Pole-mounted transformer bushings: which designations correspond to the secondary?

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Multiple Choice

Pole-mounted transformer bushings: which designations correspond to the secondary?

In pole-mounted transformers, bushing designations show which winding they connect to: H terminals are the high‑voltage primary, and X terminals are the low‑voltage secondary. On the secondary side, X0 typically represents the neutral point, while the other X terminals are the phase connections for the low-voltage windings. So the secondary consists of X0, X2, and X3, with the primary winding connected to H1, H2, and H3. This matches the standard labeling where the high‑voltage bushings are H1–H3 and the low‑voltage bushings incorporate X designations, including X0 as the neutral. The other options would mix up primary and secondary or use X terminals in a way that does not align with how the windings are actually connected.

In pole-mounted transformers, bushing designations show which winding they connect to: H terminals are the high‑voltage primary, and X terminals are the low‑voltage secondary. On the secondary side, X0 typically represents the neutral point, while the other X terminals are the phase connections for the low-voltage windings.

So the secondary consists of X0, X2, and X3, with the primary winding connected to H1, H2, and H3. This matches the standard labeling where the high‑voltage bushings are H1–H3 and the low‑voltage bushings incorporate X designations, including X0 as the neutral. The other options would mix up primary and secondary or use X terminals in a way that does not align with how the windings are actually connected.

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