Steve [Sparky],

This core has two individual and completely separately wound Secondary coils.
One is connected in Delta [the 3 coils are connected in a Parallel fashion] - these output terminals are:
X1 [Phase A],
X2 [Phase B] and
X3 [Phase C].
The other is connected in Wye [the 3 coils are connected in a Series Additive fashion] - these output terminals are:
Y1 [Phase A],
Y2 [Phase B] and
Y3 [Phase C].

Primary connections are on the other side of this core - right behind this term. block.

The Primary is Isolated from each Secondary, plus each Secondary is Isolated from each other - only wound on the common "Core".

Primary is Delta connection [Parallel Coil Connection Fashion] with terminations being:
H1 [Phase A input],
H2 [Phase B input] and
H3 [Phase C input].

Both Secondaries can be driving loads at the same time. This Transformer is designed to run a 6 phase rectifier [actually a dual 3 phase section rectifier], but it could just as easily be driving 208 volt 3 phase 3 wire and 240 volt 3 phase 3 wire loads simultanously.

I'll add some more info later with schematics.


Scott SET

P.S. the edit is to a spelling error I found after posting the message - instead of the word "Wound" to a common core, I had "would" - that "Would" have benn quite the Corn-Fuser [Linked Image]
Hope there's no more!!

SET

[This message has been edited by Scott35 (edited 04-22-2001).]

Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!