Completing The Test - ABB RET670 Commissioning Manual

Section 10
Testing functionality by secondary injection
6. Apply the fault and the initiation again. The value of current should be below the set value
Pickup_BlkCont .
7. Arrange disconnection of BC closed signal(s) well before set back-up trip time
a correct CB tripping.
8. Verify that back-up trip is not achieved. Re-trip can appear for example, due to selection "Re-
trip without current check".
9. Disconnect injected AC and BFI_3P input signals.
10.5.9.9

Completing the test

Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
10.5.10 Pole discrepancy protection CCPDSC (52PD)
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
10.5.10.1 Verifying the settings
1. External detection logic, Contact function
(52PD) signal from CB. Activate the EXTPDIND binary input, and measure the operating time
of CCPDSC (52PD).
Use the TRIP signal from the configured binary output to stop the timer.
2. Compare the measured time with the set value
3. Reset the EXTPDIND input.
4. Activate the BLKDBYAR binary input.
This test should be performed together with Autorecloser SMBRREC (79).
5. Activate the EXTPDIND binary input.
No TRIP signal should appear.
6. Reset both BLKDBYAR and EXTPDIND binary inputs.
7. Activate the BLOCK binary input.
8. Activate EXTPDIND binary input.
NO TRIP signal should appear.
9. Reset both BLOCK and EXTPDIND binary inputs.
10. If Internal detection logic Contact function
position from auxiliary contacts. Then set inputs 52b_A...52a_C in a status that activates the
pole discordance logic and repeats step 2 to step 6.
11. Unsymmetrical current detection with CB monitoring: Set measured current in one phase to
110% of current release level. Activate CLOSECMD and measure the operating time of the
CCPDSC (52PD) protection.
Use the TRIP signal from the configured binary output to stop the timer.
12. Deactivate the CLOSECMD: Set measured current in one phase to 90% of Current Release
level. Activate CLOSECMD.
NO TRIP signal should appear.
13. Repeat the previous two steps using OPENCMD instead of CLOSECMD. Asymmetry current
detection with CB monitoring: Set all three currents to 110% of Current Release level. Activate
CLOSECMD.
154
in this chapter.
selection = ContactSel setting equals CCPDSC
selection = ContactSel setting equals Pole
TestMode setting to Disabled .
"Requirements"
tTrip .
1MRK 504 154-UUS B
t2 . It simulates
M12104-72 v5
SEMOD55625-59 v6
and
SEMOD55625-63 v8
Commissioning manual