GEI-88767
2.
Check all items listed under Adjustments before the switch is put
in operation and during each period of maintenance.
DESCRIPTION OF OPERATION SE-lOOE AND SE-lOOS
On the SE-lOOE and SE-lOOS switches both the closing and opening opera
tion is accomplished by the spring-charged mechanism (6) Fig. 1 located
on the front of the switch assembly. The mechanism is manually or el-
ectrically charged but is completely disengaged from the operating han-
dle as it begins to operate the switch. In this way the actual opera-
tion of the switch is independent of the operator.
When operating either switch manually, the handle should be rotated
with a positive motion throughout its entire stroke.
Closing the SE-lOOS switch, and the SE-lOOE switch set for manual opera
tion, is accomplished by inserting the operating handle (1) Fig. 3 into
the handle socket provided in the operating hub (7) Fig. 1 in the en
closure and rotating in a counterclokwise direction as far as possible
{approximately 180 degrees).
After a few degrees of handle rotation, the mechanism will engage the
primary spring (4) Fig. 1 located on the right side and compress it
fully. Continued rotation of the handle will push the spring over the
toggle position and it will start to discharge.
A
driving lug
(5)
Fig.
2
will engage the drive crank (3), which is directly connected
to the main crank shaft (11) Fig.
2,
just as the primary spring leaves
the toggle position. When the main crank shaft has rotated a few de
the fully charged booster spring, located on the left side,
Fig. 1 will pass its toggle position and the full energy of both
springs will close the switch with sufficient force to close and latch
against the current rating on the nameplate.
During the closing operation the auxiliary blade will be held out of
the chute until just before the arcing contacts (6) Fig. 7 are engaged,
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strike in the interrupting area of the arc chute.
At any time during the operation, until the primary spring reaches its
toggle position, the handle can be returned to its starting posi�ion
and removed. The mechanism will completely reset to the starting posi
tion.
The SE-lOOE switch is normally electrically operated by energizing a
motor
(2)
Fig. 10.
An
internal gear driving mechanism will charge the
springs and operate the switch in the same manner as the mechanical
l'B
ndle drive.
4
