ABB Relion 670 Series Commissioning Manual page 234

Section 11
Testing functionality by secondary injection
4. Switch the fault current off.
5. Activate the CR binary input.
6. Switch the fault current on (110% of the set operating current) and measure the operating
time of the ECPSCH (85) logic.
Use the TRIP signal from the configured binary output to stop the timer.
7. Compare the measured time with the setting for
8. Activate the BLOCK digital input.
9. Switch the fault current on (110% of the set operating current) and wait for a period longer
than the set value
10. Switch the fault current and the polarizing voltage off.
11. Reset the CR binary input and the BLOCK digital input.
11.11.5.2 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.
11.11.6 Current reversal and weak-end infeed logic for residual
overcurrent protection ECRWPSCH (85)
Prepare the IED for verification of settings as outlined in section
"Preparing for test"
Values of the logical signals for ECRWPSCH are available on the Local HMI under Main menu/
Tests/Function status/Scheme communication/ECRWPSCH(85)/ECRWPSCH:1.
The Signal Monitoring in PCM600 shows service values that are available on the Local HMI as well.
First, test the four step residual overcurrent protection function EF4PTOC (51N/67N) and then the
current reversal and weak-end infeed logic according to the corresponding instructions. Then
continue with the instructions below.
11.11.6.1 Testing the current reversal logic
1. Inject the polarizing voltage 3V0 to 5% of
current to 155°, the current leads the voltage.
2. Inject current (
the four step residual overcurrent protection (
3. Check that the IRVL output is activated in the disturbance recorder after the set time
tPickUpRev .
228
No TRIP signal should appear, and the CS binary output should be activated.
tCoord .
No TRIP signal should appear.
in this chapter.
180° — AngleRCA ) in one phase to about 110% of the set operating current of
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tCoord .
TESTMODE setting to Disabled .
"Requirements"
VBase and the phase angle between voltage and
INDir ).
1MRK 506 371-UUS E
M13926-71 v5
M13936-2 v8
and section
M13936-9 v7
Line distance protection REL670
Commissioning manual