Talk:Zigzag transformer

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I think the description of how the topology actually looks is at least unclear (should "turn around" mean what I think is missing?). This paper was a lot more helpful on finding out what they do and how they look: http://www.ipst.org/TechPapers/2005/IPST05_Paper044.pdf Additionally, this paper provides the detail on how exactly ZigZag transformers help reduce harmonics, a claim that puzzled me at first.

Why it can be used to provide a path for short-circuit currents becomes more evident by pointing out that the reactance of a ZigZag transformer with equal number of windings on both legs involved for each phase is in symmetrical components proportional to [1 0 0; 0 1 0; 0 0 0], so the zero-system is always short-circuited, the reactance of the others can be chosen arbitrarily high to reduce ohmic losses.

[edit] Query

Quote Zero sequence (earth fault) current flows between the zigzag’s neutral to the phase effected by the fault. Shouldn't it be "affect"? —Preceding unsigned comment added by 86.141.118.54 (talk) 13:13, 26 October 2007 (UTC)