S&C ELECTRIC COMPANY
s
INSTRUCTION SHEET
716-501
Page 23 of 26
August 12, 2002
OPERATION
Electrical Operation
Refer to Figure 15.
To open the Circuit-Switcher, press the “TRIP” push
button.
f
The opening latch in the stored-energy mecha-
nism will release, discharging the opening spring. This
action trips the interrupters and forces the opening and
closing pistons in the mechanism downward, as denoted
by movement of the indicator to the “DISCHARGED” win-
dow. The switch-position indicator on the cross base will
move to the “OPEN” position. Further, if the position-indi-
cating lamp option (Catalog Number Suffix “-M”) has been
specified, the green lamp will light.
The motor-driven cam in the stored-energy mechanism
will immediately start rising, thereby charging both the
opening and closing springs; when the opening spring
latches, the indicator will again be visible at the
“CHARGED” window. Simultaneously, the take-off shaft
at the rear of the operator housing will turn to drive the
interphase pipe assembly, opening the disconnect.
To close the Circuit-Switcher, press the “CLOSE” push
button.
f
The motor-driven cam in the stored-energy
mechanism will immediately start retracting. Simulta-
neously, the take-off shaft at the rear of the operator hous-
ing will turn to drive the interphase pipe assembly, closing
the disconnect. When the disconnect has completely
closed, the closing latch will release, discharging the clos-
ing spring. This action closes the interrupters. The switch-
position indicator on the cross base will move to the
“CLOSED” position. Further, if the position-indicating
lamp option has been specified, the red lamp will light.
The Circuit-Switcher may also be electrically operated
via remotely located control switches. No instructions are
included for such operation because control schemes
vary with different installations. With any given installa-
tion, however, it may be possible and desirable to effect
such operation.
Manual Operation
Refer to Figure 15.
To trip the Circuit-Switchers, push the manual trip
lever counterclockwise. The opening latch in the stored-
energy mechanism will release, discharging the opening
spring. This action trips the interrupters and forces the
opening and closing pistons in the mechanism downward,
as denoted by movement of the indicator to the “DIS-
CHARGED” window. The switch-position indicator on the
cross base will move to the “OPEN” position. Further, if
the position-indicating lamp option has been speci-
fied—and operator control voltage is available—the green
lamp will light.
The motor-driven cam in the stored-energy mechanism
will immediately start rising—if operator control voltage
is available—thereby charging both the opening and clos-
ing springs; when the opening spring latches, the indicator
will again be visible at the “CHARGED” window. Simulta-
neously, the take-off shaft at the rear of the operator hous-
ing will turn to drive the interphase pipe assembly,
opening the disconnect.
If operator control voltage is not available, the motor-
driven cam in the stored-energy mechanism will charge
the opening and closing springs—and the take-off shaft
will turn to drive the interphase pipe assembly, opening
the disconnect—when control voltage returns. If desired,
the opening and closing springs can be charged and the
disconnect opened after the interrupters have been
f
Trip and close push buttons are not included on operators specified
with Catalog Number Suffix “-J.” Refer to the “Manual Operation” section.
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