ABB RED615 Product Manual page 43

ABB
Line Differential Protection and Control
RED615
Product version: 2.0
Table 51. Residual current measurement (RESCMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 52. Residual voltage measurement (RESVMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Value
Depending on the frequency of the current
measured: f/f = ±2Hz
n
±0.5% or ±0.002 x I
n
at currents in the range of 0.01...4.00 x I
DFT: -50dB at f = n x f
n
...
RMS: No suppression
Value
Depending on the frequency of the current
measured: f/f = ±2Hz
n
±0.5% or ±0.002 x U
n
DFT: -50dB at f = n x f
n
...
RMS: No suppression
1MRS756500 B
Issued: 03.07.2009
n
, where n = 2, 3, 4, 5,
, where n = 2, 3, 4, 5,
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