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