• normalization and testing procedures,

• noise reduction,

• the documentation of test results,

• the interpretation of test results

with respect to partial discharge off-line measurements on the stator winding insulation of rotating electrical machines when tested with alternating voltages up to 400 Hz. This technical specification applies to rotating machines having bars or form wound coils with conductive slot coating. This is usually valid for machines with voltage rating of 6 kV and higher. The measurement methods described in this specification may also be applied to machines without conductive slot coating. However, results may be different and are not covered by this specification.