Functions
2.42 Monitoring Functions
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
287
2.42.1.4 Setting Notes
Measured Value Monitoring
Measured value monitoring can be turned ON or OFF at address 8101 MEASURE. SUPERV. In addition, the
sensitivity of measured value monitoring can be modified. Experiential values set ex works are sufficient in most
cases. If especially high operating asymmetry in the currents and/or voltages is to be expected for the applica-
tion, or if it becomes apparent during operation that certain monitoring functions activate sporadically, then the
setting should be less sensitive.
Address 8102 BALANCE U-LIMIT determines the limit voltage (phase-phase), above which voltage symmetry
monitoring becomes effective (see also Voltage Symmetry Monitoring figure). Address 8103 BAL. FACTOR U
is the associated symmetry factor; that is, the slope of the symmetry characteristic curve.
Address 8104 BAL. I LIMIT S1 determines for side 1, address 8106 BAL. I LIMIT S2 for side 2, the
limit current above which current symmetry monitoring becomes effective (see also Current Symmetry Moni-
toring figure). Address 8105 BAL. FACT. I S1 is the associated symmetry factor for side 1, address 8107
BAL. FACT. I S2 for side 2, i.e. the slope of the symmetry characteristic.
Address 8110 ΣI THRESHOLD S1 establishes for side 1 the limit current above which current sum monitoring
(see Current Sum Monitoring figure) is activated (absolute component, referred only to I
N
). Accordingly address
8112 ΣI THRESHOLD S2 applies for side 2. The relative component (referred to maximum phase current) for
triggering the sum current monitoring is set for side 1 under address 8111 ΣI FACTOR S1 and for side 2 under
8113 ΣI FACTOR S2
Address 8108 SUM.thres. U determines the limit voltage above which current sum monitoring becomes
active (see also Current Sum Monitoring figure) (absolute component, referred only to U
N
). The relative com-
ponent for triggering the sum current monitoring is set under address 8109 SUM.Fact. U.
Note
In power system data 1, the voltage earth path and its matching factor Uph / Udelta were specified. Mea-
sured value monitorings will only function properly if the setting there is correct.
2.42.1.5 Settings
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding second-
ary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
8101 MEASURE. SUPERV OFF
ON
OFF Measurement Supervision
8102 BALANCE U-LIMIT 10 .. 100 V 50 V Voltage Threshold for
Balance Monitoring
8103 BAL. FACTOR U 0.58 .. 0.90 0.75 Balance Factor for Voltage
Monitor
8104 BAL. I LIMIT S1 5A 0.50 .. 5.00 A 2.50 A Current Balance Monitor
Side 1
1A 0.10 .. 1.00 A 0.50 A
8105 BAL. FACT. I S1 0.10 .. 0.90 0.50 Balance Factor for Current
Monitor S1
8106 BAL. I LIMIT S2 5A 0.50 .. 5.00 A 2.50 A Current Balance Monitor
Side 2
1A 0.10 .. 1.00 A 0.50 A
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