Drawout Mechanism - GE AK-2-50 Maintenance Manual

5. Push wire through hollow tube of new
di$connect assembly.
. 6~ Strip in&ulation off end of wire to about
1/4 in. from the end.
7.
Place new contact tip on end of wire
and crimp.
8.
Pull wire through hollow tube until contact
tip fits snugly against· end of hollow tube.
9.
Crimp tab on other side of assembly to
hold wire in place.
10. Any hollow tubes which are not used should
be pushed into the disconnect body and held in
that position by. placing fiber spacers over inner
ends of tubes and spreading tabs.
11.
When
all
wires have been connected, refasten
the body of the movable disconnect assembly to the
breaker cross-channel.
· DRAWOUT MECHANISM .
(FIG •.
43)
Drawout breakers are furnished with a drawout
mechanism which facilitates the inserting and
withdrawing of the breaker from its enclosure.
It
provides a suitable menas of forcing the breaker
through the part of the inserting and withdrawal ·
operations when the stationary and movable halves
of the disconnects . engage and _ disengage. For
complete details of inserting and withdrawing
the breaker, such as the nuinber of racking handle
strokes required to install or withdraw the breaker,
refer to instruction ezEK-'Z302 furnished with the
breaker. ·
The . ctr· a wout mechanism is · e quipped with a
drawout· t rip interlock which prevents a racking
operation from being performed wlien the breaker
is closed. Ins erting the breaker into the housing.
causes the racking ·pins. on the housing to engage
the semi- circular slot in the racking c~m (4).
In this position the breaker is ready to be fully
racked-in by operating the racking handle (1).
The · first upward stroke of the racking· handle
causes the racking pin on the housing to engage
the trip interlock link and pin assembly (2, 3),
rotating the
link
(2) and causing the pin (3) to
move upward against the adjusting ~crew on the
interlock trip paddle. This trips the breaker -and
. holds it trip-free during the entire racking_ opera ..
tion. The fifth and . final stroke of the racking
handle releases the· trip interlock and allows the _
breaker to be closed, . since the breaker is now\
fully racked-in . .
ADJUSTMEN'J'.S
(Fig. 43)
One adjustment on the trip interlock is re:.
quired. With the breaker mechanism in the re-
set .position and the racking cam (4) not engaging
the ·racking ~ins on the housing, there should
be at least 1/8in. clearance between the top edge
.. of the trip interlock pin (3) and the adjusting
screw on the interlock trip.
Low Voltage Power Circuit Breakers GEK-7303
Fig. 43 (8026230) Typical drawout mechanism
1.
Racking Handle
2.
Link
.
3. Pin .
4.. Racking Cam
Fig. 44 (8039672) AK-3A-50
1. Racking Pins
The Drawout Mechanism for AK-2A/3A -50,
75, 100 Breakers is located in the equipment. Four
racking pins (1) Fig. 44, two on either side of the
breaker are furnished to facilitate the drawout
mechanism tray in the equipment.