Understanding Transformer Connections and Three-Phase Units

Front

What is the primary connection type for phase-to-ground in transformers? Options: Delta, Wye, Star, Zigzag

Back

Wye

Front

Fill in the blank: The 'power' transformer is normally _______ because it supplies some of the three-phase load.

Back

smaller

Front

What is the configuration called when three-phase power cannot come from Open-Wye secondary? Options: Open-Delta, Closed-Delta, Star-Delta, Zigzag-Delta

Back

Open-Delta

Front

What should you not connect to the lighting load in a three-phase system? 120 volts, 208 volts, 240 volts, 480 volts

Back

208 volts

Front

Remove the _______ if your using a power pot

Back

Ground strap

Front

What is always needed to identify in the bank for a 120/240 three-phase secondary?

Back

Power leg