Hitachi Relion 670 Series Commissioning Manual page 234

Section 11
Testing functionality by secondary injection
8. Finally check that pickup and trip information is stored in the event memory. Repeat steps 3 – 6 for
phases B and C.
9. Inject symmetrical phase voltages and phase currents in all three phases, equal to SBase (rated
voltage and current).
10. Increase the phase angle between the injected phase voltages and phase current, and note the
operate value φ. The corresponding power factor is equal to
11. Decrease the phase angle and note the reset value.
12. Set the phase angle of the injected current slightly higher than the operate value. Switch on the
current and check the time delay.
13. Check that all trip and pickup contacts operate according to the configuration (signal matrices).
14. Finally check that pickup and trip information is stored in the event memory.
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.
11.11.7.2 Compensated over- and undervoltage protection COUVGAPC (59_27)
Prepare the IED for verification of settings as outlined in section
for test" in this chapter.
1. Set OperationOV to Enabled.
2. Connect the test set for three-phase current injection and three-phase voltage to the appropriate
IED terminals.
3. Inject symmetrical phase voltages equal to the rated voltage.
4. Decrease the injected voltage in phase A and note the operated value (pickup value) of the
function.
5. Increase the voltage slowly and note the reset value.
6. Connect a trip output contact to a timer.
7. Reduce the injected voltage stepwise to 90% of the operate level, and check the time delay.
8. Check that all trip and pickup contacts operate according to the configuration (signal matrices).
9. Finally, check that pickup and trip information is stored in the event menu. Repeat steps 4 – 9 for
phases B and C.
If voltage compensation will be used, do the following steps:
10. Set EnShuntReactor to Enabled and activate input signal SWIPOS.
11. Check that the line impedance (R1 and X1) and reactor impedance (Xc) are set to the correct
values.
12. Inject symmetrical phase voltages equal to the rated voltage.
13. Increase the injected current (same phase angle as the injected voltage) in phase A from zero and
note the operated value (pickup value) of the function. Check that this value is equal to:
=
V
14. Repeat step 13 for phases B and C.
15. Set OperationOV to Enabled.
16. Connect the test set for three-phase current injection and three-phase voltage to the appropriate
IED terminals.
17. Inject symmetrical phase voltages equal to the rated voltage.
18. Increase the injected voltage in phase A and note the operated value (pickup value) of the function.
19. Decrease the voltage slowly and note the reset value.
20. Connect a trip output contact to a timer.
21. Increase stepwise the injected voltage to 110% of the operate level, and check the time delay.
22. Check that all trip and pickup contacts operate according to the configuration (signal matrices).
228
[
V
injected
V - I - j
injected
injected
X
xy
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]
V
· ( )
injected
+ jX
R
+ j
L
L
X
cp
1MRK506371-UUS Rev. M
j
=
pf cos
.
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"Requirements" and section
Line distance protection REL670
Commissioning manual
"Preparing