ABB REG630 - Page 51

Measurement functions
Table 107. Three-phase current measurement (CMMXU)
Characteristic Value
Operation accuracy At the frequency f = f
n
±0.5% or ±0.002 × I
n
(at currents in the range of 0.01...4.00 × I
n
)
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 108. Three-phase voltage measurement (phase-to-earth) (VPHMMXU)
Characteristic
Value
Operation accuracy At the frequency f = f
n
±0.5% or ±0.002 × U
n
(at voltages in the range of 0.01...1.15 × U
n
)
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 109. Three-phase voltage measurement (phase-to-phase) (VPPMMXU)
Characteristic
Value
Operation accuracy At the frequency f = f
n
±0.5% or ±0.002 × U
n
(at voltages in the range of 0.01...1.15 × U
n
)
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 110. Residual current measurement (RESCMMXU)
Characteristic
Value
Operation accuracy At the frequency f = f
n
±0.5% or ±0.002 × I
n
(at currents in the range of 0.01...4.00 × I
n
)
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 111. Residual voltage measurement (RESVMMXU)
Characteristic
Value
Operation accuracy At the frequency f = f
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
Generator Protection and Control
1MRS757583 C
REG630
Product version: 1.3
ABB 51