Completing The Test; Voltage Differential Protection Vdcptov; Check Of Undervoltage Levels - ABB REG670 Commissioning Manual

Section 13
Testing functionality by secondary injection
13.6.4.2
13.6.5
13.6.5.1
208
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 Tcooling switch 20 minutes on a voltage
1.15 · V/Hz> 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 · V/Hz>.
14. Finally check that START and TRIP information is stored in the event menu.

Completing the test

Continue to test another function or end the test by changing the TESTMODE
setting to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.

Voltage differential protection VDCPTOV

Prepare the IED for verification of settings as outlined in section
and section "Preparing for test"

Check of undervoltage levels

This test is relevant if the setting BlkDiffAtULow = Yes.
Check of U1Low
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 UDTrip, U1Low and
U2Low to the U1 three-phase inputs and to one phase of the U2 inputs
according to figure 58.
The voltage differential START signal is set.
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
in this chapter.
1MRK 502 073-UEN A
M6583-85 v4
SEMOD175258-3 v2
"Requirements"
SEMOD175258-71 v2
SEMOD175258-75 v3
Commissioning manual