ABB RELION 615 Series Product Manual page 44

Motor Protection and Control
REM615
Product version: 5.0 FP1
Measurement functions
Table 69. Three-phase current measurement (CMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 70. Sequence current measurement (CSMSQI)
Characteristic
Operation accuracy
Suppression of harmonics
Table 71. Residual current measurement (RESCMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 72. Three-phase voltage measurement (VMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 73. Residual voltage measurement (RESVMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
44
Value
Depending on the frequency of the measured current: f
±0.5% or ±0.002 × I
n
(at currents in the range of 0.01...4.00 × I
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
RMS: No suppression
Value
Depending on the frequency of the measured current: f/f
±1.0% or ±0.002 × I
n
at currents in the range of 0.01...4.00 × I
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value
Depending on the frequency of the current measured: f/f
±0.5% or ±0.002 × I
n
at currents in the range of 0.01...4.00 × I
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
RMS: No suppression
Value
Depending on the frequency of the voltage measured: f
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
Value
Depending on the frequency of the measured voltage: f/f
±0.5% or ±0.002 × U
n
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
RMS: No suppression
1MRS756890 N
±2 Hz
n
)
n
= ±2 Hz
n
n
= ±2 Hz
n
n
±2 Hz
n
n
= ±2 Hz
n
ABB