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CET Electric Technology
Appendix D - Accuracy Specifications
Parameters
Accuracy
Resolution
Mains Voltage
±0.2%
0.01V
Mains I1 - I4
±0.2%
0.001A
kW, kVA
IEC 62053-22 Class 0.5S for Mains
IEC 62053-21 Class 1 for Branches
0.001k
kWh, kVAh
0.1kXh
kvar, kvarh
IEC 62053-23 Class 2
0.1kvar/kvarh
P.F.
±1.0%
0.001
Frequency
±0.02 Hz
0.01Hz
Harmonics
IEC 61000-4-7 Class B
0.01%
K-Factor
IEC 61000-4-7 Class B
0.01
RTD
±1.0°
0.1°