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Section 10
Testing functionality by secondary injection
10.6.3.2
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
10.7
Frequency protection
10.7.1
Underfrequency protection SAPTUF
Prepare the IED for verification of settings outlined in Section
10.7.1.1
Verifying the settings
Verification of START value and time delay to operate
1.
Check that the IED settings are appropriate, for example the start value and the time delay.
2.
Supply the IED with two-phase voltages at their rated values and initial frequency.
3.
Slowly decrease the voltage frequency by steps of 40 mHz until the START signal appears;
during each step apply the voltage signal for a time that is either at least 10% longer than
(tDelay+100ms) or a suitable time to monitor the function.
4.
Note the frequency value at which the START signal appears and compare it with the set value
StartFrequency.
5.
Increase the frequency until its rated value is reached.
6.
Check that the START signal resets.
7.
Supply the IED with three-phase voltages at their rated values and frequency 20 mHz over the
set value StartFrequency.
8.
Decrease the frequency with a 40 mHz step, applying it for a time that is at least 10% longer
than (tDelay+100ms).
9.
Measure the time delay of the TRIP signal, and compare it with the set value tDelay. Note that
the measured time consists of the set value for time delay plus minimum operate time of the
start function (80 - 90 ms).
Extended testing
1.
The test above can be repeated to check the time to reset.
10.7.1.2
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
10.8
Secondary system supervision
10.8.1
Current circuit supervision CCSSPVC
Prepare the IED for verification of settings outlined in Section
Values of the logical signals for CCSSPVC are available on the local HMI under Main menu/Tests/
Function status/Secondary system supervision/CurrentCircuitSupervision(87,INd/I) /
CCSSPVC(87;INd/I):x, where x = 1, 2 and 3.
The Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
116
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1MRK 506 377-UEN Rev. L
"Preparing the IED to verify
"Preparing the IED to verify
Railway application RER670
Commissioning manual
SEMOD54358-38 v4
SEMOD53547-1 v1
M16289-2 v7
settings".
M16289-15 v3
M16289-17 v7
M16289-31 v6
M16289-57 v5
SEMOD53556-1 v1
M12917-25 v8
settings".
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