Siemens SIPROTEC 7SJ61 Manual page 362

Technical Data
4.20 Additional Functions
Local Measured Values Monitoring
Current Asymmetry
Total current, quick monitoring function with
protection blockage
Current Phase Sequence
Limit Value Monitorings
Fault Event Recording
Recording of indications of the last 8 power system faults
Time Allocation
Resolution for Event Log (Operational Annuncia-
tions)
Resolution for Trip Log (Fault Annunciations)
Maximum Time Deviation (Internal Clock)
Battery
Fault Recording
maximum of 8 fault records saved; memory maintained by buffer battery in case of loss of power supply
Recording Time
Probing
Statistics
Saved Number of Trips
Number of Automatic Reclosing Commands
(segregated according to 1st and ≥ 2nd cycle)
Accumulated Interrupted Current (segregated according to pole)
Motor Statistics
Total number of motor startups
Total operating time
Total down-time
Ratio operating time / down-time
Motor startup data:
– Startup time
– Startup current (primary)
362
/I > balance factor, for I > I
I
max min
| i + i + i + k · i | > limit value
A B C I E
Clockwise (ABC) / counter-clockwise (ACB)
> limit value I >
I
A Admd
> limit value I >
I
B Bdmd
> limit value I >
I
C Cdmd
> limit value I >
I
1 1dmd
I < limit value I <
L L
1 ms
1 ms
0.01 %
Lithium battery 3 V/1 Ah, type CR 1/2 AA
Message „Battery Fault" for insufficient battery charge
Total 20 s
Pre-event and post-event recording and memory time adjustable
16 samples (instantaneous values) per cycle
0 to 9999
0 to 99999 h
0 to 99999 h
0 to 100 %
of the last 5 startups
0.30 s to 9999.99 s
0 A to 1000 kA
C53000-G1140-C210-1, Release date 02.2008
balance limit
Up to 9 digits
Up to 9 digits
Up to 4 digits
Resolution 1
Resolution 1 h
Resolution 1 h
Resolution 0.1 %
Resolution 10 ms
Resolution1 A
SIPROTEC, 7SJ61, Manual