Table Of Contents - GE AKR Series Maintenance Manual Supplement

CONTENTS
Introduction
Constructional
Diff
erences.
.
Breaker
Ratings
Drawout
Breaker Interchangeability
Breaker Maintenance
.
.
Precautions
Manual Handle Adjustment
ContactMaintenance.
. .
.
Contact Adjustment:
AKR.3O, -30H, AKRU-30
.
AKR-50, -50H, AKRU-50
.
AKRT-50
Contact Replacement:
AKR-30, -30H, AKRU-30
.
AKR-50, -50H, AKRU-50, AKRT-50.
.
.
.
6
o
6
o
7
I
8
10
10
FusedBreakersAKRu-30,
-50
......
10
FuseSizesandMountinC....
10
Special 2500A
Fuse.
72
Open
Fuse Lockout
Device
12
Type
SST
Overcurrent
Trip
Device
t4
Components
14
TripCharacteristies ......16
Troubleshooting.
77
SST
Test
Set
TAK-TS1.
. .
.
18
False Tripping (Ground
Fault)
19
Replacement
of Current
Sensors
19
Flux
Shift
Trip
Device
20
Cabling
Diagrams.
22
Ground
Fault Defeat
Cable
23
Type
ECS
Overcurrent
Trip
Device
24
Components
24
TripCharacteristics .,,,..25
Cabling
Diagram
26
ECS &
SST
Time-Current
Curves
27
fhese inslruclions
do nol purporl lo
cover
oll
detoils
or
voriations
in
eguipmenl nor
to
provide
for every possrble
conlngency
lo be
mel
in
conneclion
with instollolion,
operolion
or
moinlenonce. Should further
informolion be desired
or
should
porliculor problems orue
whrch
ore nol
covered sufticienlly
for lhe
purchoser's purposes, lhe
moller should
6e
referred
lo lhe
Generol Eleclric Compony.