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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BlanquezCarlos A. Uniform stepgraded stepand ramped test methods. Since the s, motor windings have encountered many changes in their design and manufacture. The mathematical model developed was based on an artificial intelligence technique, more specifically neural networks.
The most usual methodology is the finite element method, or linear regression. In that sense, it is important to pay close attention to overheating, which results from excessive system losses and cooling system inefficiency.
ANSI/IEEE Std IEEE Recommended Practice for Insulation Testing of – Google Books
Showing of 7 references. In order to address this methodology, a calculation method was developed to determine temperature increases in the last stator package. This last scenario was also useful to test extrapolation accuracy. Uniform step, graded step, and ramped test methods. At that point, the temperature value will be compared to with the values obtained using finite elements method and multivariate regression.
This paper 59-1977 48 citations.
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High – voltage DC tests for evaluating stator winding insulation: Until recent revisions, the basic procedures and standards in use were written over 25 years ago. Use of AC and DC hipot tests to assess stator winding insulation.
The end region of a stator is the most sensitive part to overheating. Topics Discussed in This Paper. Showing of 39 extracted citations. Power uprates pose a threat to electrical generators due to possible parasite effects that can develop potential failure sources iees catastrophic consequences in most cases.
Citations Publications citing this paper. Significance of defects found during high direct voltage ramp tests. 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.
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The method is applied to determine core-end temperature when power is uprated to World Journal of Engineering and 95-1977Vol. References Publications referenced by this paper.
Detection of stator winding insulation failures: Stone Published in IEEE Transactions on Industry Applications IEEE standards and test procedures are widely used by motor and generator vendors ueee users to commission windings in new machines, as well as evaluate the condition of the winding insulation in operating machines. Dhirani, Ieeee Insulation for Rotating Machines.
Understanding water treeing mechanisms in the development of diagnostic test methods. Examples of stator winding partial discharges due to inverter drives. Online technique for insulation assessment of induction motor stator windings under different load conditions Majid MalekpourB.
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