Completing The Test; Directional Underpower Protection Guppdup; Verifying The Settings - ABB REB670 Commissioning Manual

1MRK 505 372-UEN A
10.4.7.8
10.4.8
10.4.8.1
Busbar protection REB670 2.2 IEC
Commissioning manual
Testing functionality by secondary injection
6. Apply the fault and the START again. The value of current should be below
the set value I>BlkCont
7. Arrange disconnection of BC closed signal well before set back-up trip time
t2.Arrange disconnection of BC closed signals well before set back-up trip
time t2. It simulates a correct CB tripping.
8. Verify that back-up trip is not achieved. Re-trip can appear, for example, due
to selection RetripMode = No CBPos Check.
9. Disconnect injected AC and START input signals.

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.

Directional underpower protection GUPPDUP

Prepare the IED for verification of settings outlined in Section
to verify settings".

Verifying the settings

The underpower protection shall be set to values according to the real set values to
be used.
The test is made by means of injection of voltage and current where the amplitude
of both current and voltage and the phase angle between the voltage and current
can be controlled. During the test, the analog outputs of active and reactive power
shall be monitored.
1. Connect the test set for injection of voltage and current corresponding to the
mode to be used in the application. If a three-phase test set is available this
could be used for all the modes. If a single-phase current/voltage test set is
available the test set should be connected to a selected input for one-phase
current and voltage.
Section 10
SEMOD128582-251 v3
SEMOD175027-3 v5
"Preparing the IED
SEMOD175027-7 v7
105