
APPENDIX
91
NA011 - Manual - 05 - 2022
NA016-SCH2.ai
C2
C1
C3
C4
C5
C6
P1
S1
S2
P2
I
L1
I
L2
I
L3
CB position
NA
011
A13
IN1
IN2
IN3
A14
A15
A16
A17
A18
DG
50/51
I
E
P1
S1
S2
P2
C7
C8
50N
/
51N
Two phase CTs and residual current from core balanced CT
Circuit Breaker
Position
79 IN3 Select
Note 1
Note 1: when only two phase CTs are available, the residual current must be measured (cannot be calculated from the phase currents)