Completing The Test; Four Step Residual Overcurrent Protection, (Zero Sequence Or Negative Sequence Directionality) Ef4Ptoc; Four Step Directional Earth Fault Protection - ABB Relion 670 Series Commissioning Manual

1MRK 511 409-UEN D
6. Connect a trip output contact to a timer.
7. Set the injected current to 200% of the operate level of the tested stage, switch on the
current and check the time delay.
For inverse time curves, check the operate time at a current equal to 110% of the operate
current for
8. Check that all operate and start contacts operate according to the configuration (signal
matrixes).
9. Reverse the direction of the injected current and check that the protection does not
operate.
2 out of 3 or 3 out of 3 currents are chosen for operation: Check that the function will
10. If
not operate with current in one phase only.
11. Repeat the above described tests for the higher set stages.
12. Check that start and trip information is stored in the event menu .
11.4.1.2

Completing the test

continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
11.4.2 Four step residual overcurrent protection, (Zero sequence or
negative sequence directionality) EF4PTOC
Prepare the IED for verification of settings outlined in Section
settings".
Values of the logical signals for D2PTOC are available on the local HMI under Main menu/
Tests/Function status/Current protection/ResidualOverCurr4Step(51N_67N,4(IN>))/
EF4PTOC(51N_67N;4(IN>)):x, where x = instance number.
The Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
11.4.2.1

Four step directional earth fault protection

1. Connect the test set for single current injection to the appropriate IED terminals.
Connect the injection current to terminals L1 and neutral.
2. Set the injected polarizing voltage slightly larger than the set minimum polarizing voltage
(5% of Ur) and set the injection current to lag the voltage by an angle equal to the set
reference characteristic angle (
If reverse directional function is selected, 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 studied step of the function
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 terminals L2 and L3 with a polarizing voltage connected to
terminals L2, respectively L3.
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 operate level of the tested step, switch on the
current and check the time delay.
For inverse time curves, check the operate time at a current equal to 110% of the operate
current for
Phasor measurement unit RES670
Commissioning manual
txMin .
AngleRCA ), if the forward directional function is selected.
txMin .
Testing functionality by secondary injection
TESTMODE setting to Off .
"Preparing the IED to verify
Section 11
SEMOD56287-118 v4
SEMOD53296-3 v9
SEMOD53296-208 v7
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