Reporting accuracy – Rockwell Automation 193-EC4 EC4 Current Monitoring Relay User Manual User Manual
Page 82
Rockwell Automation Publication 193-UM011A-EN-P - September 2010
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Current Monitoring Parameters Chapter 6
➊ 0 A is reported when the actual current is below the indicated minimum reporting current.
➋ The E3 is capable of reporting higher currents, but reporting accuracy is compromised.
Reporting Accuracy
Table 20 - Current Reporting Summary (with indicated precision)
FLA Setting Range
[A]
CT Ratio
Min. Reporting
Current [A] ➊
Max Reporting
Current [A] ➋
0.4…2.0
—
0.15
14.40
1…5
—
0.30
36.00
3…15
—
0.90
108.00
5…25
—
1.50
180.00
9…45
—
3.0
360.0
18…90
—
6.0
720.0
9…45
50:5
3
360
18…90
100:5
6
720
28…140
150:5
9
1080
42…210
200:5
12
1440
60…302
300:5
18
2160
84…420
500:5
30
3600
125…630
600:5
36
4320
172…860
800:5
48
5760
240…1215
1200:5
72
8640
450…2250
2500:5
150
18000
1000…5000
5000:5
300
32767
Table 21 - Current Reporting Accuracy
FLA Setting Range
Operating Range
100% Min. current rating…
720% Max. current rating
50% Min. current rating…
100% Min. current rating
0.4…2.0 A
±10%
—
All others
±6%
±10%
IMPORTANT
The accuracy specified above is only applicable to non-distorted
sinusoidal currents.