Hitachi Relion 670 Series Commissioning Manual page 160

Section 11
Testing functionality by secondary injection
If reverse directional function is selected, set the injection current to lag the polarizing voltage by an
angle equal to RCA.
4. Increase the injected current and note the value at which the studied step of the function trip.
5. Decrease the current slowly and note the reset value.
6. Block lower set steps when testing higher set steps according to the instructions that follow.
7. Connect a trip output contact to a timer.
8. Set the injected current to 200% of the trip level of the tested step, switch on the current and check
the time delay.
For inverse time curves, check the trip time at a current equal to 110% of the trip current in order to
test parameter txmin.
9. Check that all trip and pickup contacts trip according to the configuration (signal matrixes)
10. Reverse the direction of the injected current and check that the step does not trip.
11. Check that the protection does not trip when the polarizing voltage is zero.
12. Repeat the above-described tests for the higher set steps.
13. Finally, check that pickup and trip information is stored in the event menu.
11.5.5.2 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.
11.5.6 Sensitive directional residual overcurrent and power protection
SDEPSDE (67N)
Prepare the IED for verification of settings as outlined in section
for test" in this chapter.
IED test set
ANSI09000021 V1 EN-US
Figure 43:
154
NI
V_A
V_B
V_C
V_N
Principle connection of the test set
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"Requirements"
IED
NI
V1
V2
V3
V_N
TRIP
ANSI09000021-1-en.vsd
1MRK506371-UUS Rev. M
SEMOD53296-122 v5
SEMOD175060-3 v7
and section "Preparing
Line distance protection REL670
Commissioning manual