Siemens SIPROTEC 7UT613 series Manual page 440

4 Technical Data
Feeder Current Guard (Busbars, Short Lines)
Operating Time (Busbars, Short Lines)
Operating Range Frequency (Busbars, Short Lines)
440
Delay of blocking of differential current
T
Monit
Trip release by feeder current guard
Pickup time / dropout time with single-side infeed
Pickup time at frequency
I high-speed relays
> min
Diff
high-speed relays
I high-speed relays
>> min
Diff
high-speed relays
Dropout time, approx.
Dropout ratio
Frequency influence within the frequency tagging range
1 s to 10 s
I>
/I 0.20 to 2.00
Guard NObj
or 0 (always
released)
50 Hz 60 Hz
11 ms 11 ms
6 ms 6 ms
11 ms 11 ms
6 ms 6 ms
54 ms 46 ms
approx. 0.7
Steps 1 s
Steps 0.01
16.7 Hz
18 ms
13 ms
18 ms
13 ms
150 ms
see Figure 4-5
7UT613/63x Manual
C53000-G1176-C160-2