Air Core Reactors
Neutral Grounding Reactors

Neutral Grounding Reactors are single phase units. They are installed at specific locations in the transmission network, particularly at the neutral of large power transformers and limit the line to ground fault current under system earth fault conditions to specified levels. The specification should also include unbalanced condition continuous current and duration.

Neutral Grounding Reactors are preferred versus resistors due to much lower losses arising from the unbalance currents.