RAPID
0.
C.
0.
OPERATION
POSITION A
1
------TRIP MAGNET ENERGIZED TO OPEN
-
MECHANISM. TRIP
a
EXHAUST PILOT
MAGNETIC PILOT
11
-T-1
MAGNETS DE-ENERGIZED TO PERMIT
ENERGIZED TO ADMIT
RECLOSING.
'" '0
"OCOSE
"""·
0
MECHANISM OPENING
a
IN POSITION TO RECLOSE
WITH MECHANICAL THROTTLE CONTROL FULL OPEN
POSITION B
MAGNETIC PILOT----"-
�
:
�
�
�I
VALVE CLOSED
L0-
...1
AUTOMATIC EXHAUST
VALVE CLOSED
MECHANISM RECLOSED
POSITION C
r%-1
._----TRIP MAGNET ENERGIZED
MAGNETIC PILOT-----
�
:
�
1
VALVE CLOSED
LD_
�
AUTOMATIC EXHAUST
VALVE OPEN
MECHANISM OPENED
FIG. 6.
Schematic Sequence Diagram of Rapid Reclosing Operation
roller on the main lever. At this point check to see
that the latch has approximately 1/16" travel re
maining and is not jamming against the roller. If
this travel is not obtained, it is an indication that the
latch compression springs are going solid; this may
be corrected by adding an additional washer under
each side of the spring mounting block. The castle
nut on the stud through the springs is for assembly
only, and should be backed out and locked far
enough to allow spring pressure on the latch in
either position.
should be 5/64"-6/64" as indicated on Fig. 1, and
may be adjusted by screwing the trigger stop in or
out. With the jack just snug and ready to take the
load check to see that the trip plunger has 1 /32" to
1/16" free travel before striking the trigger, and
when raised up all the way that there is approxi
mately 1/32" clearance for the heel of the latch to
slide down along the trigger. Close the mechanism
completely so that the main lever rests against the
mechanism stop and check to see that the pawl
lever has 1/16" additional travel.
With the mechanism closed and no load on the
jack, check the horizontal overlap between the
latching surfaces of the latch and trigger_ This
10
With the breaker open, check the overtravel of
the latch as indicated on Fig. 1. This vertical clear
ance between the latch and trigger should be be-
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