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T Y P E CO CIRCU I T OP E N I N G R E LAY
4 . DE-ION CONTACTOR SWITCH (CS)
Adjust the core stop on the top as high as pos
sible without allowing the insulating bushing at the
bottom of the plunger to touch the Micarta angle. The
contact will be separated from the Micarta angle by
1 / 3 2 " to 1 / 1 6 " .
Adj ust the contact gap spacing to
slightly less than 1 / 1 6 of an inch .
contact springs so that a firm contact is made but
not so strong that the minimum pick-up value can
not be obtained.
The spring tension should be about
1 5 grams.
Hold
the
relay contacts closed and with an
auxiliary relay coil connected across terminals to
simulate the circuit breaker trip coil, note that the
contactor switch picks up on le ss than 4 amperes .
5. OPERATION INDICATOR (OI)
Pass sufficient current( a-c ) through the operati on
md1cator
to
just operate it.
s houl d not be greater than
mdicator target should drop freel y . To change pickup ,
adjust the core s crew.
1 6
Bend down the
This
va l ue of current
3
am peres. The operation
6. INDICATING INSTANTANEOUS TRIP UNIT
Tl1e making of the c ontacts and target indication
shoul d occ ur at approXImately the same mstant. P os i
tiOn t h e stationary contact for a minimum of
w i pe . The bridging moving contact s h oul d touch both
s tati onary co ntacts simul taneo u s l y .
Appl y s uff1 c1ent current to operate t h e
operatiOn i ndicator target s h oul d dro p free l y .
T he nameplate data will furnish t h e actual c ur
rent range that may be obtained from the
R E N E WA L P ARTS
Repair work can be done most satisfactorily at
the factory.
However, interchangeable parts can be
furnished
to the customers who are equipped for
doing repair work.
When ordering parts , always giv e ,
t h e complete nameplate data.
(liT)
1/3 2 "
liT .
The
unit.
ITT
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