PART 5
ACCESSORIES
SHOWN AS ARC
CONTACTS MAKE
11
SHOWN FULLY OPEN
Figure 13
The shunt
trip attachment is mounted directly above the
trip shaft. It is a non-adjustable
intended
for intermittent duty only, and its circuit should
inter-
rupted only by an auxiliary contact.
SHUNT CLOSE
12
STORED ENERGY MECHANISM
Check latch engagement and adjust if necessary
min. of
latch surface contact. Make
springs
in place and in good condition. On
breakers, remove motor to make
is
free and well lubricated. Reinstall motor. Make
that
retaining
in place.
Check
mechanism to insure
that all moving parts ate free and well
MECHANISM
Make
that all retaining
and springs
in place
and that the mechanism is free. Replace nylon bumper
rollers if excessive
is evident. Make sure that the
operating mechanism
when stored energy mech-
anism is
slowly and that the trip shaft is free. It
should take no more than 22
inches of torque to
trip the breaker.
GENERAL
Make
that
current carrying parts
secured and
The shunt close attachment is mounted on top of the stored
associated hardware is tight. Basket and finger assembly
energy mechanism and is used to electrically discharge the
should be secured but free enough to compensate for
stored energy mechanism and thus
close the breaker. It
alignment in cell. The free up and down movement should
is a non-adjustable intermittent duty device and its circuit
be approximately
should be interrupted by an auxiliary contact.
