Specifications

7SR242 Duobias Applications Guide

W1 Internal Phase-Phase Fault

Figure 2-8: Relay Currents - Star Winding Internal Phase Fault

Notes

B - C fault causes current to flow in the A, B and C elements

The Yd ICT connection causes a 1:2:1 current distribution and introduces a 1/3 multiplying factor.

Relay may indicate three phase fault