Siemens SIPROTEC 7SJ61 - Page 363

Technical Data
4.20 Additional Functions
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
363
Operating Hours Counter
Circuit Breaker Maintenance
Trip Circuit Monitoring
Commissioning Aids
Clock
Display Range Up to 7 digits
Criterion Overshoot of an adjustable current threshold (element 50-1, BkrClosed I MIN)
Calculation methods on true r.m.s value basis: ΣI, ΣI
x
, 2P;
on instantaneous value basis: I
2
t
Acquisition/conditioning of measured values phase-selective
Evaluation one threshold per subfunction
Number of saved statistic values up to 13 digits
With one or two binary inputs.
- Phase rotation field check
- Operational measured values
- Circuit breaker test by means of control function
- Creation of a test measurement report
Time Synchronization DCF 77/IRIG B-Signal (telegram format IRIG-B000)
Binary Input
Communication
Operating Modes for Time Tracking
No. Operating Mode Explanations
1 Internal Internal synchronization using RTC (presetting)
2 IEC 60870-5-103 External synchronization using system interface (IEC 60870-5-103)
3 PROFIBUS FMS External synchronization using PROFIBUS interface
4 Time signal IRIG B External synchronization using IRIG B
5 Time signal DCF77 External synchronization using DCF 77
6 Time signal Sync. Box External synchronization via the time signal SIMEAS-Synch.Box
7 Pulse via binary input External synchronization with pulse via binary input
8 Field bus (DNP, Modbus) External synchronization using field bus
9 NTP (IEC 61850) External synchronization using system interface (IEC 61850)