Table of Contents
Advertisement
1MRK 504 165-UEN Rev. K
11.4.13.2
Activating ZCVPSOF externally
1.
Set AutoInitMode to DLD disabled and Mode to Impedance.
2.
Activate the switch onto fault BC input.
During normal operating conditions, the BC input is de-energized.
3.
Apply a three-phase fault condition corresponding to a fault at approximately 45% of the line or
with impedance at 50% of the used zone setting and current greater than 30% of IBase.
The ZACC input is activated.
4.
Check that the TRIP output, external signals and indication are obtained.
11.4.13.3
Initiating ZCVPSOF automatically and setting mode to impedance
1.
Set AutoInitMode to Voltage and Mode to Impedance.
2.
Deactivate the switch onto fault BC input.
3.
Set the current and voltage inputs to lower than IPh< and UPh< for at least one second.
4.
Apply a three-phase fault condition corresponding to a fault at approximately 45% of the line or
with impedance at 50% of the used zone setting and current greater than 30% of IBase. Apply
a two-phase fault condition corresponding to a fault at approximately 45% of the line or with
impedance at 50% of the used zone setting and current greater than 30% of IBase.
The ZACC input is activated.
5.
Check that the correct TRIP output, external signals and indication are obtained.
11.4.13.4
Initiating ZCVPSOF automatically and setting mode to UILevel
1.
Set AutoInitMode to Voltage and Mode to UILevel.
2.
Deactivate the switch onto fault BC input.
3.
Set the current and voltage inputs to lower than IPh< and UPh< for at least one second.
4.
Apply the three-phase currents in such a way that the magnitudes are greater than IPh< and
the three-phase voltages in such a way that the magnitudes and lower than UPh< at least for
the duration of the tDuration setting.
5.
Check that the correct TRIP output, external signals and indication are obtained.
11.4.13.5
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
11.4.14
Phase preference logic PPLPHIZ
Prepare the IED for verification of settings outlined in Section
11.4.14.1
Function revision history
Document
revision
A
B
C
Table continues on next page
Transformer protection RET670
Commissioning manual
Product
History
revision
2.2.1
-
2.2.1
-
2.2.2
-
© 2017 - 2022 Hitachi Energy. All rights reserved
Testing functionality by secondary injection
GUID-E83E1B3D-026C-48DB-BB9B-43C6597DE5DB v5
GUID-BD8EE7A0-710D-49C8-9B56-CB908BAF2C59 v8
"Preparing the IED to verify
GUID-E2FF644E-DD3A-4549-B15A-2395B9709DA6 v2
Section 11
M13850-14 v8
M13850-27 v8
M13850-41 v5
settings".
153
Advertisement
Table of Contents
