6.3.12 Pole discrepancy protection CCRPLD (52PD)
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to verify
settings".
Values of the logical signals for CCRPLD (52PD) are available on the local HMI under
Main menu/Tests/Function status/Current/CCRPLD(52PD)/CCRPLD:X. The
Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
6.3.12.1 Verifying the settings
1. When CCRPLD (52PD) is set for external, set setting ContSel to Enable under Main
menu/Settings/IED Settings/Current/CCRPLD/CCRPLD:1 to activate the logic
that detects pole discordance when external pole discordance signaling is used (input
EXTPDIND) in the application configuration.
2. Activate the input EXTPDIND on CCRPLD (52PD) function block, and measure
the operating time of CCRPLD (52PD).
3. Compare the measured time with the set value tTrip.
4. Reset the EXTPDIND input.
5. When CCRPLD (52PD) is set for unsymmetrical current detection with CB
monitoring, set setting CurrSel under Main menu/Settings/IED Settings/Current/
CCRPLD/CCRPLD:1 to Enable.
Use the TRIP signal from the configured binary output to stop the timer.
6. Repeat point 4 and 5 using OPENCMD instead of CLOSECMD. Set all three
currents to 110% of CurrRelLevel. Activate CLOSECMD.
NO TRIP signal should appear due to symmetrical condition.
6.3.12.2 Completing the test
Continue to test another function or end the testing by setting the parameter TestMode to
Disabled under Main menu/Tests/IED test mode/TESTMODE:1. If another function is
tested, then set the parameter Blocked to No under Main menu/Tests/Function test
modes/Current/CCRPLD(52PD)/CCRPLD:X 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.
6.3.13 Broken conductor check BRCPTOC (46)
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to verify
settings".
Section 6 1MRK 505 293-UUS A
Testing functionality
70
Commissioning manual
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