Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2008.06a
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- Pages.1887-1891
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- 2008
Evaluation on Insulation Performance of Low-voltage Induction Motors by Partial Discharge Measurement
부분방전 측정에 의한 저압용 유도전동기의 절연성능 평가
Abstract
In this paper, we dealt with a partial discharge (PD) measurement method that has been accepted as an effective and non-destructive technique to estimate insulation performance of low-voltage induction motors. The PD measurement system consists of a coupling network, a low noise amplifier, and associated electronics. A shielded box was used to reduce environmental noise. Frequency characteristic of the coupling network was estimated by a sinusoidal signal input, and the low cut-off frequency of the coupling network was 1 MHz (-3 dB). Also, we carried out a calibration test for the PD measurement system. Sensitivity of the system was of 84 m
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