ABB EntelliGuard AKD-5 Installation Manual page 35

Figure 40. Crank or Racking Handle Inserted
26. As the breaker approaches the TEST position, check the alignment of the fixed and moving parts
of the secondary disconnect contacts. (If a motor-spring charge or under-voltage release is
installed, the device may operate when approaching the TEST position)
27. Continue rotating the racking handle clockwise until the position indicator first shows TEST,
then CONNECTED.
When approaching the CONNECTED position, effort to turn the racking handle increases as the
primary finger clusters engage with the AKD-5 bus stabs..
28. Keep cranking until reaching a positive stop. Full travel is about 37 turns and about 3 turns after
the indicator first shows Connected.
At this point, the fingers at the back of the circuit breaker should be properly engaged on the bus
stabs of the AKD-5 switchgear.
29. Using a light and mirror try to make an observation of the primary disconnect fingers to be sure
they are making good contact on the flat portions of the switchgear bus stabs.
30. Remove and store the racking handle in its storage location.
31. Note that the circuit breaker is now ready for normal operation.
AK/AKT-50 – Kirk Key Interlock
The EntelliGuard R retrofill circuit breakers provided as replacements for WavePro 1600A-2000A frame
circuit breakers have a trip interlock feature which will function using the AK/AKT-50 compartment
mounted Key Interlock. A label is provided with full instructions on how to operate the Legacy Key
Interlock. It is suggested to apply the label on the inside of the compartment door
is a brief summary of how the Key Interlock system is operated.
To activate the key interlock:
1) OPEN the breaker.
2) Rotate the screw on the lower front panel of the cassette which normally allows access to
the racking screw. This will hold the breaker trip free.
3) While the screw is held rotated Clockwise, the Key Interlock slide in the switchgear is pushed
inward, elevating a pin on the left side of the breaker.
4) Turn the key to the key removal position, extending the bolt and lock the breaker in the OPEN
position.
33 EntelliGuard R Circuit Breaker Retrofill AKD-5 Installation Manual
(Figure 30). Following
DEH-41547