Hitachi RED670 - Automatic Switch Onto Fault Logic ZCVPSOF; Function Revision History

IEC10000142-1-en.vsd
0
1
2
COMMON TRIP COMMAND (trip)
-1
0
1
TRIPZ1 (tripZone1)
0
1
2
TRIPZ2 (tripZone2)
0
1
2
START (start)
0
1
2
GENMODE (generatorMode)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
-1
0
1
time in seconds
→
MOTMODE (motorMode)
IEC10000142 V1 EN-US
Figure 42: Boolean output signals for the injected current with two components: a 50 Hz
current component and a 49.5 Hz current component
11.4.13 Automatic switch onto fault logic ZCVPSOF
M13850-2 v9
Prepare the IED for verification of settings outlined in Section "Preparing the IED to verify settings".
The automatic switch onto fault logic function ZCVPSOF is checked using secondary injection tests.
ZCVPSOF is activated either by the external input BC or by the internal DLD. FUFSPVC is done with
a pre-fault condition where the phase voltages and currents are at zero. A three-phase fault with zero
impedance and a three-phase fault with an impedance corresponding to the whole line is applied.
This fault shall cause an instantaneous trip and result in a TRIP indication.
11.4.13.1 Function revision history
GUID-A7F84AD6-F164-491B-B25E-D3BB002E1BDA v3
Document
revision
Product
revision
History
A 2.2.1 -
B 2.2.1 -
C 2.2.2 -
D 2.2.3 -
E 2.2.3 -
F 2.2.4 -
G 2.2.4 Updated technical data for setting parameters tDuration, tDLD and tOperate.
H 2.2.5 -
1MRK 505 378-UEN Rev. K Section 11
Testing functionality by secondary injection
Line differential protection RED670 149
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved