6.6.1.2
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/Secondary system supervision/CCSRDIF(87,INd)/
X:CCSRDIF
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.
6.6.2
Fuse failure supervision SDDRFUF
Prepare the IED for verification of settings as outlined in
Values of the logical signals for SDDRFUF are available on the local HMI under
Main menu/Tests/Function status/Secondary system supervision/SDDRFUF/
1:SDDRFUF
. The Signal Monitoring in PCM600 shows the same signals that are
available on the local HMI.
The verification is divided in two main parts. The first part is common to all fuse
failure supervision options, and checks that binary inputs and outputs operate as
expected according to actual configuration. In the second part the relevant set
operate values are measured.
6.6.2.1
Checking that the binary inputs and outputs operate as expected
1.
Simulate normal operating conditions with the three-phase currents in phase
with their corresponding phase voltages and with all of them equal to their
rated values.
2.
Connect the nominal dc voltage to the DISCPOS binary input.
•
The signal BLKU should appear with almost no time delay.
•
No signals BLKZ and 3PH should appear on the IED.
•
Only the distance protection function can operate.
•
Undervoltage-dependent functions must not operate.
3.
Disconnect the dc voltage from the DISCPOS binary input terminal.
4.
Connect the nominal dc voltage to the MCBOP binary input.
•
The BLKU and BLKZ signals should appear without any time delay.
•
All undervoltage-dependent functions must be blocked.
5.
Disconnect the dc voltage from the MCBOP binary input terminal.
6.
Disconnect one of the phase voltages and observe the logical output signals
on the binary outputs of the IED. BLKU and BLKZ signals should
simultaneously appear.
BLKU and BLKZ signals should simultaneously appear.
7.
After more than 5 seconds disconnect the remaining two-phase voltages and
all three currents.
Section 6
1MRK 511 248-UEN -
Testing functionality
68
Commissioning Manual
