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
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