Characteristics Of The Delta Connection Flashcards

1
Q

If the magnitudes of the phase voltages in a three-phase, three-wire, delta-connected system are 240V, what are the magnitudes of the line voltages?

A

240V

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2
Q

If the magnitudes of the phase currents in a three-phase, three-wire, balanced delta system are 200A, what are the magnitudes of the line currents?

A

346A

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3
Q

In a purely resistive, balanced, delta-connected system, what is the magnitude of the phase angles between the line voltages and the line currents?

A

30°

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4
Q

What is the mathematical relationship between the line currents and the phase currents in a delta connected system?

A

I(line) = √3 x I(phase)

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5
Q

Are three-wire, delta systems normally grounded or ungrounded?

A

Ungrounded

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6
Q

In a three-phase, four-wire, grounded ∆ system, which phase conductor is required to be the one with the higher voltage to ground?

A

Phase A

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7
Q

Is it permissible to put the grounded conductor and the high leg of a three-phase, four-wire, ∆ system in the same panel compartment?

A

No, the CEC requires that the high leg be separated from the grounded conductor

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