ABB RED670 Commissioning Manual page 172

Section 11
Testing functionality by secondary injection
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:
Values of the logical signals belonging to the sensitive directional residual overcurrent and power
protection are available on the local HMI under Main menu /Test /Function status /Current
protection /SensDirResOvCurr(67N,IN>) /SDEPSDE(67N,IN>):x
11.5.6.1 Measuring the trip and time limit for set values
166
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
1MRK 505 378-UUS Rev. J
SEMOD53296-122 v5
SEMOD175060-3 v7
and section "Preparing
SEMOD175060-12 v2
Line differential protection RED670
Commissioning manual