S&C Instruction Sheet 1041-540 25
Switch Control Operation
The
Shots-to-Lockout
feature can be set with a SCADA command, but the feature cannot
be latched with a remote command. The faceplate SCADA CONTROL switch must be in
the
Remote
mode and the AUTOMATIC OPERATION switch set to
Enabled
mode for
the control to accept a remote
Shots-to-Lockout
feature command.
Remote Shots-to-
Lockout
To carry out the
Shots to Lockout
command from the switch control faceplate:
STEP 1.
On the first page of the
SETUP: Automatic Operation
screen, make sure:
• The
Features Enabled
setpoint is set to an option that includes “Sectionalizing.”
• The
Number of Shots Required for Lockout
setpoint is set to the appropriate
number for this switch control.
• The
Shots-To-Lockout Time Threshold
setpoint contains a value higher than zero.
• The
Overcurrent Required before Shots-To-Lockout Operation
setpoint is
set to the appropriate value for this switch control.
STEP 2.
Set the faceplate REMOTE/LOCAL switch to
Local
mode.
STEP 3.
Hold the faceplate automatic operation ENABLE/DISABLE switch in the
Enable
position. This will cause the ENABLED LED to blink while the switch
is held.
STEP 4.
While holding the ENABLE/DISABLE switch in the
Enable
position, toggle the
CLOSE/OPEN faceplate switch (for the circuit being tested) to the
Close
position. This will cause the CLOSED LED for the selected switch to blink. If
the line switch is open, this action closes it.
STEP 5.
Release the ENABLE/DISABLE switch.
If the line switch was previously open:
The
Lockout
mode remains in
effect (and the CLOSED LED continues to blink) for the duration of the
Shots-
To-Lockout Time Threshold
setting. If the appropriate number of voltage
losses is detected during this time, the switch control trips open the switch.
If the line switch was already closed
: The
Lockout
mode remains in effect
(and the CLOSED LED continues to blink) indefinitely. To disable it, toggle the
REMOTE/LOCAL switch to
Remote
mode.
Local Shots-to-
Lockout
