11.4.13.1 Activating ZCVPSOF externally
M13850-14 v8
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.
11.4.13.2 Initiating ZCVPSOF automatically and setting mode to impedance
M13850-27 v8
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.
11.4.13.3 Initiating ZCVPSOF automatically and setting mode to UILevel
GUID-E83E1B3D-026C-48DB-BB9B-43C6597DE5DB v5
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.
11.4.13.4 Completing the test
M13850-41 v5
Continue to test another function or end the test by changing the TESTMODE
setting to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
Section 11 1MRK 505 378-UEN A
Testing functionality by secondary injection
168 Line differential protection RED670 2.2 IEC
Commissioning manual