ABB RED670 Commissioning Manual page 143

1MRK 505 378-UUS Rev. J
1. Set the operation of all normal distance protection zones to Enabled.
2. Simulate a fault without fault resistance in the middle of distance protection zone 1.
Make sure that the trip appears within the operate time for the distance protection zone 1 and no
BLKZMOR output signal appears.
3. Switch off the fault and prepare a new fault without fault resistance within the normal distance
protection zone 2 operate area, but outside the zone 1 operate area.
4. Switch on the fault and move it into the zone 1 operate area with a time delay longer than the time
set on the tDZ timer and faster than the time set on timer tZL.
5. Observe the trip time, which must be equal to the trip time of zone 1, after the measured
impedance enters its operate area.
No delayed operation of zone 1 must be observed.
6. Configure the PUPSD functional input to connect to the PICKUP functional output and repeat the
previous fault.
Fast trip, caused by the operation of zone 1 must appear with a time delay, which is equal to the set
time delay on the timer tZL plus zone 1 normal otrip time. Also, observe the BLKZMOR functional
output signal, which must appear for a short time.
7. Be sure to establish the original configuration of the IED and the original settings of all setting
parameters.
11.4.10.5 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.
11.4.11 Pole slip protection PSPPPAM (78)
Prepare the IED for verification of settings as outlined in section
for test" in this chapter.
11.4.11.1 Verifying the settings
It is assumed that setting of the pole slip protection function PSPPPAM (78) is done according to
impedances as seen in figure
The test is done by means of injection of three-phase current and three-phase voltage from a modern
test device. This test device shall be able to give voltage and current with the possibility to change
voltage and current amplitude and the angle between the injected voltage and current. The parameter
setting shall be according to the real application chosen values.
Procedure
1. Feed the IED with current and voltage corresponding to a normal operation point
Injected voltage V equal to base voltage (VBase) and the injected current I equal to half the base
current (IBase). The angle between the voltage and current shall be 0°.
2. With maintained amplitude of the injected voltage the current amplitude and angle is changed to a
value ZC/2.
This is done with a speed so that the final impedance is reached after 1 second. As the injected
voltage is higher than 0.92 VBase no PICKUP signal should be activated.
3. With reduced amplitude of the injected voltage to 0.8 VBase the current amplitude and angle is
changed to a value ZC/2.
This is done with a speed so that the final impedance is reached after 1 second. As the injected
voltage is lower than 0.92 VBase the PICKUP signal should be activated.
Line differential protection RED670
Commissioning manual
39 and figure 40.
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Testing functionality by secondary injection
"Requirements" and section
Section 11
M14946-70 v2
SEMOD175096-3 v2
"Preparing
SEMOD175096-7 v3
137