finger contacts are wired such that when movable portion is moved
into test or operating position in the cubicle the finger contacts
engage the
stationary
contacts to complete the control circuit for
op
e
ration of
the breaker.
3.11
AUX!LIARY
(Fig. I I )
The
auxiliary
sw!tch (l-15) has been adjusted at the factory and
should normally not require further adjustment. Each rotor ( 1 1-3)
can be adjusted individually in steps of 15 degrees merely by
pressing the contact to one side against the spring and rotating
it
within 1ts insulated rotor housing until it snaps into the
deslred position.
3. 12
iNTERLOCK
PLUNGER (Fig. I )
The foot lever ( 1-20} operates the interlock plunger { 1- 18) as well
as the trip latch and the closing latch. Depressing the lever trips
the breaker, releases the closing spring and raises plunger ( 1- 18)
sufficiently to release the breaker allowing it to be moved in the
cubicle. The interlock ls in proper adjustment when the plunger
(1-18) is positioned to 1- 1 1/16 to 1-13/ 16 above the floor line,
and causes tripping of breaker contacts when it is raised to a level
not more than 2- 1/ 16 above the floor line,
The latch tripping rod associated with the foot lever should be
clear of the trip latch (4-27) by 1/32 to l/ 16. Adjustment is made
by changnng the effective length of the yoke attaching the foot
lever to the interlock plunger.
The Interlock rod (4-3 1) should not touch the closing arm (4-29)
until after the breaker is trip free. Adjustment is made by changing
the effective length of the eyebolt connecting the foot lever to the
interlock rod,
3. 13 OPERATOR CONTROL (Fig. 8)
The normal control for this operator has been incorporated in one
swJtch assembly located at the rear of the unit.
It consists of two
heavy duty toggle switches
(6)
operated by a common linkage
(J)
from
the main closing springs and one heavy duty toggle switch (6)
operated by a cam (2) driven by the main gear.
Referring to the breaker wiring diagram furnished with the installation,
the 88-J and 88-2 switches are shown with the main closing springs dis
charged. The 88-3 switch is operated by the cam (2) on the main gear.
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