ABB REG670 2.0 IEC, Commissioning Manual

Page: 202 / 268

12.8.1.5 Over/Undervoltage feature
Procedure
1. Connect the test set for injection three-phase voltages to the appropriate voltage
terminals of the IED.
2. Inject voltage(s) in a way that relevant measured (according to setting parameter
VoltageInput ) voltages are created from the test set.
3. Overall check in principal as above (non-directional overcurrent feature) and
correspondingly for the undervoltage feature.
12.8.1.6 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.
12.9 Secondary system supervision
12.9.1 Current circuit supervision CCSSPVC
Prepare the IED for verification of settings outlined in section "Requirements" and
section "Preparing for test" in this chapter.
The Current circuit supervision function CCSSPVC is conveniently tested with the
same three-phase test set as used when testing the measuring functions in the IED.
The condition for this procedure is that the setting of IMinOp is lower than the setting
of Ip>Block .
12.9.1.1 Verifying the settings
1. Check the input circuits and the operate value of the IMinOp current level
detector by injecting current, one phase at a time.
2. Check the phase current blocking function for all three phases by injecting
current, one phase at a time. The output signals shall reset with a delay of 1
second when the current exceeds 1.5 ·
IBase .
3. Inject a current 0.1 · IBase to the reference current input I5.
4. Increase slowly the current in one of the phases current input and check that
FAIL output is obtained when the current is about 0.9 ·
IBase .
Section 12
1MRK502053-UEN B
Testing functionality by secondary injection
196 Generator protection REG670 2.0 IEC
Commissioning manual