60Cts & Cts-I Current Transformer Supervision; Reference; Current & Voltage Threshold; Operate And Reset Time - Siemens Argus 7SR21 Technical Manual

7SR21 & 7SR22 Performance Specification
3.3 60CTS & CTS-I Current Transformer Supervision
3.3.1

Reference

Parameter
I Current Threshold
thresh
V Voltage Threshold
thresh
t Delay setting
d
CTS-I
Current Threshold
I
thresh
3.3.2 Current & Voltage Threshold
Attribute
I CT failed current level
op
Reset level
V CT failed voltage level
op
Reset level
Repeatability
Variation
3.3.3

Operate and Reset Time

Attribute
t Basic operate time
basic
Operate time
Repeatability
Unrestricted Page 58 of 68
-10 °C to +55 °C
f - 3 Hz to f + 2 Hz
nom nom
harmonics to f
cutoff
Value
0.05, 0.1... 1 xIn
7, 8... 110V
0.03, 0.04...20.00, 20.50... 100, 101... 1000, 1010...
10000, 10100... 14400 s
0.05, 0.1... 2 xIn
Value
, ± 5% or ± 1% In
100 % I
thresh
± 5% or ± 1% In
90 % I
op,
, ± 2% or ± 0.5 V
100 % V
thresh
, ± 2 % or ± 0.5 V
110 % V
op
± 1 %
£ 5 %
£ 5 %
Value
30 ms ± 20ms
, ± 1 % or ± 20ms
t
basic
± 1 % or ± 20ms
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