712-502 50
CIRCUIT-SWITCHER START-UP AND CHECK-OUT
Step 70
Crank the manual operating handle on the Mark
VI CS-1A Switch Operator until the disconnect
is in the fully “OPEN” position. Visually inspect
the blade to confi rm it is open. See Figure 69.
For instructions on using the manual operating
handle refer to Step 50.
Step 71
Verify that the interrupters are in the “OPEN”
position and that each gas-pressure gauge on
the underside of the interrupter is in the “OK”
to operate zone. See Figure 70.
NOTICE
The gas-pressure gauge needle should be
in the “OK” to operate zone. If the gauge is
not in this position, stop the installation and
notify S&C Electric Company.
Step 72
Reconnect control power to the operator by
replacing the fuseholder in the CS-1A Switch
Operator. The charging motors should begin
closing and charging the interrupter.
NOTICE
The interrupter charging motors have a
“return-to-home” feature. In the event
that control power is disconnected during
an interrupter charging operation, upon
restoration of control power, the circuit
will prompt the motors to return to “home”
position:
• If control power is disconnected prior to
the interrupters being latched and closed,
the motor will return to the start of the
charging cycle (“home” position) and the
interrupter indicators will read “OPEN”
and discharged before the charging cycle
automatically begins again.
• If control power was disconnected after
the interrupters were latched and closed,
the motor will back out to the “home”
position and the interrupter indicators
will read “CLOSED” and charged.
Blades
Figure 69. Switch with disconnect in open position.
“OK” to operate
zone
Figure 70. Check that the indicator reads “OPEN.” Check that the gas-
pressure gauge on each interrupter is in the “OK” to operate zone.
