Table 59. 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
Table 60. Three-phase power and energy (PEMMXU)
Characteristic
Value
Operation accuracy
At all three currents in range 0.10…1.20 x I
n
At all three voltages in range 0.50…1.15 x U
n
At the frequency f
n
±1 Hz
Active power and energy in range |PF| > 0.71
Reactive power and energy in range |PF| < 0.71
±1.5% for power (S, P and Q)
±0.015 for power factor
±1.5% for energy
Suppression of harmonics
DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
Transformer Protection and Control
1MRS756891 F
RET615
Product version: 4.0
48
ABB
Summary of Contents for RET615
Page 1: ...Relion 615 series Transformer Protection and Control RET615 Product Guide...
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