GE IAC53A

A-C 8~ S
TRIP BLS
(-) --.------
2
3
5
5
51-3
.a=.!
6
6
5
.llii.
H
6
-------
Figure B (K-6375667 [2]) External Connections of
Three Type IAC53A Relays Used for Phase-to-
Phase and Ground Overcurrent Protection of a
3-Phase Circuit
A-C BUS
Figure 9. (K6375668-1) External Connections of
Three Type IAC53A Relays used in Conjunction
with Tripping Reactors for Protection of a 3-Phase
Circuit
Type IAC Time Overcurrent Relay GEH-1788
Device Function Numbers for Use with ALL
51-1 External Diagrams
50
51
51N
52
SI
TC
A
Instantaneous Unit
Overcurrent Relay, Type IAC
Ground Overcurrent Relay, Type IAC
Power Circuit Breaker
Seal-in Unit, with Target
Trip Coil
Auxiliary Contact, closed
when breake .. • closes
A-C IIJS
~
IOC
Figure 10. (K-6375669-6) External Connections of
Three Type IAC53R Relays Used For 3-Phase
Circuit Protection
9