S&C Instruction Sheet 1041-540 29
Overcurrent Fault Protection
Phase imbalance w. reclose enabled; Waiting
The switch control detected a phase imbalance while
Automatic Reclose
mode was
enabled. The control tripped open the line switch and is now waiting for three-phase
voltage to return.
Note:
When full voltage returns, the control will start the
Automatic Reclose
timer.
When voltage is continuously present for the full count of the timer, the control will
reclose the switch.
Switch closed; Operator action; Reclose canceled
While the switch control was waiting for three-phase voltage to return, with
Automatic
Reclose
mode enabled, an operator manually closed the line switch from the faceplate
or via SCADA command. This operator action canceled the pending
Automatic Reclose
operation.
Voltage OK after imbalance; Voltage restored; Waiting
After the switch control tripped open the switch because of a phase imbalance, three-
phase voltage returned. Because
Automatic Reclose
mode was enabled, the control
started the
Automatic Reclose
timer. The control is waiting for the timer to expire.
Note:
When the
Automatic Reclose Time
setpoint value is reached, the control will
close the switch.
Imbalance corrected w. reclose enabled; CLOSE executed
After the switch control tripped open the switch because of a phase imbalance, three-
phase voltage was restored and remained present for the full count of the
Automatic
Reclose
timer. Because
Automatic Reclose
mode was enabled, the control reclosed
the switch.
No OC before VL; Voltage Loss Only count reached
The switch control detected a three-phase voltage outage that was not preceded by an
overcurrent fault. Sectionalizing on voltage loss only is enabled, and the
Recloser Counts
to Trip, Voltage Loss Only
value has been reached.
Open operation executed on Voltage Loss Only
Sectionalizing on voltage loss only is enabled, and the
Recloser Counts to Trip, Voltage
Loss Only
value has been reached. The switch control sent the command to open the
switch.
Sectionalizing disabled on Voltage Loss Only; None
The necessary criteria for sectionalizing on voltage loss only have been reached, but the
feature is disabled. Neither a count of voltage losses nor an extended voltage loss will
cause an operation.
Reclose memory time limit; Extended Volt Loss; OPEN
The reclose memory time limit expired without the restoration of voltage on any phase.
This constitutes an extended voltage-loss condition. The switch control opened the switch.
Shots-to-lockout latched on
An operator enabled the
Shots to Lockout
operation on a closed switch. The switch
control will open the switch if the detected three-phase voltage count equals the
Number
of Shots Required for Lockout
value.
Successful reclose; Sequence ended; Count reset
The
Successful Reclose Reset Time
timer has expired. The switch control will consider
future events to be part of a different event sequence.
Note:
The switch control always displays this message when the timer expires.
