What does it mean if a system is resistance grounded?

When a system is described as resistance grounded, it means that there is a resistive element connected between the neutral and the ground. This design is implemented to limit ground fault currents to a safe level in electrical systems. By having a resistance in place, when a fault occurs, the current does not just directly follow the path to ground, which could create a high short-circuit current that is dangerous and damaging.

The resistive grounding method allows for some level of ground fault, which can be measured and monitored, providing a safer operational condition in the event of an insulation failure. Furthermore, it offers benefits such as reduced shock hazard and minimized disruption to system performance.

In contrast, suitable grounding methods might be chosen based on other system conditions, but only the resistive grounding effectively describes the connection involving a resistance between neutral and ground, making it the key characteristic in the identification of a resistance-grounded system.