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Shielded electronic current transformer
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DOI：10.1109/TIM.2005.843565.png)
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摘要
En 中文
A current transformer with nominal ratio 10 A to 10 mA, intended for low-frequency applications, was developed. It includes an electronic device to reduce the magnetizing current, and a continuous shield in the secondary winding (coaxial cable) in order to eliminate the effect of stray capacitances. No guard-source is connected to the shield. It is proposed in this paper to leave the cable-shield-potential floating. This leads to high-accuracy results (ratio errors and phase-displacements in the order of few parts in 10(6) from 50 Hz to 1 kHz).
Keyword:
compensation
current
error
guard
measuring transformer
phase displacement
power frequency
shield
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期刊
IF:
5.9
论文数:
2.0W
被引数:
5.8W
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