ABB REC650 - Breaker Failure Protection CCRBRF; Completing the Test; Thermal Overload Protection, One Time Constant LPTTR

6.3.5.2 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/SDEPSDE(67N,IN<->)/1:SDEPSDE 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.
6.3.6 Thermal overload protection, one time constant LPTTR
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to
verify settings".
Values of the logical signals for LPTTR are available on the local HMI under
Main menu/Tests/Function status/Current/LPTTR(26,T>)/1:LPTTR. The
Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
Check that the input logical signal BLOCK is logical zero and that on the local
HMI, the logical signal TRIP, START and ALARM are equal to logical zero.
6.3.6.1 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/LPTTR(26,T>)/1:LPTTR 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.
6.3.7 Breaker failure protection CCRBRF
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to
verify settings".
Values of the logical signals for CCRBRF are available on the local HMI under
Main menu/Tests/Function status/Current/CCRBRF(50BF)/1:CCRBRF. The
Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
The Breaker failure protection function CCRBRF should normally be tested in
conjunction with some other function that provides a start signal. An external
START signal can also be used.
To verify the settings in the most common back-up trip mode 1 out of 3, it is
sufficient to test phase-to-earth faults.
1MRK 511 248-UEN - Section 6
Testing functionality
49
Commissioning Manual