ABB Relion REC670, Commissioning Manual

Page: 137 / 218

Verification of generator start and stop logic
1. Ensure that the settings in the IED are appropriate to the default settings,
especially the CurrStartLevel , FreqHighLimit , FreqLowLimit , UHighLimit and
ULowLimit .
2. Ensure that the setting CBCheck is enabled.
3. Supply the IED with three-phase currents and voltages at their rated values.
4. Slowly decrease the frequency of the applied voltage until the
START
signal
appears.
5. Activate the
CBOPEN
input signal.
6. Slowly decrease the injected current below the CurrStartLevel value until the
START signal disappears.
7. Compare the current magnitude value to the set value.
Verification of voltage band limit check logic
1. Ensure that the settings in the IED are appropriate to the default settings,
especially the CurrStartLevel , FreqHighLimit , FreqLowLimit , UHighLimit and
ULowLimit settings.
2. Ensure that the EnaVoltCheck is enabled.
3. Supply the IED with three-phase currents and voltages at their rated values.
4. Check that the
VOLTOK
signal appears.
5. Slowly decrease the frequency of the applied voltage until the
START
signal
appears.
6. Slowly decrease the positive-sequence voltage of the injected voltage below the
ULowLimit value until the
START
signal disappears.
7. Check that the
VOLTOK
signal disappears.
8. Compare the reset value to the set voltage low limit value.
9. Readjust the positive-sequence voltage of the applied voltage to a value within
the set voltage band limits.
10. Check that the
START
signal reappears.
11. Slowly increase the positive-sequence voltage of the injected voltage above the
UHighLimit value until the
START
signal disappears.
12. Compare the reset value to the set voltage high limit value.
10.6.4.2 Completing the test
• Continue to test another function or end the test by changing the Test mode setting
to off .
• Restore connections and settings to their original values if they were changed for
testing purposes.
1MRK 511 360-UEN A
Section 10
Testing functionality by secondary injection
Bay control REC670 2.1 IEC 131
Commissioning manual