Paul Frank

The Basics of Selecting Industrial Fuses — Part 1

Oct. 1, 1999
Modern electrical systems have enormous capacities for destruction when short circuits occur. Proper fusing is critical. One cycle of high fault current can vaporize wiring and...

The Basics of Voltage Imbalance

Sept. 1, 1999
Electrical equipment; especially motors and their controllers; will not operate reliably on unbalanced voltages in a 3-phase system. Generally, the difference between the highest...

The Basics of 3-phase transformers — part 2

Aug. 1, 1999
Most large power (and many small distribution) transformer installations provide all three phases. Sometimes they do so with three single-phase units, sometimes with one 3-phase...