Last month, we discussed the protective devices coordination procedure for a low-voltage motor and demonstrated how the ratings and settings of branch circuit and short circuit protective devices are ...

Power systems today operate in an environment where reliability and safety must be maintained despite rising loads, expanding ...

The rate of transient occurrences varies with every power system. Recent studies show that surges of 1kV or less are common — whereas 3kV surges are rare. Protecting against more frequent (internally ...

S&C has upgraded Coordinaide — The S&C Protection and Coordination Assistant. This application tool has been upgraded to improve the look and feel of the user interface and to include several new TCC ...

An ideal protection device must limit the energy going to the load being defended, to a sufficient minimum level, such that the load is not damaged. The protection device must survive this energy ...

In the first part of this series, featured in the February 2011 issue, we considered the selection of the protective devices of a low-voltage induction motor supplied from a motor control center (MCC) ...