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14.3.8.4
Settings
Table 416:
SXSWI Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
tStartMove
0.000 - 60.000
s
0.001
3.000
Supervision time for the apparatus to
move after a command
tIntermediate
0.000 - 60.000
s
0.001
15.000
Allowed time for intermediate position
AdaptivePulse
Not adaptive
Adaptive
-
-
Not adaptive
Output resets when a new correct end
position is reached
tOpenPulse
0.000 - 60.000
s
0.001
0.200
Output pulse length for open command
tClosePulse
0.000 - 60.000
s
0.001
0.200
Output pulse length for close command
SwitchType
Load Break
Disconnector
Earthing Switch
HS Earthing Switch
-
-
Disconnector
1=LoadBreak,2=Disconnector,
3=EarthSw,4=HighSpeedEarthSw
InitialCount
0 - 20000
-
1
0
Initial number of operations (Initial count
value)
14.3.8.5
Operation principle
The users of the Circuit switch (SXSWI) are other functions such as for example,
switch controller, protection functions, autorecloser function, or a 61850 client
residing in another IED or the operator place. SXSWI executes commands, evaluates
block conditions and evaluates different time supervision conditions. Only if all
conditions indicate a switch operation to be allowed, SXSWI performs the execution
command. In case of erroneous conditions, the function indicates an appropriate
"cause" value, see Table
.
SXSWI has an operation counter for closing and opening commands. The counter
value can be read remotely from the operator place. The value is reset from a binary
input or remotely from the operator place by configuring a signal from the Single Point
Generic Control 8 signals (SPC8GAPC), for example.
Also, the health of the external equipment, the switch, can be monitored according to
IEC 61850-8-1.
Local/Remote switch
One binary input signal LR_SWI is included in SXSWI to indicate the local/remote
switch position from switchyard provided via the I/O board. If this signal is set to
TRUE it means that change of position is allowed only from switchyard level. If the
signal is set to FALSE it means that command from IED or higher level is permitted.
When the signal is set to TRUE all commands (for change of position) from internal
IED clients are rejected, even trip commands from protection functions are rejected.
The functionality of the local/remote switch is described in Figure
1MRK502052-UEN B
Section 14
Control
731
Technical manual
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