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.
Change the voltages and currents in all three phases simultaneously.
The voltage change must be greater than the set value for
DU>
and the current
change must be less than the set value for
DI<
.
•
The BLKU and BLKZ signals appear without any time delay. The BLKZ
signal will be activated only if the internal deadline detection is not
activated at the same time.
•
3PH should appear after 5 seconds, if the remaining voltage levels are
lower than the set
UDLD<
of the DLD function.
3.
Apply normal conditions as in step
.
The BLKU, BLKZ and 3PH signals should reset, if activated, see step
and
.
4.
Change the voltages and currents in all three phases simultaneously.
The voltage change must be greater than the set value for
DU>
and the current
change must be more than the set value for
DI<
.
The BLKU, BLKZ and 3PH signals should not appear.
5.
.
6.
Connect the nominal voltages in all three phases and feed a current below the
operate level in all three phases.
7.
Keep the current constant. Disconnect the voltage in all three phases
simultaneously.
The BLKU, BLKZ and 3PH signals should not appear.
8.
Change the magnitude of the voltage and current for phase 1 to a value greater
than the set value for
DU>
and
DI<
.
9.
Check that the start output signals STDUL1 and STDIL1 and the general start
signals STDU or STDI are activated.
10. Check that the start output signals for the current and voltage phases 2 and 3 are
activated by changing the magnitude of the voltage and current for phases 2 and
3.
6.8.1.5
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/Secondary system supervision/SDDRFUF/SDDRFUF: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.
1MRK 502 049-UEN A
Section 6
Testing functionality
97
Commissioning manual
Содержание REG650 ANSI
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