Completing The Test - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
7. Connect a trip output contact to the timer and temporarily set the time delay
to 0.5s.
8. Increase the voltage and note the
9. Reduce the voltage slowly and note the reset value.
10. Set the time delay to the correct value according to the setting plan and check the time delay
t_MinTripDelay , injecting a voltage corresponding to 1.2 · Pickup2 .
11. Check that trip and alarm contacts operate according to the configuration logic.
12. Set the cooling time constant temporarily to min value (1min.) to quickly lower the thermal
content.
13. Wait for a period equal to 6 times
and check the inverse operate time.
Wait until the thermal memory is emptied, set the cooling time constant according to the
setting plan and check another point on the inverse time curve injecting a voltage 1.3 ·
Pickup1 .
14. Finally check that PICKUP and TRIP information is stored in the event menu.
10.6.4.2

Completing the test

Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
10.6.5 Voltage differential protection VDCPTOV (60)
Prepare the IED for verification of settings as outlined in section
"Preparing for test"
10.6.5.1 Check of undervoltage levels
This test is relevant if the setting
Check of V1Low
Procedure
1. Connect voltages to the IED according to valid connection diagram and figure 39.
2. Apply voltage higher than the highest set value of
phase inputs and to one phase of the V2 inputs according to figure 39.
The voltage differential PICKUP signal is set.
Commissioning manual
Pickup2 operate value
t_CoolingK switch 20 minutes on a voltage 1.15 · Pickup1
in this chapter.
BlkDiffAtVLow = Yes .
Testing functionality by secondary injection
TestMode setting to Disabled .
"Requirements"
VDTrip , V1Low and V2Low to the V1 three-
Section 10
t_MinTripDelay
M6583-85 v4
SEMOD175258-3 v2
and section
SEMOD175258-71 v2
SEMOD175258-75 v3
171