6.4.12
Pole discrepancy protection CCRPLD (52PD)
Prepare the IED for verification of settings as outlined in
Values of the logical signals for CCRPLD (52PD) are available on the local HMI
under
Main menu/Tests/Function status/Current/CCRPLD(52PD)/X:CCRPLD
.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
6.4.12.1
Verifying the settings
1.
When CCRPLD (52PD) is set for external, set setting
ContSel
to
Enable
under
Main menu/Settings/IED Settings/Current/CCRPLD/1:CCRPLD
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/1:CCRPLD
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.
6.4.12.2
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/1:TESTMODE
. If another
function is tested, then set the parameter
Blocked
to
No
under
Main menu/Tests/
Function test modes/Current/CCRPLD(52PD)/X:CCRPLD
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.
6.4.13
Broken conductor check BRCPTOC (46)
Prepare the IED for verification of settings as outlined in
Section 6
1MRK 506 331-UUS A
Testing functionality
86
Commissioning Manual
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