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 t_CoolingK switch 20 minutes on a voltage
1.15 · Pickup1 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.
13.6.4.2 Completing the test
M6583-85 v4
Continue to test another function or end the test by changing the TESTMODE setting to
Disabled. Restore connections and settings to their original values, if they were
changed for testing purposes.
13.6.5 Voltage differential protection VDCPTOV (60)
SEMOD175258-3 v2
Prepare the IED for verification of settings as outlined in section
"Requirements" and
section "Preparing for test" in this chapter.
13.6.5.1 Check of undervoltage levels
SEMOD175258-71 v2
This test is relevant if the setting BlkDiffAtVLow = Yes.
Check of V1Low
SEMOD175258-75 v3
Procedure
1. Connect voltages to the IED according to valid connection diagram and figure 58.
2. Apply voltage higher than the highest set value of VDTrip, V1Low and V2Low to
the V1 three-phase inputs and to one phase of the V2 inputs according to
figure
58.
The voltage differential PICKUP signal is set.
Section 13 1MRK 502 073-UUS A
Testing functionality by secondary injection
224 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
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