GE IAC59A Instructions Manual page 14

GEH-1753
Time Overcurrent Relays Type lAC
DEVICE FUNCTION NUMBERS FOR USE
WITH ALL EXTERNAL DIAGRAMS
50
Instantaneous Unit
51 Overcurrent, Relay, Type lAC
51N -
Ground Overcurrent Relay, Type lAC
52 Power Circuit Breaker
SI Seal-in Unit, with Target
TC Trip Coil
A Auxiliary contact, closed when breaker
closes.
A-C BUS
.li
XI
TRIPPI•G
'I[•CTOR-
7
Fig. External
5 (K6375668-l)
Type IAC51A Relays used
t
R e ac ors for Protection of aTThree-Phase
6
1
2
)
il=J.
.ll=l.
Connections of Three
in Conjunction with Tripping
Circuit.
A-C BUS
(K-6375667-2)
4
Fig. External Connections
Type IACSlA Relays used
Ground Overcurrent Portection of a 3-Phase Circuit.
A-C BUS
Fig. 6 (K-6375669-6) External Connections of
Type IACSlR Relays used for 3-Phase Circuit
. . . r :
ll=1
1�1
of
Three
for
Phase-to-Phase and
Three
Protection,