The article in the March 3 issue of The News dealt with the secondary windings of a Delta service transformer with one winding center-tapped to the ground. The article stated that the power-leg or ...

One example would be a 120/240-V, three-phase, 4-wire Delta drop. The secondary of the Delta transformer (Figure 1, page 27) delivers power to a building. Remember, the secondary of these transformers ...

Dry-type and liquid-filled transformers. Transformers fall into one of two categories - dry-type or liquid-filled units. In dry-type transformers, the most common cooling medium is air (some sealed ...

It's possible that the open delta connection is contributing to unbalances in the voltage, which in turn leads to the third harmonic components in your load current. The fifth harmonic is more common ...