Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

high-resistance grounded system
an electrical distribution system in which the neutral is intentionally grounded through a high resistance. The high-resistance grounded wye system is an alternative to solidly grounded and ungrounded systems.

High-resistance grounding will limit ground fault current to a few amperes, thus removing the potential for arcing damage inherent in solidly grounded systems.
resistance ground
a grounding scheme in which the neutral of Y-connected machines is connected to ground through a resistance such that ground-fault currents are limited.
resistance grounded
See low resistance grounded system, high-resistance grounded system
low resistance grounded system
an electrical distribution system in which the neutral is intentionally grounded through a low resistance.

Low resistance grounding will limit ground fault current to a value that significantly reduces arcing damage but still permits automatic detection and interruption of the fault current.