What is a T-wound transfromer
What is a T-wound transfromer
(OP)
On a job, a designer stated that T-wound transformer cannot be used (This a dry-type 600V-208/120V Delta-Wye,3PH,4W configuration).
However, what is T-wound configuration and what are disadvantages/advantages of this type of winding.
However, what is T-wound configuration and what are disadvantages/advantages of this type of winding.






RE: What is a T-wound transfromer
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RE: What is a T-wound transfromer
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RE: What is a T-wound transfromer
In small kVA sizes (up to 9 or 15kVA) the default 3-phase transformer is often a T-T rather than a Δ-Y. The T-T needs two sets of winding rather than three. One winding is rated for phase-to-phase voltage, is connected phase-to-phase, and has a center tap. The other winding is rated 86.7% of phase-to-phase voltages, has a tap 42.3% from one end, and is connected to the center tap of the other phase with the tap closest to the end connected to the center of the other winding. (Hope that makes sense.)
Only two windings instead of three.
The portion of the second winding between the two taps sees more load current than the rest of the winding.
No delta winding.
Neutral isn't from a wye point, but rather from a tap in a winding.
RE: What is a T-wound transfromer
Davidbeach,
I did not quite understand how you make the connections.
So, what would be a disadvantage of the this arrangement? Would the fact that part of the winding sees more current than the rest of the system be one of the issues?
thanks.
p.s. Is there a diagram somewhere on the net for this connection.
RE: What is a T-wound transfromer
RE: What is a T-wound transfromer
thanks.
RE: What is a T-wound transfromer