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AKR Series
GE AKR Series User Manual
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Power
Circuit
Breokers,
GEI-86134
li
.A
FLUX
SHIFT
TRIP
DEVICE
PROGRAMMER
UNIT
r----l
(48V.
dc)
(TO
SCR
ANODE)
t______..i
s
F
F
F
F
)--
F
F
L
CONNECTOR
(AMP
201298-1)
4.WIRE
LOAD
Fi.g.
27.
Cabling
Diagvam
-
SS?
uti.th
ground
fault
on
4-wire
load
PROGRAMMER
CONNECTOR
(AMP
201297-1)
BREAKER
HARNESS
CONNECTOR
GROUND
FAULT
DEFEAT
CABLE
CAT.
NO.
TGFD
PROGRAMMER
UNIT
l------r
r-1
|
r\r
I
a--t----z
CURRENT:":\
SENSORS
I
o_5
oA!-f€-l-1
'----ro
o
B
gj--o_f<
L______+_{.H
oc
g-+-+-3
+
>Fl|-*r<
)L'ii-ofi
.
,
d-J--J
NEUTRAL
I
"I
\
SENSoR
I
H
DIScoNNEcT
i
Gq
L_t
ffr
ffr
#
hll
4++---Jlll
<-t--F
^lll.
e-+-o+--Jlllf
e+--o-f
"illf
++++---_-Jlllt
fft-rlll
ffJ---Jlll
ANY
SST
PROGRAMMER
UNIT
WITH
GROUND
FAULT
ELEMENT
ff
+o
<--l-{
L_t
MALE
END
FEMALE
END
L__
I
Cabling
diagram
with
Ground
Fault
Defeat
Cable
inserted
between
breaher
lnrness
and
SST
Programmer
Unit
-
for
use
during
single-phase,
high
current
-
low
uoltage
testing.
ll
{i
B
B
E-
H
E
A
il
-A
c
,l
I
fr
f
U
D
%
H-
tl
J
'1
L
r
#
H
K.
L.
J
II
L
ffi
lr
>5
^L
N
N
M
M
D
-P
R.
R
Fig.28.
23
22
24
Table of Contents
Table of Contents
2
Introduction
3
Rear Uiew of AKR-30 Breaker
3
Constructional Diff Erences
3
Breaker Ratings
4
Non-Interchangeability Hardware Arrangements
5
Slide Rail Rejection Pin Locations
5
Drawout Breaker Interchangeability
5
Contact Maintenance
6
Manual Handle Adjustment
6
Safety Precautions
6
AKR/AKRU-30 Contact Structure
7
Contact Adjustment
7
AKR-30 Wipe Adjustment
8
Contact Adjustment
8
AKRT- 50 Movable Contact Pivot Block
9
AKRT-50 Contact Structure
9
AKRU-30/50 Fused Breakers
10
Contact Replacement
10
Fuse Sizes and Mounting
10
GE CLF Fuses for AKRU Breakers
10
Mounting of Class J Fuses on AKRU-30 Breakers
11
Typical Mounting for Class L Fuse
11
AKRU-|0 Breaker with Special 2500A Fuse
12
Open Fuse Lockout Device
12
Speciol 2500A Fuse for AKRU-50
12
Mounting for Special 2500A Fuse on AKRU-50 Breaker
13
Plan View of AKRU-50 Breaker Showing 2500A Fuse Tang Positions
13
SST Block Diagram
14
SST Programmer Unit
14
Breaker Maintenance
6
Type SST Overcurrent Trip Device T4
14
Components
14
AKR-54-30 Breaker with SST Trip Device
15
SST Trip Characteristics
16
SST Phase Sensor with Tap Board
16
SST Neutral Sensors
16
Troubleshooting
17
Neutral Sensor Secondary Disconnect Blocks
17
Using the SST Test Set
18
False Tripping
19
Replacement of Current Sensors
19
Flux Shift Trip Device
20
Flux Shift Trip Device Components
21
Trip Rod Adjustment
21
Cabling Diagram
22
Type ECS Overcurrent Trip Device
24
ECS Programmer Unit
24
ECS Block Diagram
24
Ecs Sst
24
ECS Trip Characteristics
25
ECS Current Sensors on AKRU-44-30 Breaker
25
Cabling Diagram for ECS Trip Device
26
ECS Current Sensor
26
5
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GE AKR Series Specifications
General
Number of Poles
1, 2, 3
Voltage Rating
240V AC, 480V AC, 600V AC
Frame Size
AKR
Trip Unit
Thermal-Magnetic
Standards
UL, CSA
Amperage
Varies by model (15-1200)
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