ABB Emax 2 Installation And Maintenance Manual page 35

7.
8.
9.
10.
Figure 69
11.
12.
Figure 70
13.
2TSA451011P0000 Rev-B
Check that the cassette is free from obstruction. (Figure 69) displays the racking
assembly, supporting the new retrofill breaker and Kirk Lock Information Label
supplied with AK-50 & AKT-50 Retrofit Cassettes.
If the racking panel of the cassette is padlocked, it may need to be opened to access
the racking mechanism.
Verify that the cassette position indicator shows DISCONNECTED and the racking
handle is disengaged.
Ensure that the cassette racking cams on both side walls of the cassette are in the
completely racked-out position. (Only for AKT 50 and show the image for the racking
cams position)
Pull out the two cassette Loading Rails to their full extent, horizontal to ground (Figure
69).
Inserting Breaker into Cassette, Wheels Lined Up with Roller Arms
Lower the circuit breaker gradually, at an angle, so that the rollers drop over the rails.
Make sure that the grooves in all rollers straddle the rails as shown in Figure 69.
This might need a two-man effort: one to carefully and slowly lower the suspended
breaker and the other to guide the breaker into the cassette enclosure. See Figure 69.
Keep the breaker steady. Continue to guide the breaker, while checking both sides and
underneath the assembly, so that both sets of wheels can be lowered easily on the
cassette rails (Figure 70). Check that the grooves in all rollers straddle the rails.
Peer underneath the breaker, as you maneuver it in, to make sure that the dual blades
clear the bottom of cassette (Figure 71).
Refer Emax 2 installation manual (1SDH001000R0002) for installing Emax 1.2, 2.2, 4.2
& 6.2 MP (Moving Portion) into the AKD5 compartment.
AKT50 , Keeping Breaker Steady
© 2020 Emax 2 Retrofill Circuit Breakers 600A-4000A | 35