Siemens SIPROTEC 7UT613 series Manual page 454

4 Technical Data
Operating Times of the Definite Time Stages
Dropout to Pickup Ratios
Inrush Restraint
Frequency
454
Pickup time / dropout time
Pickup time at frequency
without inrush restraint, min.
with inrush restraint, min.
Dropout time, approx.
1
) for high-speed relays, the pick-up times decrease by 4.5 ms
Current stages
Inrush restraint ratio
(2nd harmonic) I
/I
2fN fN
Lower operation limit
Max. current for restraint
Secondary values for I
1)
N
Frequency influence
50 Hz
1
) 11 ms
1
) 33 ms
35 ms
approx. 0.95 for I/I
10 % to 45 %
I > 0.2 A
0.30 A to 25.00 A
= 1 A; for I
= 5 A the currents must be multiplied by 5.
N
within the frequency tagging range
60 Hz 16.7 Hz
11 ms 16 ms
29 ms 76 ms
35 ms 60 ms
≥ 0.5
N
Steps 1 %
1)
1)
Steps 0.01 A
7UT613/63x Manual
C53000-G1176-C160-2