1 Scope
This standard specifies the modal test analysis and vibration measurement methods and evaluation criteria with regards to stator core and frame for large dipolar turbo-generators.
This standard is applicable to the turbo-generator set with the rated power of 50MW or above.
This standard is applicable to the modal test analysis and vibration measurement and evaluation on the stator core and frame for turbo-generators which are subjected to type test in the manufacturer.
This standard is applicable to the measurement and evaluation on stator core and frame for turbo-generators operating under rated conditions.
2 Normative References
The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments (excluding correction to), or revisions of, any of these publications do not apply. However, parties to coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents applies. For undated references, the latest editions of the normative documents are applicable to this standard.
Foreword I
1 Scope 1
2 Normative References 1
3 Terms and Definitions 2
4 Measurement Methods 2
4.1 Modal Test Analysis 2
4.2 Vibration Measurement 4
5 Measuring Apparatus 5
5.1 Impact Hammer 5
5.2 Vibration Pickup 6
5.3 Amplifier 6
5.4 Analyzer 6
6 Evaluation Criteria 6
6.1 Evaluation Criterion on Modal Test for Stator Core and Frame of Turbo-generator 6
6.2 Evaluation Criterion on Vibration Amplitude 7
