Hitachi Relion 670 Series Commissioning Manual page 151

1MRK506371-UUS Rev. M
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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 IphPickup and UVPickup 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 VILevel
1. Set AutoInitMode to Voltage and Mode to VILevel.
2. Deactivate the switch onto fault BC input.
3. Set the current and voltage inputs to lower than IphPickup and UVPickup for at least one second.
4. Apply the three-phase currents in such a way that the magnitudes are greater than IphPickup and
the three-phase voltages in such a way that the magnitudes and lower than UVPickup 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 Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
Line distance protection REL670
Commissioning manual
Product History
revision
2.2.4 Updated technical data for setting parameters tDuration, tDLD and tOperate.
2.2.5 -
2.2.6 -
2.2.6 -
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Section 11
Testing functionality by secondary injection
GUID-E83E1B3D-026C-48DB-BB9B-43C6597DE5DB v5
M13850-14 v8
M13850-27 v8
M13850-41 v5
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