is initiated by any protection function, either integrated or external. The
functional TRIP output signal must always appear.
6.10.1.2
Circuit breaker lockout
The following tests should be carried out when the built-in lockout function is used in
addition to possible other tests, which depends on the complete configuration of an
IED.
1.
Check that
AutoLock
and
TripLockout
are both set to
Off
.
2.
Initiate a three-phase fault.
The functional output TRIP should be active at each fault. The output
CLLKOUT must not be activated.
3.
Activate the automatic lockout function, set
AutoLock
=
On
and repeat.
Besides the TRIP outputs, CLLKOUT should be set.
4.
Reset the lockout signal by activating the reset lockout (RSTLKOUT) signal.
5.
Activate the TRIP signal lockout function, set
TripLockout
=
On
and repeat.
The output TRIP must be active and stay active after each fault. CLLKOUT must
be activated.
6.
Reset the lockout.
All functional outputs should reset.
7.
Deactivate the TRIP signal lockout function, set
TripLockout
=
Off
and the
automatic lockout function, set
AutoLock
=
Off
if not used.
6.10.1.3
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/TESTMODE:1
. If another function
is tested, then set the parameter
Blocked
to
No
under
Main menu/Tests/Function test
modes/Logic/SMPPTRC(94,1->0)/SMPPTRC:X
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.
6.11
Testing monitoring functions
6.11.1
Event counter CNTGGIO
The event counter function CNTGGIO can be tested by connecting a binary input to
the counter under test and applying pulses to the counter. The speed of pulses must not
exceed 10 per second. Normally the counter will be tested in connection with tests on
the function that the counter is connected to, such as trip logic. When configured, test
it together with the function that operates it. Trig the function and check that the
counter result corresponds with the number of operations.
Section 6
1MRK 502 049-UEN A
Testing functionality
108
Commissioning manual
