This Schematic has been brought over from the "Theory Area" for your convenience.

[Linked Image]

3 Phase 4 Wire Wye connections - using three individual 120 / 240 VAC 1 phase Transformers.
Secondary coils connected in Parallel on each Transformer.

Related Text From Original Post

Topic: Wye schematic - 3rd in the series
posted 05-11-2001 03:20 AM

Here's one of a 4 wire Wye, using three separate 1 phase transformers - as would be on a pole mounted
transformer bank.

Note the complete difference in how the coils are wired here, as to the Delta method??

These coils [split coils] are in Parallel - so each transformer has 120 VAC output. On the Delta, each
transformer's split coils are in series, so each transformer has 240 VAC output [the bottom coil is center
tapped for the neutral].

Scott SET

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