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EntelliGuard R Circuit Breaker Retrofill AKD-8 Installation Manual DEH41549 R05
Install AKD-8 & substructure type 3200, 4000 & 5000A Retrofill Breaker.
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 underneath the legacy
breaker align with rejection pins on the drawout tray assembly. 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 Switchgear, GE 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 GE Part number
0247B8961G001
for 3200-4000A
and
0247B8961G003
for 5000A
Lifting Bar and a suitable hoist to lift from above as shown in Figure 18A. (This lifting bar has
been tested to 200% of its 700 lb rating.)
B.
Alternate method, use a lifting chain and hooks rated at least 1400 lbs to lift the breaker from
above as shown in Figure 18B. (chains must not be at an angle less than 45 degrees from the
horizontal plane.) Installation in upper compartments may not be possible with limited overhead
space or using the GE switchgear hoist without the lifting bar noted above.
Figure 18. AKD-8—Location of Hooks
Figure 18A. AKD-8—Using GE Lifting bar
and hoist (preferred method)
Figure 18B. AKD-8—Using Chain And
Hook (alternate method)
3.
Make sure that the lifting bar or generic chain-hooks are secured and locked in place.
Dropping a
breaker can result in injury or death.
4.
Line up the breaker in front of the compartment where it will be installed; then raise it slightly above
the height of the drawout Tray assembly.
5.
Pull out the drawout tray assembly beneath the breaker.
6.
Align the breaker
in front of
the 5/8” diameter conical topped pins at the rear of the tray and align
the smaller 3/8” diameter pins
to locate thru the holes in the breaker frame
.
7.
Lower the breaker down on the tray. It should sit flat if the rejection pins pass thru the rejection
plates properly and the breaker was located as in step 6.
8.
Install two 3/8-16 bolts thru the lower breaker frame at the front corners and into the drawout tray
assembly. Torque both to 25 lb-ft.
