60Cts-I Ct Supervision - Current Reference - Siemens 7SR51 Device Manual

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