Arcteq Generator Commander, Instruction Manual

Page: 151 / 561

Figure. 5.4.12 - 75. Simplified function block diagram of the U1/U2>/< function.
Measured input
The function block uses analog voltage measurement values and always uses RMS values. A -20 ms
averaged value of the selected magnitude is used for pre-fault data registering.
Table. 5.4.12 - 125. Measurement inputs of the U1/U2>/< function.
Signal Description Time base
U
1
RMS RMS measurement of voltage U
1
/V 5ms
U
2
RMS RMS measurement of voltage U
2
/V
5ms
U
3
RMS RMS measurement of voltage U
3
/V
5ms
In RMS values the pre-fault condition is presented with 20 ms averaged history value from -20 ms of
START or TRIP event.
General settings
The following general settings define the general behavior of the function. These settings are static i.e.
it is not possible to change them by editing the setting group.
Table. 5.4.12 - 126. General settings of the function.
Name Range Default Description
U1/2 >/< LN
mode
1: On
2: Blocked
3: Test
4: Test/Blocked
5: Off
0: On
Set mode of VUB block.
This parameter is visible only when Allow setting of individual LN
mode is enabled in General menu.
Genera Generattor Commander or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001 149