Siemens 7SJ85 - Current-Jump Detection

Current-Jump Detection
Times
Pickup time
Approx. 10 ms + OOT
145
at 50 Hz
Approx. 8 ms + OOT at 60 Hz
Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1 According to specified tolerances
10 Hz ≤ f < 0.9 f
rated
1.1 f
rated
< f ≤ 80 Hz
Slightly expanded tolerances
f < 10 Hz
f > 80 Hz
Inactive
Tolerances
Currents 3 % of setting value or 10 mA (I
rated
= 1 A) or
50 mA (I
rated
= 5 A), (f
rated
± 10 %)
for amplitude changes of sinusoidal measurands
Pulse time 1 % of the setting value or 10 ms
12.55
145
OOT (Output Operating Time) additional delay of the output medium used, for example 5 ms with fast relays
Technical Data
12.55 Current-Jump Detection
SIPROTEC 5, Overcurrent Protection, Manual 1545
C53000-G5040-C017-8, Edition 07.2017