Functions
2.24 Monitoring Functions
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
437
2.24.1.7 Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Additional 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
2901 MEASURE. SUPERV ON
OFF
ON Measurement Supervision
2902A BALANCE U-LIMIT 10 .. 100 V 50 V Voltage Threshold for
Balance Monitoring
2903A BAL. FACTOR U 0.58 .. 0.95 0.75 Balance Factor for Voltage
Monitor
2904A BALANCE I LIMIT 1A 0.10 .. 1.00 A 0.50 A Current Balance Monitor
5A 0.50 .. 5.00 A 2.50 A
2905A BAL. FACTOR I 0.10 .. 0.95 0.50 Balance Factor for Current
Monitor
2906A ΣI THRESHOLD 1A 0.10 .. 2.00 A 0.25 A Summated Current Moni-
toring Threshold
5A 0.50 .. 10.00 A 1.25 A
2907A ΣI FACTOR 0.00 .. 0.95 0.50 Summated Current Moni-
toring Factor
2908A T BAL. U LIMIT 5 .. 100 sec 5 sec T Balance Factor for
Voltage Monitor
2909A T BAL. I LIMIT 5 .. 100 sec 5 sec T Current Balance Monitor
2910 FUSE FAIL MON. ON
OFF
ON Fuse Failure Monitor
2911A FFM U>(min) 10 .. 100 V 30 V Minimum Voltage Thresh-
old U>
2912A FFM I< (max) 1A 0.10 .. 1.00 A 0.10 A Maximum Current Thresh-
old I<
5A 0.50 .. 5.00 A 0.50 A
2913A FFM U<max (3ph) 2 .. 100 V 15 V Maximum Voltage Thresh-
old U< (3phase)
2914A FFM Idelta (3p) 1A 0.05 .. 1.00 A 0.10 A Delta Current Threshold
(3phase)
5A 0.25 .. 5.00 A 0.50 A
2915 V-Supervision w/ CURR.SUP
w/ I> & CBaux
OFF
w/ CURR.SUP Voltage Failure Supervi-
sion
2916A T V-Supervision 0.00 .. 30.00 sec 3.00 sec Delay Voltage Failure Su-
pervision
2921 T mcb 0 .. 30 ms 0 ms VT mcb operating time
2931 BROKEN WIRE ON
OFF
Alarm only
OFF Fast broken current-wire
supervision
2933 FAST Σ i SUPERV ON
OFF
ON State of fast current sum-
mation supervis
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