GE AK-1-15 Maintenance Instructions

GEK
-
7303
Low
Voltage
Power
Circuit
Breakers
TROUBLE
SHOOTING
1
REMEDY
CAUSE
TROUBLE
Overheating
Contacts
not
aligned
.
Contacts
dirty
,
greasy
or
coated
with
dark
film
.
Adjust
contacts
.
Clean
contacts
.
Replace
contacts
.
Clean
surfaces of
current
-
carrying
parts
.
Relocate
or
provide adequate
enclosure
.
Increase
capacity
of
bus
or
cable
.
Tighten
,
but
do
not
exceed
,
elastic
limit
of
bolts
or
fittings
.
Check
breaker
application
or
modify
circuit
by
decreasing
load
.
Provide
adequate
ventilation
.
Correct
bus
or
cable
arrangement
.
Contacts
badly
burned
or
pitted
.
Current
-
carrying
surfaces
dirty
.
Corrosive
atmosphere
.
Insufficient bus
or
cable
capacity
.
Bolts
and
nuts
at
terminal connections
not
tight
.
Current
in
excess
of
breaker
rating
.
Excessive ambient
temperature
.
Inductive
heating
.
Failure
to
Trip
AK
-
2
Breakers
Travel
of
tripping
device does
not
provide
positive
release
of
tripping
latch
.
Worn
or
damaged
trip
unit
parts
.
Binds
in
overcurrent
trip
device
.
Re
-
adjust
or
replace
tripping
device
.
Replace trip
unit
.
Replace
overcurrent
trip
device
.
Loose
or
Disconnected
Power
Sensor
Disconnect
Plugs
.
Tighten
or
Reconnect
Disconnect
Plugs
.
Tighten
or
Reconnect
Tap
Connections
.
Failure
to
Trip
AK
-
3
Breakers
Loose
or
Broken
Power
Sensor
Coil
Tap
Connections
.
)
Check
application
of
overcurrent
trip
device
.
Check
application
of
overcurrent
trip
device
.
Replace
overcurrent
trip
device
.
False
Tripping
AK
-
2
Breakers
Overcurrent
pick
up
too
low
.
Overcurrent
time
setting
too
short
.
Bind
in
overcurrent
trip
device
.
Tighten Thumb
Screw
on
Desired
Setting
.
Captive
Thumb
Screw
on
Power
Sensor
Loose
Fail
-
Safe
Circuitry
Reverts
Characteristic
to
Minimum
Setting
and Maximum Time
Delay
.
Tap
Setting
Dial
on
Power
Supply
Incorrectly
Set
.
External
Ground
Sensor
Coil
Improperly
Connected
.
Set
Dial
to
Correspond
with
Power
Sensor
Coil
Tap
.
Refer
to
Fig
.
40
Page
38
for
Polarity
and
Connections
.
Check
Continuity
of
Shield
and
Conductors
Connecting
the
External
Ground
Sensor
Coil
False
Tripping
AK
-
3
Breakers
Failure
to
Close
and Latch
Re
-
align and
adjust
attachments
.
Binding
in
attachments
preventing
resetting
of
latch
.
Latch
out
of
adjustment
.
Latch
return
spring
too
weak
or
broken
.
Hardened
or
gummy
lubricant
.
Safety
pin
left
in
push
rod
..
Motor
burned
out
.
Adjust
latch
.
Replace
spring
.
Clean
bearing
and
latch
surfaces
.
Remove
safety
pin
.
Replace
motor
.
Replace
or
adjust
faulty
device
.
Faulty
control circuit
component
.
Improper
contact
sequence
(
main
contacts
not
sufficiently
parted
when
arcing
contacts
part
)
.
Short
-
circuit
current
level
above inter
-
rupting rating
of
breaker
.
Burned
Main
Contacts
Increase
arcing
contact
wipe
.
Adjust
contact
sequence
by
raising
or
lower
-
ing
main
movable
contact
pivot
block
.
Requires
system
study
and
possible
replacement
with
breaker
having
ade
-
quate
interrupting
capacity
.
Replace
stationary
contact
springs
and
dress
up
or
replace
contacts
.
J
Loss
of
contact
wipe
or
pressure
.
6
Courtesy of NationalSwitchgear.com

GE AK-1-15 Specifications

General

Brand	GE
Model	AK-1-15
Category	Circuit breakers
Language	English