In Delta, how is voltage measured?

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Multiple Choice

In Delta, how is voltage measured?

In a delta connection, voltage is measured between two lines, i.e., line-to-line (phase-to-phase). That’s because each winding runs directly between two lines, so the voltage across a winding equals the voltage between those two lines. There isn’t a neutral reference in a pure delta, so measuring phase-to-neutral or line-to-neutral isn’t applicable. In contrast to a wye, where line-to-neutral is the phase voltage and line-to-line is related by a factor, in delta the line voltage directly equals the winding (phase) voltage. So you measure between two lines to get the system voltage. For example, a 480 V delta system would show 480 V between any pair of lines.

In a delta connection, voltage is measured between two lines, i.e., line-to-line (phase-to-phase). That’s because each winding runs directly between two lines, so the voltage across a winding equals the voltage between those two lines. There isn’t a neutral reference in a pure delta, so measuring phase-to-neutral or line-to-neutral isn’t applicable. In contrast to a wye, where line-to-neutral is the phase voltage and line-to-line is related by a factor, in delta the line voltage directly equals the winding (phase) voltage. So you measure between two lines to get the system voltage. For example, a 480 V delta system would show 480 V between any pair of lines.

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