Residual Voltage Measurement (Resvmmxu); Three-Phase Power And Energy Measurement (Pemmxu); Frequency Measurement (Fmmxu); Tap Changer Position Indication (Tposyltc) - ABB REX640 Product Manual

REX640
Product version: 1
Table 209. Residual voltage measurement (RESVMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
Table 210. Sequence voltage measurement (VSMSQI)
Characteristic
Operation accuracy
Suppression of harmonics
Table 211. Three-phase power and energy measurement (PEMMXU)
Characteristic
Operation accuracy
Suppression of harmonics
1) |PF| >0.5 which equals |cosφ| >0.5
2) |PF| <0.86 which equals |sinφ| >0.5
Table 212. Frequency measurement (FMMXU)
Characteristic
Operation accuracy
Table 213. Tap changer position indication (TPOSYLTC)
Descrpition
Response time for binary inputs
ABB
Value
Depending on the frequency of the measured voltage: f/f
±0.5% or ±0.002 × U
n
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
RMS: No suppression
Value
Depending on the frequency of the voltage measured: f
At voltages in range 0.01...1.15 × U
±1.0% or ±0.002 × U
n
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value
At all three currents in range 0.10...1.20 × I
At all three voltages in range 0.50...1.15 × U
At the frequency f ±1 Hz
n
±1.5% for apparent power S
±1.5% for active power P and active energy
±1.5% for reactive power Q and reactive energy
±0.015 for power factor
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value
±5 mHz
(in measurement range 35...75 Hz)
Value
Typical 100 ms
1MRS759144 A
= ±2 Hz
n
±2 Hz
n
n
n
n
1)
2)
95