Functions
2.5 Monitoring Functions
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
72
2.5.1.6
Setting Notes
Measured Value Monitoring
The sensitivity of the measured value monitor can be modified. Default values are set at the factory, which are
sufficient in most cases. If especially high operating asymmetry in the voltages is to be expected for the appli-
cation, or if it becomes apparent during operation that certain monitoring functions activate sporadically, then
the setting should be less sensitive.
Address
8102
BALANCE V-LIMIT
determines the limit voltage (phase-to-phase) above which the voltage
symmetry monitor is effective. Address
8103
BAL. FACTOR V
is the associated symmetry factor; that is, the
slope of the symmetry characteristic curve. In address you set the delay time of fault message no. 167
„Fail
V balance“
.
Measured value monitoring can be set to
ON
or
OFF
at address
8101
MEASURE. SUPERV
.
2.5.1.7
Settings
2.5.1.8
Information List
Addr.
Parameter
Setting Options
Default Setting
Comments
5201
VT BROKEN WIRE
ON
OFF
OFF
VT broken wire supervision
5202
Σ
V>
1.0 .. 100.0 V
8.0 V
Threshold voltage sum
5203
Vph-ph max<
1.0 .. 100.0 V
16.0 V
Maximum phase to phase voltage
5204
Vph-ph min<
1.0 .. 100.0 V
16.0 V
Minimum phase to phase voltage
5205
Vph-ph max-min>
10.0 .. 200.0 V
16.0 V
Symmetry phase to phase voltag-
es
5208
T DELAY ALARM
0.00 .. 32.00 sec
1.25 sec
Alarm delay time
8101
MEASURE. SUPERV
OFF
ON
ON
Measurement Supervision
8102
BALANCE V-LIMIT
10 .. 100 V
50 V
Voltage Threshold for Balance
Monitoring
8103
BAL. FACTOR V
0.58 .. 0.90
0.75
Balance Factor for Voltage
Monitor
No.
Information
Type of In-
formation
Comments
167
Fail V balance
OUT
Failure: Voltage Balance
171
Fail Ph. Seq.
OUT
Failure: Phase Sequence
176
Fail Ph. Seq. V
OUT
Failure: Phase Sequence Voltage
197
MeasSup OFF
OUT
Measurement Supervision is switched OFF
253
VT brk. wire
OUT
Failure VT circuit: broken wire
255
Fail VT circuit
OUT
Failure VT circuit
256
VT b.w. 1 pole
OUT
Failure VT circuit: 1 pole broken wire
257
VT b.w. 2 pole
OUT
Failure VT circuit: 2 pole broken wire
6509
>FAIL:FEEDER VT
SP
>Failure: Feeder VT
6510
>FAIL: BUS VT
SP
>Failure: Busbar VT