Siemens SIPROTEC 7SJ62 Instruction Manual page 456

Technical Data
Measured Values
Supervision
Trip Log)
Time Stamping
Waveform Capture
Statistics (Circuit
Breaker)
Operating Hours Operating Hours Range
Counter Criterion to Count
10-38
Min/Max Values for Averages
(LOG of Primary Values)
Current Asymmetry
Voltage Asymmetry
Current Sum
Current Phase Sequence
Voltage Phase Sequence
Limit Value Monitor
Recording of indication of the last 8 power system faults
Recording of indication of the last 3 power system ground faults
Resolution for Event Log
(Operational Messages)
Resolution for Trip Log (Fault Records)
Time Deviation (Internal Clock)
Buffer Battery
Recording Time
Sampling Rate for 50 Hz
Sampling Rate for 60 Hz
Saved Number of Trips
Accumulated Interrupted Current
I , I , I , I
Admd Bdmd Cdmd 1dmd
(positive sequence)
S , P , Q
d d d
I /I > I - balance factor, for I > I - bal-
max min
ance limit. Factor and limit are adjustable.
V /V > V - balance factor,for V > V -
max min
balance limit. Factor and limit are
adjustable.
| i +i +i +[k · i ] | > I - sum
a b c
n n
threshold value, adjustable.
k = CT ratio / CT
n n phase
Clockwise (ABC)/ counter-clockwise (ACB)
Clockwise (ABC)/ counter-clockwise (ACB)
I > Limit value I >
a A dmd
I > Limit value I >
b B dmd
I > Limit value I >
c C dmd
I > Limit value I >
1 1 dmd
I < Limit value 37-1
L
cos ϕ < Lower limit value |cos ϕ|<
P > Limit value |P |>
dmd
Q > Limit value |Q |>
dmd
S > Limit value |S |>
dmd
1 ms
1 ms
Maximum 0.01%
Lithium Battery, 3 V / 1 Ah, type CR 1/2 AA
Self-discharging time > 5 years
Message "Fail Battery" if
battery charge is low
Maximum 8 fault records saved
Memory maintained by buffer
battery in case of loss of power supply
Total of 5 s
Pre-event and post-event recording
and memory time adjustable
1 sample/1.25 ms (16 sam/cyc)
1 sample/1.04 ms (16 sam/cyc)
Up to 9 digits
Up to 4 digits (kA) per pole
Up to 7 digits
Current exceeds an adjustable current
threshold (BkrClosed I MIN)
C53000-G1140-C121-1
ratio
7SJ62 Manual