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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
.
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
.
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