Completing The Test; Overfrequency Protection Saptof (81); Verifying The Settings - ABB Relion 650 Series Commissioning Manual

Section 7
Testing functionality
1. Check that the IED settings are appropriate, especially the PICKUP value and the definite
time delay.
2. Supply the IED with three-phase voltages at their rated values.
3. Slowly decrease the frequency of the applied voltage, until the PICKUP signal appears.
4. Note the operate value and compare it with the set value.
5. Increase the frequency until rated operating levels are reached.
6. Check that the PICKUP signal resets.
7. Instantaneously decrease the frequency of the applied voltage to a value about 20% lower
than the operate value.
8. Measure the time delay of the TRIP signal, and compare it with the set value.
Extended testing
1. The test above can be repeated to check the time to reset.
2. The tests above can be repeated to test the frequency dependent inverse time characteristic.
Verification of the low voltage magnitude blocking
1. Check that the IED settings are appropriate, especially the
the
2. Supply the IED with three-phase voltages at rated values.
3. Slowly decrease the magnitude of the applied voltage, until the BLKDMAGN signal appears.
4. Note the voltage magnitude value and compare it with the SMAI set value
5. Slowly decrease the frequency of the applied voltage, to a value below
6. Check that the PICKUP signal does not appear.
7. Wait for a time corresponding to
7.5.1.2

Completing the test

Continue to test another function or end the testing by setting the parameter
Disabled under Main menu/Tests/IED test mode/1:TESTMODE. If another function is tested, then
set the parameter
SAPTUF(81,f<)/X:SAPTUF for the function, or for each individual function in a chain, to be tested
next. Remember to set the parameter
tested.
7.5.2

Overfrequency protection SAPTOF (81)

Prepare the IED for verification of settings as outlined in section
settings".
Values of the logical signals for SAPTOF (81) are available on the local HMI under Main menu/
Tests/Function status/Frequency/SAPTOF(81,f>)/X:SAPTOF. The Signal Monitoring in PCM600
shows the same signals that are available on the local HMI.
7.5.2.1

Verifying the settings

Verification of PICKUP value and time delay to operate
68
MinValFreqMeas in the SMAI preprocessing function.
Blocked to No under Main menu/Tests/Function test modes/Frequency/
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tDelay , and check that the TRIP signal does not appear.
Blocked to Yes , for each individual function that has been
1MRK 505 268-UUS A
PUFrequency and the tDelay and
MinValFreqMeas .
PUFrequency .
TestMode to
"Preparing the IED to verify
Breaker protection REQ650
Commissioning manual
M16289-31 v5
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M16290-2 v6.1.1
M16290-14 v4