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Section 11
Testing functionality by secondary injection
4.
Check the time until the actual temperature TEMP has reached the AlarmTemp level during
injection.
Monitor the signal ALARM until it appears on the corresponding binary output or on the local HMI.
5.
Measure the LFPTTR/LCPTTR (26)protection trip time.
Use the TRIP signal from the configured binary output to stop the timer.
6.
Take the TEMP readings.
Compare with the setting of TripTemp.
7.
Activate the BLOCK binary input.
The signals ALARM, PICKUP and TRIP should disappear.
8.
Reset the BLOCK binary input.
9.
Check the reset limit (TdReset).
Monitor the signal PICKUP until it disappears on the corresponding binary output or on the local
HMI, take the TEMP readings and compare with the setting of ReclTemp.
10.
Compare the measured trip time with the setting according to the formula.
11.
Reset the thermal memory.
12.
Continue to test another function or end the test by changing the test mode setting to Disabled.
11.4.5.2
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.4.6
Directional underpower protection GUPPDUP (37)
Prepare the IED for verification of settings as outlined in section
for test"
in this chapter.
11.4.6.1
Verifying the settings
The underpower protection shall be set to values according to the real set values to be used.
The test is made by means of injection of voltage and current where the amplitude of both current and
voltage and the phase angle between the voltage and current can be controlled. During the test, the
analog outputs of active and reactive power shall be monitored.
1.
Connect the test set for injection of voltage and current corresponding to the mode to be used in
the application. If a three-phase test set is available this could be used for all the modes. If a single-
phase current/voltage test set is available the test set should be connected to a selected input for
one-phase current and voltage.
116
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1MRK 511 409-UUS Rev. K
"Requirements"
and section
Phasor measurement unit RES670
Commissioning manual
M14950-48 v5
SEMOD175027-3 v5
"Preparing
SEMOD175027-7 v7
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