ABB Relion 670 series - Accidental Energizing Protection for Synchronous Generator AEGGAPC; Verifying the Settings; Voltage Protection; Two Step Undervoltage Protection UV2 PTUV

15.6.13 Accidental energizing protection for synchronous generator
AEGGAPC
Prepare the IED for verification of settings outlined in section "Overview" and
section
"Preparing for test" in this chapter.
15.6.13.1 Verifying the settings
1. Connect the test set for three-phase current injection and for three phase
voltage injection to the appropriate IED terminals.
2. Inject zero voltage to the IED.
3. Increase the injected symmetric three phase current slowly and note the
operated value (start value) of the studied step of the function.
4. Decrease the current slowly and note the reset value.
5. Connect a trip output contact to a timer.
6. Set the injected current to 200% of the operate level of the tested stage,
switch on the current and check the time delay.
7. Check that all trip and start contacts operate according to the configuration
(signal matrises).
8. Finally check that start and trip information is stored in the event menu.
9. Inject rated symmetric three phase voltage to the IED.
10. Set the injected current to 200% of the operate level of the tested stage,
switch on the current. The function does not start and trip.
11. Inject 95% of the set ArmU< value symmetric three-phase voltage to the IED.
12. Set the injected current to 200% of the operate level of the tested stage,
switch on the current. The function does start and trip.
15.7 Voltage protection
15.7.1 Two step undervoltage protection UV2PTUV
Prepare the IED for verification of settings outlined in section
"Overview" and
section "Preparing for test" in this chapter.
15.7.1.1 Verifying the settings
Verification of START value and time delay to operate for Step1
1. Check that the IED settings are appropriate, especially the START value, the
definite time delay and the 1 out of 3 operation mode.
2. Supply the IED with three-phase voltages at their rated values.
3. Slowly decrease the voltage in one of the phases, until the START signal
appears.
1MRK 502 029-UEN A Section 15
Verifying settings by secondary injection
191
Installation and commissioning manual