ABB REG316 4 Series Operating Instructions Manual page 658

ABB Switzerland Ltd
Utility Automation
Technical Data Func-
Technical Data Func-
tions (cont'd)
tions (cont'd)
Numerical generator protection
Table 46: Accuracy of the metering function UIfPQ and three-phase measuring module
(including input voltage and input current c.t.)
Input variable
Core balance c.t.s
with error compensation
Voltage ±0.5% U
Current ±0.5% I
Real power ±0.5% S
Apparent power ±0.5% S
Power factor ±0.01
Frequency ±0.1% f
× ×
Ö3
S U I (three-phase)
N = N N
× × ×
Ö3
S = 1/3 U I (single-phase)
N N N
Accuracy
Protection c.t.s
without error com-
pensation
±1% U
N N
±2% I
N N
±3% S
N N
±3% S
N N
±0.03
±0.1% f
N
REG316*4
1MRK502004-Ben
Conditions
0.2 to 1.2 U
N
f = f
N
0.2 to 1.2 I
N
f = f
N
0.2 to 1.2 S
N
0.2 to 1.2 U
N
0.2 to 1.2 I
N
f = f
N
S = S , f = f
N N
0.9 to 1,1 f
N N
0.8 to 1,2 U
N
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