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Install AKD-8 & substructure type 3200, 4000 & 5000A Retrofill Breaker.
Danger
e
lt must be ensured that the supply power to the
oe
compartment is turned off/ compartment is de-
explosion hazards.
energized
for all the
incoming
and
outgoing
pets
Po
circuits
of the
LVS
prior to
any work
being
conducted on it.
e
During the installation and related work on the
tasks.
e
Ensure only qualified personnel install, operate, service, and maintain all electrical
equipment.
To remove the exiting breaker follow instructions provide with the legacy breaker and or
switchgear/ switchboard.
Note that one must remove the two # 3/8-16 bolts holding the
breaker down on the drawout tray assembly. ( found at the front of the tray).
Notice how
the breaker is located at the rear by two 3/8" diameter pins passing thru the old breaker
frame.
Notice how the rejection plates on the floor of the switchgear compartment align
with rejection pins on the circuit breaker. Verify the correct breaker is being used. Compare
the rejection plate arrangement on the new breaker to those on the old breaker.
After the old breaker is removed and the compartment updated with any added features,
and secondary wiring checked, the breaker can be installed in the GE AKD-8 switchboard or
OEM Equipment.
1.
Verify that the new breaker is in the DISCONNECT and OPEN position.
2.
For the AKR-75/100/125 Retrofill Breaker.
a.
It is best to use ABB lifting Bar Part number 2TSE431931R100 for 3200-4000A &
2TSE431932R1000 for 5000A Lifting Bar and a suitable hoist to lift from above as
shown in Figure 45. (This lifting bar has been tested to 200% of its 700 Ib rating.)
b.
Use of Lifting (Spreader) bar allows to reach the top most switchgear compartment
easily, so it is the recommended method.
c.
Alternate method, use alifting chain & hooks rated at least 1400 Ibs to lift the breaker
from above as shown in Figure 46.
(chains must not be at an angle less than 45
degrees from horizontal plane.)
Installation in upper compartments may not be
possible with limited overhead space or using the GE switchgear hoist.
.
AKD-8, Location of Lifting Holes for Alternate method
Figure 44
ifting Holes
36| © 2020 Emax 2 Retrofill Circuit Breakers 800-5000A
2TSA451009P0000 Rev-B
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