Completing The Test; Testing Frequency Protection Functions; Under Frequency Protection Saptuf; Verifying The Settings - ABB Relion 650 Series Commissioning Manual

Section 5
Testing functionality
5.4.4.2
5.5
5.5.1
5.5.1.1
62
No TRIP signal should appear.
10. Reset the VTSU binary input.
11. Inject the measured voltages to their rated values for at least set tRestore time.
12. Activate the BLOCK binary input.
13. Simultaneously disconnect all the three phase voltages from the terminal.
No TRIP signal should appear.
14. Reset the BLOCK binary input.
15. Continue to test another function or complete the test by setting the test mode
to Off.

Completing the test

Continue to test another function or end the testing by setting the parameter
TestMode to Off under Main menu/Tests/IED test mode/1:TESTMODE. If
another function is tested, then set the parameter Blocked to No, under Main menu/
Tests/Function test modes/<Function group>/<Function>/<1:Function> for the
function, or for each individual function in a chain, to be tested next. Remember to
set the parameter Blocked to Yes, for each individual function that has been tested.

Testing frequency protection functions

Under frequency protection SAPTUF

Prepare the IED for verification of settings as outlined in
verify settings".
Values of the logical signals are available on the local HMI under: Main menu/
Tests/Function status/<Function group>/<Function>/<1:Function>. The Signal
monitoring tool in PCM600 shows the same signals that are available on the LHMI.

Verifying the settings

Verification of START-value and time delay to operate
Procedure:
1. Check that the IED settings are appropriate, especially the START value and
the definite time delay.
2. Supply the IED with three-phase voltages at their rated values.
3. Slowly decrease the frequency of the applied voltage, until the START signal
appears.
4. Note the operate value and compare it with the set value.
5. Increase the frequency until rated operating levels are reached.
6. Check that the START signal resets.
7. Instantaneously decrease the frequency of the applied voltage to a value about
20% lower than the operate value.
8. Measure the time delay of the TRIP signal, and compare it with the set value.
1MRK 511 209-UEN -
4.1 "Preparing the IED to
REC650
Commissioning Manual