ABB RELION REX640 Technical Manual page 1452

Measurement functions
8.1.5.8 Technical data
Table 1376: VMMXU Technical data
Characteristic
Operation accuracy
Suppression of harmonics
1452
Value
Depending on the frequency of the voltage
measured: f ±2 Hz
n
At voltages in range 0.01...1.15 × U
±0.5 % or ±0.002 × U
n
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
RMS: No suppression
1MRS759142 F
n
REX640
Technical Manual