ABB RED615 - Sequence Voltage Measurement (VSMSQI); Three-Phase Power and Energy Measurement (PEMMXU)

Table 94. Sequence voltage measurement (VSMSQI)
Characteristic Value
Operation accuracy Depending on the frequency of the voltage measured: f
n
±2 Hz
At voltages in range 0.01…1.15 × U
n
±1.0% or ±0.002 × U
n
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
Table 95. Three-phase power and energy measurement (PEMMXU)
Characteristic Value
Operation accuracy At all three currents in range 0.10…1.20 × I
n
At all three voltages in range 0.50…1.15 × U
n
At the frequency f
n
±1 Hz
±1.5% for apparent power S
±1.5% for active power P and active energy
1)
±1.5% for reactive power Q and reactive energy
2)
±0.015 for power factor
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1) |PF| >0.5 which equals |cosφ| >0.5
2) |PF| <0.86 which equals |sinφ| >0.5
Table 96. Frequency measurement (FMMXU)
Characteristic Value
Operation accuracy ±10 mHz
(in measurement range 35...75 Hz)
Line Differential Protection and Control
1MRS756500 K
RED615
Product version: 5.0 FP1
ABB 55