GE AK-1-15 Instructions Manual page 28

GEM-1S07 Air Circuit Breakers Type AK-1-15 and AK-1-25
ADJUSTMENTS
When the proper amount of contact pressure is
exerted against the stationary stud, the dimension
from the top side of the upper washer to the bottom
side of the lower washer on screw (1) should be
approximately 3-31/32" for AK-1-15 breakers and
3-29/32" for AK-1-25 'breakers. To adjust for
proper contact pressure, the nuts on the bottOm of
screw (1) should be backed off or advanced, as
required. This adjustment should only be made on
replacement disconnects, not on those which are
factory assembled. When set at the factory, an
accurate pressure gage is used, and resetting to the
dimensions given will make the adjustment less
accurate in this instance.
SECONDARY DISCONNECTS, FIG. 26
The secondary disconnects (see Fig. 26 and (1)
Fig. 25) serve as cOnnections between breaker
control circuit elements and external control cir-
cuits. They are used only ondrawouttype breakers.
A conventional terminal board serves the same
purpose on stationary mounted and general purpose
enclosure mounted breakers. The secondary dis-
connects allow removal of the breaker without the
necessity of having to detach external connections.
The movable part of the secondary disconnect
consists
of
an insulating bpdy which holds a con-
ducting, spring loaded plunger. As the breaker
moves into its enclosure the plunger is cammed ,))
inward by the stationary part of the disconnect.
I ,
Replacement of Movable Secondary Disconnects
1. Unfasten disconnect body from drawout
carriage.
2. Open tabs which hold wires on imler side.
3. Pull contact tip loose from hollow tube.
4. Remove contact tip by cutting wire at its
base.
5. Push wire through hollow tube of new dis-
connect assembly. '
6. Strip insulation oft end of wire to about 1/4
of an inch from 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
o~er
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 fibre spacers
over inner ends of the tubes and spreading
tabs. (See Fig. 26).
11. When all wires have been connected, re-
fasten the body of the assembly to the breaker
drawout carriage.
•
,
____ CONTACT
...--- TIP
----WiRE
TABS
-
~
=
-
Fi g. 26 bsetllbly of Movable Portion of Secondal')' Disconnects
28