5.
Activate
BLOCK
binary input, the signals
LVL_ALM
,
LVL_LO
should
disappear.
6.
Reset the
BLOCK
binary input.
7.
Check for reset lock out input
RESET_LO
to reset the
LVL_LO
lock out signal.
8.
Conduct these steps for temperature input as well to detect and reset
TEMP_ALM
and
TEMP_LO
signals.
9.
Continue to test another function or end the test by changing the
TESTMODE
setting to
Off
.
10.9.2.2
Completing the test
Continue to test another function or end the test by changing the
TestMode
setting to
Off
. Restore connections and settings to their original values, if they were changed for
testing purposes.
10.9.3
Breaker monitoring SSCBR
Prepare the IED for verification of settings outlined in section “Testing the IED
operation”.
The Signal Monitoring tool in PCM600 shows the service values that are available on
the Local HMI as well.
Values of the logical signals belong to the breaker monitoring are available on the
local HMI under:
Main menu/Test/Function status/Monitoring/
BreakerMonitoring/SSCBR:x
10.9.3.1
Verifying the settings
1. Connect the test set for the injection of a three-phase current to the appropriate
current terminals of the IED.
2. If current need to be injected for a particular test, it should be done in the phase
selected by the
PhSel
parameter.
3. Follow the sequence for positioning the auxiliary contacts before testing:
POSCLOSE
0
1
0
POSOPEN
0
0
1
4. Test of CB contact travel time
4.1. Test the set timing defined by
OpenTimeCorr
,
CloseTimeCorr
,
tTrOpenAlm
and
tTrCloseAlm
.
4.2. Change the status of the auxiliary contacts such that travel time to open
TTRVOP
and travel time to close
TTRVCL
exceed the respective set values
(
tTrOpenAlm
and
tTrCloseAlm
). The measured travel time for opening and
closing is shown on
TTRVOP
and
TTRVCL
respectively.
4.3. Check that
TRVTOPAL
and
TRVTCLAL
are activated.
5. Test of CB status
Section 10
1MRK 504 160-UEN -
Testing functionality by secondary injection
94
Transformer protection RET650 2.1 IEC
Commissioning manual
Содержание RET650 2.1 IEC
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