Extended Testing; Completing The Test; Two Step Residual Overvoltage Protection Rov2Ptov; Verifying The Settings - ABB REB670 Commissioning Manual

1MRK 505 372-UEN A
10.5.2.2
10.5.2.3
10.5.3
10.5.3.1
Busbar protection REB670 2.2 IEC
Commissioning manual
Testing functionality by secondary injection
5. Set and apply about 20% higher voltage than the measured operate value for
one phase.
6. Measure the time delay for the TR1 signal and compare it with the set value.
7. Check the inverse time delay by injecting a voltage corresponding to 1.2 ×
U1>.
8. Repeat the test to check the inverse time characteristic at different over-
voltage levels.
9. Repeat the above described steps for Step 2 of the function.

Extended testing

1. The tests above can be repeated for 2 out of 3 and for 3 out of 3 operation
mode.

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.

Two step residual overvoltage protection ROV2PTOV

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

Verifying the settings

1. Apply a single-phase voltage either to a single-phase voltage input or to a
residual voltage input with the start value below the set value U1>.
2. Slowly increase the value until ST1 appears.
3. Note the operate value and compare it with the set value.
4. Decrease the voltage slowly and note the reset value.
5. Set and apply a 20% higher voltage than the measured operate value for one
phase.
6. Measure the time delay for the TR1 signal and compare it with the set value.
7. Check the inverse time delay by injecting a voltage corresponding to 1.2 ×
U1>.
For example, if the inverse time curve A is selected, the trip
signals TR1 and TRIP operate after a time corresponding to
the equation:
Section 10
GUID-BE4B4A36-CCEE-4020-B7DC-6A83A43D11F5 v2
M13806-43 v6
SEMOD54358-3 v7
"Preparing the IED
SEMOD54358-35 v11
115