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GEI-86134, Power Circuit Breokers
AKR-5OH.
An AKR-50
with
extended
short
circuit
?ffiEs
attaine$-by special
arc
quenchers, closing
springs and
added
insulation.
euencher tops
and
closing springs currry the same
red color
used
on
the
AKR-30H.
AKRT-50. A
20004 extension
of
the
1600A
frame
AEF-:$;-
M
o
dif
i
cations
ar
e :
a.
New
and
larger
upper stud assembly,
movable
contact
arms
and
pivot block.
b.
Stationary main contacts increased
from
6
to
g;
otherwise
the stationary
contacts
are
identicai
to the
AKR-50.
See
Figs.
g
and 9.
BREAKER RATINGS
AKR
breakers a.reavailable inthree frame sizes
--
800,
1600
and
2000
amperes.
These values re_
present the maximum continuous current capability
of the respective
frames.
However,
each
breaker
carries
a
specificrating whichis
determined by the
current.sensor
€rmpere
rating(or
tap
setting) of
tt"
trip
device
with which
it
is
equipped.
EXAMPLE: An
AKR-5A-3O
breaker with
SST
sensor tap set on 1004
is
rated
100A.
Short cir cuit ratings vary
with
the
applied system
voltage..
OTZ
!
V systems they are atso
Oependent
upon
whether the overcurrent
trip
device contains
an
instantaneous
trip element.
See
lante
Z.
TABI.T 2
BREAKTR
RAIIIIGS
Frame
Size
(Amperes)
Breal<er
Type
Rated
Maximum
Voltage
(60H2 ac)
3{
Short
Circuit
Rating
(kA RMS Sym)
with
Instantaneous
Trip
Without
Instantaneous
Trip
800
AKR-30
635
508
254
30
30
42
30
30
30
AKR-3OH
635
508
254
42
42
50
42
42
42
1600
AKR-50
635
508
254
42
50
65
42
50
50
AKR-5OH
635
508
254
50
65
65
50
65
65
2000
AKRT.SO
635
508
254
42
50
65
42
50
50
800
AKRU-30
600
200
200
1600
AKRU
-50
600
200
200
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Do you have a question about the AKR Series and is the answer not in the manual?
Questions and answers
trying to remove the breaker using a socket to the all thread counterclockwise and the all thread comes out indicating the jam nuts are absent. is there another way to remove the breaker.
@george A dupre
To remove a GE AKR Series breaker when the all-thread comes out and the jam nuts are absent, follow these steps:
1. Remove the sensor stud if needed to gain working clearance. This can be done by removing its four holding bolts from the rear of the breaker (refer to Fig. 20 in the manual).
2. Disconnect the neutral sensor and verify proper connection and continuity, ensuring it matches the phase sensors in rating and tap setting.
3. Lift out the sensor and its loads.
4. Tap the terminal board to disconnect it.
These steps allow removal of the breaker even without the jam nuts.
This answer is automatically generated