JIS C 4609:1990 English Edition

Directional ground relay set for 6.6 kV consumer

Abstract

This Japanese Industrial Standard specifies the directional ground relay set which consists of a zero-phase-sequence current transformer, zero-phase-sequence reference input device, and a directional ground relay (this relay is referred to as "relay" hereafter), which is installed at the power receiving point of a consumer of 6.6 kV of such a system that the one-line ground-fault current is less than 30 A.

Details

Note
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