ABB RED615 ANSI, Руководство по эксплуатации продукта

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Measurement functions
Table 60. Three-phase current measurement (CMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f
n
±2 Hz
±0.5% or ±0.002 x I
n
(at currents in the range of 0.01...4.00 x I
n
)
Suppression of harmonics DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 61. Current sequence components (CSMSQI)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f/f
n
= ±2 Hz
±1.0% or ±0.002 x I
n
at currents in the range of 0.01...4.00 x I
n
Suppression of harmonics DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
Table 62. Residual current measurement (RESCMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f/f
n
= ±2 Hz
±0.5% or ±0.002 x I
n
at currents in the range of 0.01...4.00 x I
n
Suppression of harmonics DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 63. Residual voltage measurement (RESVMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f/f
n
= ±2 Hz
±0.5% or ±0.002 x U
n
Suppression of harmonics DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Line Differential Protection and Control 1MRS756500 F
RED615
Product version: 4.0
ABB 49