Install Position Switch Actuator-Ak50 Breaker - ABB EntelliGuard AKD-5 Installation Manual

4. Place the L-bracket from the top of the cassette assembly such that the pins from the bottom 3
pin plate get inserted into the top plate.
5. Secure the connecting by fastening the nuts provided in the actuator kit along with the washers.
6. Mount the extension springs between the groove of the pin on this actuator assembly and the
fixed pin provided on the cassette base plate.
Note that the position switch actuator on the cassette is now installed and ready for use once the
breaker is being racked into the compartment.
7. Mount the cassette assembly on the rails of the AK25 cabinet in the AKD-5 and rack the cassette
into the compartment of the AKD-5 LVS.
Note: During racking of the EntelliGuard R breaker into the cassette, the position switch in the
compartment changes state as the breaker reaches the CONNECTED position in the LVS (Low Voltage
Switchgear).
Install Position Switch Actuator—AK50 Breaker
Figure 12. AKD-5—AK50, Actuator for Position Switch
Assembly (Exploded View)
8. Make sure that the cassette is in the disconnected state.
This can be verified by checking the racking position status on the window located at the Left side
window on the frame of the AK50 Retrofill cassette. The position switch actuator kit of the AKD5—
19 EntelliGuard R Circuit Breaker Retrofill AKD-5 Installation Manual
The position switch actuator assembly for
the AK50 should be mounted on the
bottom right side of the cassette
assembly. The actuator assembly consists
of a linkage system that interfaces with
the racking shaft assembly at one end
and the position switch actuator arm on
the other. Completing the racking in of the
EntelliGuard breaker into the cassette
corresponds to the end of stroke of the
position switch system in the
compartment for AK50 in AKD-5 LVS.
Figure 12 shows the AK50 position switch
actuator assembly in an exploded view.
The position switch actuator of the AK50
is a field-fit type of assembly and is
assembled on the retrofill cassette before
insertion of the cassette into the
compartment of the AKD-5.
DEH-41547