GE IAC51V 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
Auxiliary contact, closed when breaker
A
closes.
A-C BUS
.li
I
Tij)pPJ•(;
..: ACTOR�
-
Fi�. 5
Type IAC51A
(K6375668-l) External
R�lays used
Reactors for Protection of aTihree-Phase
6
1
2
3
.ll: :,l
llcl
Connections of Three
Circuit,
in Conjunction with Tripping
A-C BUS
Fig. 4 E t
(K-6375667-2)
x
Ove cu r t
Type IAC51A Relays used for Phase-to-Phase
r
Ground r e n Portection of a 3-Phase
BUS
A..C
Fig. External Connections of
6 (K-6375669-6)
used
Type IAC51R Relays
. . . r :
ll=1
1-1
l
r
e na Connections of T h re
and
Circuit.
Three
for 3-Phase Circuit Protection,
e