IEEE Std ™). IEEE Recommended Practice for. Insulation Testing of AC Electric. Machinery ( V and Above). With High Direct. IEEE Std 95 () IEEE Recommended Practice for Insulation Testing of Large AC Rotating Machinery with High Direct Voltage. (This foreword is not a part of IEEE Std , Recommended Practice for Insulation In the Insulation Subcommittee of the IEEE Rotating Machinery .
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Uniform step, graded step, and ramped test methods. Scientific Research An Academic Publisher. The end region of a stator is the most sensitive part to overheating. Examples of stator winding partial discharges due to inverter drives.
Diagnostic tests Interpretation logic R.
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The most usual methodology is the finite 955-1977 method, or linear regression. At that point, the temperature value will be compared to with the values obtained using finite elements method and multivariate regression. On-line and off-line tests M. Stone Published in IEEE Transactions on Industry Applications IEEE standards jeee test procedures are widely used by motor and generator vendors and users to commission windings in new machines, as well as evaluate the condition of the winding insulation in operating machines.
Dhirani, Electrical Insulation for Rotating Machines.
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This last scenario was also useful to test extrapolation accuracy. Power uprates pose a threat to electrical generators due to possible parasite effects that can develop potential failure sources with catastrophic consequences in most cases. Uniform stepgraded stepand ramped test methods. Significance of defects found during high direct voltage ramp tests.
Until recent revisions, the basic procedures and standards iese use were written over 25 years ago. From This Paper Figures, tables, and topics from this paper.
iees World Journal of Engineering and TechnologyVol. Understanding water treeing mechanisms in the development of diagnostic test methods. Topics Discussed in This Paper.
Online technique for insulation assessment of induction motor stator windings under different load conditions Majid MalekpourB. References Publications referenced by this paper. Citations Publications citing this iwee. BlanquezCarlos A. Showing of 7 references.
Skip to search form Skip to main content. The mathematical model developed was based on an artificial intelligence technique, more specifically neural networks. In order 95–1977 address this methodology, a calculation method was developed to determine temperature increases in the last stator package. Use of AC and DC hipot tests to assess stator winding insulation.
Detection of stator winding insulation failures: Showing of 39 extracted citations. The method is applied to determine core-end temperature when power is uprated to This paper has 48 citations. The calculation of magnetic fields, the evaluation of eddy-current losses and the determination of loss-derived temperature increases, are challenging problems requiring the use of simulation methods.
High – voltage DC tests for evaluating stator winding insulation: Since the s, motor windings have encountered many changes in their design and manufacture.