Abstract :
GROUND-FAULT NEUTRALIZERS have been applied principally in the range of medium transmission voltages. The effectiveness of ground-fault neutralizers on a system depends on the ratio of single line-to-ground faults in the total number of nonpersisting faults. This ratio is influenced by the transmission-line configuration, the line insulation employed, and the structure-footing resistance if structure downleads are used. Where this ratio has been high, ground-fault neutralizers have provided an excellent record in reducing line outages 80 to 90 per cent.
