Monitor the signal ALARM until it appears on the corresponding binary output or on
the local HMI.
5.
Compare the measured temperature with the setting.
6.
Measure the LFPTTR/LCPTTR (26)protection trip time.
Use the TRIP signal from the configured binary output to stop the timer.
7.
Take the TEMP readings.
Compare with the setting of
TripTemp
.
8.
Activate the BLOCK binary input.
The signals ALARM, RI and TRIP should disappear.
9.
Reset the BLOCK binary input.
10. Check the reset limit (TdReset).
Monitor the signal PICKUP until it disappears on the corresponding binary output or
on the local HMI, take the TEMP readings and compare with the setting of
ReclTemp
.
11. Compare the measured trip time with the setting according to the formula.
12. Reset the thermal memory.
13. Continue to test another function or end the test by changing the test mode setting to
Disabled
.
6.3.8.2
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/LFPTTR(26,T>)/LFPTTR:1
,
Main menu/Tests/Function test
modes/Current/LCPTTR(26,T>)/LCPTTR:1
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
Breaker failure protection, phase segregated activation and
output CCRBRF (50BF)
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to verify
Values of the logical signals for CCRBRF (50BF) are available on the local HMI under
Main menu/Tests/Function status/Current/CCRBRF(50BF)/CCRBRF:1
. The
Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
The Breaker failure protection, 3-phase activation and output function CCRBRF (50BF)
should normally be tested in conjunction with some other function that provides an initiate
signal. An external INITIATE signal can also be used.
1MRK 505 293-UUS A
Section 6
Testing functionality
59
Commissioning manual
