11.5.11.3 Completing the test
M14922-50 v4
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.5.12 Pole discrepancy protection CCPDSC (52PD)
SEMOD55625-59 v6
Prepare the IED for verification of settings as outlined in section
"Requirements" and section "Preparing
for test" in this chapter.
11.5.12.1 Verifying the settings
SEMOD55625-63 v8
1. External detection logic, Contact function selection = ContactSel setting equals CCPDSC (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 tTrip.
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 selection = ContactSel setting equals Pole 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.
NO TRIP signal should appear due to symmetrical condition.
14. Deactivate the CLOSECMD. Decrease one current with 120% of the current unsymmetrical level
compared to the other two phases. 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.
15. Deactivate the CLOSECMD. Decrease one current with 80% of the current unsymmetrical level
compared to the other two phases. Activate CLOSECMD.
NO TRIP signal should appear.
Section 11 1MRK 504 165-UUS Rev. J
Testing functionality by secondary injection
188 Transformer protection RET670
Commissioning manual
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