Siemens SIPROTEC 7SJ61 - Page 362

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