9.
Switch the fault current on.
No TRIP signal should appear.
10. Switch the fault current off.
11. Reset the RELEASE binary input.
12. Switch the fault current on.
No TRIP signal should appear.
13. Switch the fault current off.
6.3.8.2
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/Current/STBPTOC(50STB,I>)/1:STBPTOC
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.
6.3.9
Pole discordance protection CCRPLD
Prepare the IED for verification of settings as outlined in
.
Values of the logical signals for CCRPLD 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.
6.3.9.1
Verifying the settings
1.
When CCRPLD is set for external, set setting
ContSel
to
On
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 function block, and measure the
operating time of CCRPLD.
3.
Compare the measured time with the set value
tTrip
.
4.
Reset the EXTPDIND input.
5.
When CCRPLD is set for unsymmetrical current detection with CB
monitoring, set setting
CurrSel
under
Main menu/Settings/IED Settings/
Current/CCRPLD/1:CCRPLD
to
On
.
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.
1MRK 511 248-UEN -
Section 6
Testing functionality
55
Commissioning Manual
