0.02 /0.04 0.04
r
StartFrequency floor f StartFrequency
IECEQUATION16059 V1 EN-US (Equation 106)
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
M16289-31 v6
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
M16289-39 v7
1. Check that the IED settings are appropriate, for example the PUFrequency, VMin,
and the tDelay.
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 set value VMin.
5. Slowly decrease the frequency of the applied voltage, to a value below
PUFrequency.
6. Check that the PICKUP signal does not appear.
7. Wait for a time corresponding to tDelay, make sure that the TRIP signal does not
appear.
Section 13 1MRK 502 073-UUS A
Testing functionality by secondary injection
232 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
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