Automatic Switch Onto Fault Logic Zcvpsof; Function Revision History - Hitachi RED670 Commissioning Manual

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IEC10000142 V1 EN-US
Figure 42:
11.4.13

Automatic switch onto fault logic ZCVPSOF

Prepare the IED for verification of settings outlined in Section
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

Document
revision
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Line differential protection RED670
Commissioning manual
COMMON TRIP COMMAND (trip)
TRIPZ1 (tripZone1)
TRIPZ2 (tripZone2)
GENMODE (generatorMode)
MOTMODE (motorMode)
0.5 1 1.5 2
time in seconds
Boolean output signals for the injected current with two components: a 50 Hz
current component and a 49.5 Hz current component
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 Updated technical data for setting parameters tDuration, tDLD and tOperate.
2.2.5 -
© 2017 - 2022 Hitachi Energy. All rights reserved
START (start)
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"Preparing the IED to verify
Testing functionality by secondary injection
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IEC10000142-1-en.vsd
settings".
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