ABB RED615 Product Manual page 49

ABB
Line Differential Protection and Control
RED615
Product version: 4.0
Measurement functions
Table 60. Three-phase current measurement (CMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 61. Current sequence components (CSMSQI)
Characteristic
Operation accuracy
Suppression of harmonics
Table 62. Residual current measurement (RESCMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 63. Residual voltage measurement (RESVMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Value
Depending on the frequency of the current measured: f
±2 Hz
±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 , where n = 2, 3, 4, 5,...
n
RMS: No suppression
Value
Depending on the frequency of the current measured: f/f
= ±2 Hz
±1.0% 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 , where n = 2, 3, 4, 5,...
n
Value
Depending on the frequency of the current measured: f/f
= ±2 Hz
±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 , where n = 2, 3, 4, 5,...
n
RMS: No suppression
Value
Depending on the frequency of the current measured: f/f
= ±2 Hz
±0.5% or ±0.002 x U
n
DFT: -50 dB at f = n x f , where n = 2, 3, 4, 5,...
n
RMS: No suppression
1MRS756500 F
n
)
n
n
n
n
n
n
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