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Multiple Choice

Which designation identifies the secondary bushings on a pole-mounted transformer?

On pole-mounted transformers the high-voltage side is labeled with H designations, while the low-voltage (secondary) side uses X designations. The secondary is typically a wye arrangement that includes a neutral terminal (X0) plus three phase terminals (X1, X2, X3). The set X0, X2, X3 represents the secondary bushings on this unit, with X0 serving as the neutral/ground reference and X2 and X3 being two of the phase terminals accessible on the secondary side. This is why that designation is used to identify the secondary bushings. The other options rely on primary designations (H1, H2, H3) or include terms not used for the secondary arrangement on this transformer.

On pole-mounted transformers the high-voltage side is labeled with H designations, while the low-voltage (secondary) side uses X designations. The secondary is typically a wye arrangement that includes a neutral terminal (X0) plus three phase terminals (X1, X2, X3). The set X0, X2, X3 represents the secondary bushings on this unit, with X0 serving as the neutral/ground reference and X2 and X3 being two of the phase terminals accessible on the secondary side. This is why that designation is used to identify the secondary bushings. The other options rely on primary designations (H1, H2, H3) or include terms not used for the secondary arrangement on this transformer.