Protection of the Neutral Conductor

Overload detection shall be provided for the neutral conductor in a multi-phase circuit Where the cross-sectional area of the neutral conductor is less than that of the line conductors. The overcurrent detection for the neutral…

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Phase Shifting Transformers to Cancel Harmonics

When there are several non-linear loads of equal ratings in a power systems, the use of phase shifting transformers could help cancel harmonics. After harmonic filters, phase shifting transformers are one of the simplest solution…

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Harmonics and Neutral Currents

Before the advent of computers, variable speed drives, soft starters and other non-linear loads, the only source of harmonics in power systems are industrial plants using arc-furnaces. These arc-furnaces require so much power that main…

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