HISTORY: High Resistance Grounding is a means of limiting ground fault current in electrical systems. Unrestrained fault current can cause severe equipment damage, product destruction, and personnel ...

A transformer protection relay does not replace upstream devices. It defines responsibility. By clearly assigning fault ...

A grounding transformer placed on the bus side (Fig. 2 location 1) of the collector station introduces a problem with the line losing ground reference during fault conditions on a line. This can be ...

Unfortunately, not everything in an underground utility system is actually under the ground. What remains visible are metal service boxes situated above ground, on concrete pads, as part of an ...

Picking up where we left off in Part 1, we need to explore some methods to mitigate problems caused by unpredictable ground currents.

LONGMEADOW - Western Massachusetts Electric Co. officials want to replace the underground transformers on Ardsley Road with above-ground transformers following a series of power outages at more than ...