Completing The Test; Frequency Protection; Underfrequency Protection Saptuf; Verifying The Settings - ABB rec670 Commissioning Manual

Section 10
Testing functionality by secondary injection
10.5.5.2
10.6
10.6.1
10.6.1.1
126
1. Check that the input logical signals BLOCK, CBOPEN and VTSU are logical
zero.
2. Supply a three-phase rated voltage in all three phases and note on the local HMI
that the TRIP logical signal is equal to the logical 0.
3. Switch off the voltage in all three phases.
After set tTrip time a TRIP signal appears on the corresponding binary output or
on the local HMI.
Note that TRIP at this time is a pulse signal, duration should be
according to set tPulse.
4. Inject the measured voltages at rated values for at least set tRestore time.
5. Activate the CBOPEN binary input.
6. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
7. Inject the measured voltages at rated values for at least set tRestore time.
8. Activate the VTSU binary input.
9. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
10. Reset the VTSU binary input.
11. Inject the measured voltages at rated values for at least set tRestore time.
12. Activate the BLOCK binary input.
13. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
14. Reset the BLOCK binary input.

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.

Frequency protection

Underfrequency protection SAPTUF

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

Verifying the settings

Verification of START value and time delay to operate
1MRK 511 360-UEN A
"Preparing the IED to
Bay control REC670 2.1 IEC
Commissioning manual