This unique millivolt testing technique provides a basic check in troubleshooting motor breakdown situations. As a maintenance electrician, I'm sure you've been in the high-pressure situation of ...

Acceptable ohm reading for a good current relay. One type of starting relay used on fractional-horsepower compressors is the current relay. This type of starting relay uses the initial high inrush ...

When you get the call, “The motor won’t start,” you’d best have a logical and systematic plan in place to approach the problem. “Easter egging” just doesn’t work unless you happen to be very lucky!

Schweitzer Engineering Laboratories, Inc. has introduced new features in the SEL-701 motor protection relay. Schweitzer Engineering Laboratories, Inc. (SEL) has introduced new features in the SEL-701 ...