GE IAC57A - Page 8

GEH
-
1753
Time
Overcurrent
Relays
Type
IAC
A
-
C
8
US
TRIP
BUS
IrJ
1
2
n
¥
3
X
*
lA
-
r
h
LI
n
DEVICE
FUNCTION
NUMBERS
FOR
USE
WITH
ALL
EXTERNAL
DIAGRAMS
61
5
A
zi
=
i
h
50
Instantaneous
Unit
5
-
>
in
M
-
6
51
Overcurrent
,
Relay
,
Type
IAC
Ground
Overcurrent
Relay
,
Type
IAC
Power
Circuit
Breaker
51
N
52
SI
Seal
-
in
Unit
,
with
Target
Trip
Coil
Auxiliary
contact
,
closed
when
breaker
closes
.
Fig
.
4
(
K
-
6375667
-
2
)
Type
IAC
51
A
Relays
used
for
Phase
-
to
-
Phase
and
Ground
Overcurrent
Portection
of
a
3
-
Phase
Circuit
.
External
Connections
of
Three
TC
A
A
-
C
BUS
1
2
3
A
-
C
BUS
1
ZL
2
3
12
ss
1
.
jn
A
-
C
TRIPPING
-
H
1
»
l
«
B X x
‘
UNIT
j
^
L
112
l
0
C
5
l
~
lj
%
lira
.
t
ilrl
10
,
u
-
H
-
X
-
,
t
~
L
,
6
£
1
=
L
11
=
1
TR
|
PP
|
NG
Rf
ACTOR
"
"
"
-
-
1
Fig
.
6
(
K
-
6373669
-
6
)
External
Connections
of
Three
Type
IAC
51
R
Relays
used
for
3
-
Phase
Circuit
Protection
.
Fig
.
3
(
K
6373668
-
1
)
External
Connections
of
Three
Type
IAC
51
A
Relays
used
in
Conjunction
with
Tripping
for
Protection
of
aTThree
-
Phase
Circuit
.
Reactors
6
Courtesy of NationalSwitchgear.com