voltage by an angle equal to the set reference characteristic angle
(AngleRCA), for the forward direction.
For reverse direction, set the injection current to lag the polarizing voltage by
an angle equal to RCA+ 180°.
3. Increase the injected current and note the value at which the directional stage
operates.
4. Decrease the current slowly and note the reset value.
5. If the test has been performed by injection of current in phase L1, repeat the
test, injecting current into terminal L2 with a polarizing voltage connected to
terminal L2.
6. Set the injected current to 200% of the operate level, switch on the current
and check the time delay.
7. Check that all trip and start contacts operate according to the configuration
(signal matrixes)
8. Reverse the direction of the injected current and check that the stage operates
accordingly.
9. Check that the protection does not operate when the polarizing voltage is
zero.
10. Finally, check that start and trip information is stored in the event menu.
10.5.4.2 Two step non-directional earth fault protection
GUID-0651EAE0-3AA7-4023-A4F6-C89E0C835E10 v2
1. Do as described in
Directional Stage, but without applying any polarizing
voltage.
10.5.4.3 Completing the test
SEMOD53296-122 v4
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.
10.5.5 Sensitive directional residual overcurrent and power
protection SDEPSDE
SEMOD175060-3 v7
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
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
10.5.5.1 Measuring the operate and time limit for set values
SEMOD175060-12 v2
Section 10 1MRK 506 377-UEN C
Testing functionality by secondary injection
108 Railway application RER670 2.2 IEC
Commissioning manual
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