Siemens 7SR51 - 10.26 60 CTS‑I CT Supervision - Current Reference

60CTS‑I CT Supervision – Current Reference
Reference
Parameter Value
I
set
Current threshold setting 0.05 to 2 ⋅ I
rated
t
delay
Delay setting 0.03 to 20 s, Δ 0.01 s
20 to 100 s, Δ 0.1 s
100 to 1000 s, Δ 1 s
1000 to 10000 s, Δ 10 s
1000 to 14400 s, Δ 100 s
Current Threshold
Attribute Value
I
op
CT failed current level I
set
: ± 5 % or ± 1 % I
rated
Reset level 90 % I
op
: ± 5 % or ± 1 % I
rated
Repeatability ± 1 %
Variation IEC
60255-1
-10 °C to +55 °C ≤ 5 %
f
rated
± 5 % ≤ 5 %
Operate and Reset Time
Attribute
Value
t
basic
Element basic operate time 30 ms ± 20 ms
t
op
Operate time following delay t
basic
+ t
delay
± 1 % or ± 20 ms
Repeatability ± 1 % or ± 20 ms
10.26
Technical Data
10.26 60CTS‑I CT Supervision – Current Reference
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual 541
C53000-G7040-C014-1, Edition 11.2019