Verifying The Settings; Completing The Test - ABB RER670 Commissioning Manual

Section 10
Testing functionality by secondary injection
10.5.2.1
10.5.2.2
106

Verifying the settings

The verification of the non-directional phase overcurrent function is
done as instructed below, but without applying any polarizing
voltage.
1. Connect the test set for current injection to the appropriate IED phases.
If there is any configuration logic that is used to enable or block any of the
two available overcurrent steps, make sure that the step under test is enabled.
2. Connect the test set for the appropriate two-phase voltage injection to the IED
phases L1 and L2. The protection shall be fed with a symmetrical two-phase
voltage.
3. Block step two when testing step 1. To test step 1, follow the procedure
described below:
3.1. Set the injected polarizing voltage larger than the set minimum
polarizing voltage (default is 3.0% of UBase) and set the injection
current to lag the appropriate voltage by an angle of about 45° if
forward directional function is selected.
If reverse directional function is selected, set the injection current to lag
the polarizing voltage by an angle equal to 225° (equal to 45° + 180°).
Monitor on the HMI service values for measured current, voltage and
phase angle between the voltage and current in order to verify that
D2PTOC function do measure the quantities as expected.
3.2. Increase the injected current, note the operate value of the tested step of
the function and compare it to the set value.
3.3. Decrease the current slowly, note the reset value and compare it to the
reset ratio 95%.
4. 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 txMin.
5. Check that all operate and start contacts operate according to the
configuration (signal matrixes).
6. Reverse the direction of the injected current and check that the protection
does not operate.
7. Repeat the above described tests for the second step.
8. Check that start and trip information is stored in the event menu and in the
built-in disturbance recorder.

Completing the test

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.
1MRK 506 377-UEN C
SEMOD56287-72 v10
SEMOD56287-118 v4
Railway application RER670 2.2 IEC
Commissioning manual