ABB RELION REX640 - Page 1452

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