ABB Relion SMU615, Руководство по эксплуатации продукта, Страница: 20 / 32

Table 36. 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 |cos
φ
| >0.5
2) |PF| <0.86 which equals |sin
φ
| >0.5
Table 37. Frequency measurement (FMMXU)
Characteristic Value
Operation accuracy ±5 mHz
(in measurement range 35...75 Hz)
Substation Merging Unit 1MRS758420 B
SMU615
Product version: 1.0
20 ABB