# Open-Delta Transformer

 I've been thinking (and searching) about this for days but haven't reached anywhere: How do you calculate the total power output of an open delta transformer? I don't understand the explanation given in various texts and on websites: http://yourelectrichome.blogspot.com...f-3-phase.html The √3 ELIL formula was for closed delta because in a closed delta, we calculate the power delivered by one winding as EL*Iphase which becomes EL*(IL/√3) since phase current=IL/√3, and then multiply by three. But why are we using this formula for open delta? And btw, in the conductor attached to the point where the two windings are joined together, would the line current be √3Iphase? asked 11/15/2013 qwertyXP2

 The following post explains how to do power calculations: What is an Open Delta Transformer answered 12/3/2014 Steven McFadyen 246

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