Siemens SIPROTEC 7UT633*-* N series - Page 139

2.3 Restricted Earth Fault Protection
139
7UT613/63x Manual
C53000-G1176-C160-2
Figure 2-52 Restricted earth fault protection on a non-earthed transformer winding with
neutral reactor (starpoint former) within the protected zone
Figure 2-53 Restricted earth fault protection on an earthed shunt reactor with CTs in the
reactor leads