48
SIPROTEC 7SJ81/7SK81 V4.70, Product Information
E50417-K1150-C462-A2, Edition 02.2012
Figure 20
Connection to 3 low-power CTs, normal circuit layout,
appropriate for all networks
Figure 21
Connection to 3 low-power CTs - additional low-power CT for
sensitive ground fault detection INS - only for isolated or
resonant-grounded networks