GE AKR-30 Series Maintenance Manual page 193

SECTION 6-lnterlocks
AKR breakers are equipped with safety interlock devices
that are requi red by Industry Standards and Certifying Au­
thoriti es. I nterlock devices for special applications are also
avai lable as options. The standard interlock devices de­
scri bed below are used only on drawout breakers. Stati on­
ary breakers have no required interlocks.
Caution must be taken to ensure that any interlock lever is
not bent and caused to not function. All interlocks should be
operated to confirm that they function as required.
6 . 1 RACKING MECHANISM INTERLOCK
The function of the racking mechanism interlock is to
prevent the breaker from moving from the CONN ECTED
position before the breaker is in the OPEN position .
The racking mechanism d rive shaft is located behind
the RACKING SCREW cover shown in Fig . 1 4A. This
cover must be slid to the right to gain access to the drive
shaft as shown in Fig. 1 48. When the RACKING SCREW
cover preventing it from being o pened. This link is driven
by the motion of the OPEN/CLOSED indicator as shown in
Fig. 1 5.
CAUTION! Prior to moving rack screw cover over to attach
racking wrench push the manual trip button above the cover.
This will ensure that the breaker is open. Also read breaker
position flag to confirm that breaker is open.
Compartment door should be closed and latched when
racking a breaker from the connect position.
The T R I P button also engages with the RAC K I N G
S C R E W cover in both the OPEN and CLOS E D positions.
Therefore, the T R I P button must be pushed in before the
cover can be opened. This will open the breaker if it was
closed and also depress the OPEN/CLOSED l i n kage
discussed above.
When the RACKI NG SCREW cover is open it holds th e
TR I P button i n . This keeps the breaker tri p-free so a
mechanism closing cycle wi ll not cause contact movement
especi ally when the breaker is being racked in or out.
CAUTION!
Use only the proper racking mechanism
wrench for racking the breaker in or out, otherwise the
trip-free i nterlock featu re may not function.
FIG. 1 4A - RAC KING SCREW
FIG. 1 48
1 5