ABB Relion 670 Series Commissioning Manual page 114

Section 10
Testing functionality by secondary injection
8. Activate the BLKU binary input.
9. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
10. Reset the BLKU binary input.
11. Inject the measured voltages at rated values for at least set tRestore time.
12. Activate the BLOCK binary input.
13. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
14. Reset the BLOCK binary input.
10.5.5.2 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.
10.6 Frequency protection
10.6.1 Underfrequency protection SAPTUF (81)
Prepare the IED for verification of settings outlined in Section
10.6.1.1 Verifying the settings
Verification of PICKUP value and time delay to trip
1. Check that the IED settings are appropriate, for example the pickup value and the time delay.
2. Supply the IED with three-phase voltages at their rated values and initial frequency.
The initial frequency is calculated using Equation 22.
StartFrequency
IECEQUATION16059 V1 EN-US
3. Slowly decrease the voltage frequency bysteps of 40 mHz until the TRIP 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. Note the frequency value at which the TRIP signal appears and compare it with the set value
StartFrequency.
6. Increase the frequency until its rated value is reached.
7. Check that the PICKUP signal resets.
8. Supply the IED with three-phase voltages at their rated values and frequency 20 mHz over the set
value StartFrequency.
9. Decrease the frequency with a 40 mHz step, applying it for a time that is at least 10% longer than
(tDelay+100ms).
10. 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 of the time delay plus the minimum trip time of the pickup
start function (80 - 90 ms).
Extended testing
108
   
0.02 floor f StartFrequency

r
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"Preparing the IED to verify
 
/ 0.04 0.04

1MRK 505 372-UUS Rev. K
SEMOD175023-47 v4
SEMOD53547-1 v1
M16289-2 v7
settings".
M16289-15 v3
M16289-17 v7
(Equation 22)
M16289-31 v6
Busbar protection REB670
Commissioning manual