[Arash]

How do the transformer vector group influence on permissible neutral loading and level of system ground fault currents?
How do the transformer vector group influence on permissible neutral loading and level of system ground fault currents?

موضوع

[Hamid]

The three phases of transformer windings can be arranged in star – , delta – or zigzag -connection. The vector group (star: Y or y; delta: D or d; zigzag; Z or z) is indicated on the transformer

[R K Mohapatra]

For a 3 phase core type power transformer the Zero sequence impedence is normally 65-75 % of the positive sequence impedence at a workinf flux density of 1.6 Tesla .

[R K Mohapatra]

The ratio of Zero sequence impedence to Positive sequence impedence is around 0.7 for a 3 phase core type power transformer with working Flux density 1.6 Tesla .

[نویسنده]

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