ABB REQ650 1.3 IEC, Commissioning Manual

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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.
7.4.4.2 Completing the test
SEMOD175023-47 v4
Continue to test another function or end the testing by setting the parameter TestMode to Off
under Main menu/Tests/IED test mode/TESTMODE:1. If another function is tested, then set
the parameter
Blocked to No under Main menu/Tests/Function test modes/Voltage/
LOVPTUV(27,U<)/LOVPTUV:1 for the function, or for each individual function in a chain, to be
tested next. Remember to set the parameter
Blocked to Yes, for each individual function that
has been tested.
7.5 Testing frequency protection functions
7.5.1 Underfrequency protection SAPTUF
M16289-2 v7.2.1
Prepare the IED for verification of settings as outlined in section Preparing the IED to verify
settings .
Values of the logical signals for SAPTUF are available on the local HMI under Main menu/
Tests/Function status/Frequency/SAPTUF(81,f<)/SAPTUF:X. The Signal Monitoring in
PCM600 shows the same signals that are available on the local HMI.
7.5.1.1 Verifying the settings
Verification of START value and time delay to operate
M16289-17 v4.1.1
1. Check that the IED settings are appropriate, for example the start 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 20 .
0.02 / 0.04 0.04
r
StartFrequency floor f StartFrequency
 
 
   
IECEQUATION16059 V1 EN-US
(Equation 20)
[1]
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 (
100 ms) 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 (
100 ms).
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 of the time delay plus the minimum
operate time of the function (80 - 90 ms).
Extended testing
M16289-31 v5.1.1
[1] floor[
x] is the largest integer less than or equal to x
Section 7 1MRK 505 293-UEN B
Testing functionality
70 Breaker protection REQ650
Commissioning manual
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