ABB Relion REM615 Product Manual page 48

Motor Protection and Control
REM615
Product version: 3.0
Measurement functions
Table 60. Three-phase current measurement (CMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 61. Residual current measurement (RESCMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 62. Three-phase voltage measurement (VMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
48
Value
Depending on the frequency of the current
measured: f ±2 Hz
n
±0.5% or ±0.002 x I
n
(at currents in the range of 0.01...4.00 x I
DFT: -50 dB at f = n x f
n
...
RMS: No suppression
Value
Depending on the frequency of the current
measured: f/f = ±2 Hz
n
±0.5% or ±0.002 x I
n
at currents in the range of 0.01...4.00 x I
DFT: -50 dB at f = n x f
n
...
RMS: No suppression
Value
Depending on the frequency of the voltage
measured: f ±2 Hz
n
At voltages in range 0.01...1.15 x U
±0.5% or ±0.002 x U
n
DFT: -50 dB at f = n x f
n
...
RMS: No suppression
1MRS756890 D
Issued: 2010-06-29
)
n
, where n = 2, 3, 4, 5,
n
, where n = 2, 3, 4, 5,
n
, where n = 2, 3, 4, 5,
ABB