S&C Instruction Sheet 775-510
17
Pushbutton Operation
Use the following procedure to operate the various Scada-
Mate SD switch pushbuttons:
STEP 21.
All S&C control units and most control units of
other manufacture have a
Local/Remote
feature. To operate, place the LOCAL/REMOTE
switch inside the control unit to the
Local
position. Refer to the instruction sheet furnished
with the control unit. The switch can now only be
operated locally.
Then, press the OPEN or CLOSE pushbut-
ton as appropriate. See Figure 15. The inter-
rupter OPEN/CLOSED indicator on the end
of the Scada-Mate SD switch base indicates
interrupter contact position: the target with
an “O” indicates the interrupters are in the
Open
position; the target with a “C” indicates
the interrupters are in the
Closed
position.
The indicator does not show status of the
disconnects.
Remote Operation
Use the following procedure to set up the Scada-Mate SD
switch for remote operation:
STEP 22.
Place the LOCAL/REMOTE switch inside the
control unit in the
Remote
position. Refer to the
instruction sheet furnished with the control unit.
The Scada-Mate SD switch can now only be
operated by remote supervisory control. By using
the SCADA system, the dispatcher can test the
electrical operation of the switch and the entire
SCADA control path, including communications.
See Figure 15. The interrupter OPEN/CLOSED
indicator on the end of the Scada-Mate SD switch
base indicates interrupter contact position: the
target with an “O” indicates the interrupters are
in the
Open
position; the target with a “C” indi-
cates the interrupters are in the
Closed
position.
The indicator does not show the status of the
disconnects. See Figure 16.
Figure 16. The optional disconnect.
Figure 15. Operating the switch using the LOCAL/REMOTE switch
inside the CCU.
The switch control includes OPEN/CLOSE
pushbuttons, switch-position indicating
lamps, disconnect closed and latched
indicating lamps, a LOCAL/REMOTE
switch, and an operation counter
Operation—For Switches with Power Operator
Disconnect
Pole-unit
OPEN/
CLOSED
indicator
