Instruction manual –AQ F210 Feeder Protection IED
75 (292
)
Figure 4.2.3-23 Simplified function block diagram of the NEF function.
4.2.3.1
M
EASURED INPUT VALUES
Function block uses analog current measurement values. Function block always utilizes
peak-to-peak measurement from samples and by user selection the monitored magnitude
can be either fundamental frequency RMS values, True RMS values from the whole
harmonic specter of 32 components or peak to peak values. -20ms averaged value of the
selected magnitude is used for pre-fault data registering.
Table 4.2.3.1-30 Analogic magnitudes used by the NEF function.
Signal
Description
Time base
I01PP
Peak-to-peak measurement of coarse residual current
measurement input I01
5 ms
I01RMS
Fundamental RMS measurement of coarse residual current
measurement input I01
5 ms
I01TRMS
TRMS measurement of coarse residual current
measurement input I01
5 ms
I02PP
Peak-to-peak measurement of sensitive residual current
measurement input I02
5 ms
I02RMS
Fundamental RMS measurement of sensitive residual
current measurement input I02
5 ms
I02TRMS
TRMS measurement of coarse sensitive current
measurement input I02
5 ms
I0Calc
Fundamental RMS value of the calculated zero sequence
current from the three phase currents
5 ms
Selection of the used AI channel is made with a setting parameter. In all possible input
channel variations pre-fault condition is presented with 20 ms averaged history value from
-20 ms of Start or Trip event.
Содержание AQ-F210
Страница 1: ...INSTRUCTION MANUAL AQ F210 Feeder Protection IED ...
Страница 255: ...Instruction manual AQ F210 Feeder Protection IED 255 292 Figure 7 1 Connection of different sensor types ...
Страница 259: ...Instruction manual AQ F210 Feeder Protection IED 259 292 Figure 7 9 13 Panel cut out and spacing of the AQ 2xx IED ...
Страница 291: ...Instruction manual AQ F210 Feeder Protection IED 291 292 ACCESSORIES ...