Continue exploring this big unit...
I found this transformer in the same unit but struggled with its winding/wiring (and how it may be used in 1-phase).
7 wires in total. Br(own)/G(reen)/W(hite)/Y(ellow)/R(ed)/B(lue) + Bk (black).
From the PCB I already figured out Br/G/W are input 3 phases.
The resistance between the wires are:
Between any pair in Br/G/W, or any pair in Y/R/B: 350 Ohm
Between Bk and any of the other 6 wires: 175 Ohm
Br-Y, G-R, W-B: all about 3 Ohm
How the winding/wiring of this transformer could be? I have read this article which is very useful but I didn't find any winding which would give such connectivity/resistance measurement.
I guess Bk is the shared centre line of two stars (Br/G/W and Y/R/B) but the rest?
Would appreciate anything hits especially about: 1) its winding; 2) its possible function; 3) any potential use with 1 phase only. Thanks.
I found this transformer in the same unit but struggled with its winding/wiring (and how it may be used in 1-phase).
7 wires in total. Br(own)/G(reen)/W(hite)/Y(ellow)/R(ed)/B(lue) + Bk (black).
From the PCB I already figured out Br/G/W are input 3 phases.
The resistance between the wires are:
Between any pair in Br/G/W, or any pair in Y/R/B: 350 Ohm
Between Bk and any of the other 6 wires: 175 Ohm
Br-Y, G-R, W-B: all about 3 Ohm
How the winding/wiring of this transformer could be? I have read this article which is very useful but I didn't find any winding which would give such connectivity/resistance measurement.
I guess Bk is the shared centre line of two stars (Br/G/W and Y/R/B) but the rest?
Would appreciate anything hits especially about: 1) its winding; 2) its possible function; 3) any potential use with 1 phase only. Thanks.
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