Operating Times of the Definite Time Stages
7UT612
Pickup time / dropout time
for frequency 50 Hz 60 Hz
Minimum pick-up time
Pick-up time, typical
50 ms
55 ms
45 ms
50 ms
Dropout time, approx. 30 ms 30 ms
7UT613/63x
Pickup time / dropout time
Pickup time at frequency 50 Hz 60 Hz 16.7 Hz
Pickup time,- 2 x Pickup Value
1
)
Pickup time,- 10 x Pickup Value
1
)
45 ms
40 ms
39 ms
39 ms
113 ms
88 ms
Dropout time, approx. 25 ms 21 ms 51 ms
1
) for high-speed relays, the pick-up times decrease by 4.5 ms
Dropout to Pickup Ratios
Current stages
approx. 0.95 for Ι
2
/Ι
N
≥ 0.5
Frequency
Frequency influence
within the frequency tagging range
Dropout times of the thermal curve
[ausloesezeiten-thermische-kennlinie-schieflast-020830-ho, 1, en_GB]
Figure 4-13
Trip times of the Thermal Characteristic for Unbalanced Load Protection
Technical Data
4.8 Unbalanced Load Protection
SIPROTEC 4, 7UT6x, Manual 433
C53000-G1176-C230-5, Edition 09.2016
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