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Figure 77

22. 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)

23. Continue rotating the racking handle clockwise until the position indicator first shows

TEST, then CONNECTED.

NOTE 1: When approaching the CONNECTED position, effort to turn the racking

handle increases as the primary finger clusters engage with the AKD-5 bus

stabs.

Cassette Position Indicator

24. 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.

25. 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.

26. Remove and store the racking handle in its storage location.

Note that the circuit breaker is now ready for normal operation

21 - AK/AKT50 Kirkey Interlock

The Emax 2.2 Retrofill circuit breakers provided as replacements for AK/AKR circuit breakers

have a trip interlock feature which will function using the 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 label on inside of the compartment door (figure

67). Following 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.

For detail instructions for AKD-5 , 600A & 1600A for CiC solution refer Kir Key installation

& operation manual 2TSA451013P0000

Indicator Position Location

(DISCONNECTED, TEST & CONNECTED)

ABB Emax 2 Installation And Maintenance Guide

Other manuals for ABB Emax 2