Over/Undervoltage Feature - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
If reverse directional feature is selected or
FromObject , the angle between current and polarizing voltage shall be set equal to rca-dir
+180°.
4. Overall check in principal as above (non-directional overcurrent feature)
5. Reverse the direction of the injection current and check that the protection does not trip.
6. Check with low polarization voltage that the feature becomes non-directional, blocked or
with memory according to the setting.
10.8.1.5

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.
10.8.1.6 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.
10.9 Secondary system supervision
10.9.1 Current circuit supervision CCSSPVC (87)
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
The Current circuit supervision function CCSSPVC (87) 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
Pickup_Block .
10.9.1.1 Verifying the settings
1. Check the input circuits and the trip value of the
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 ·
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 ·
Commissioning manual
CTWYEpoint configuration parameter is set to
in this chapter.
IBase to the reference current input Analogue channel ID current input 5.
IBase .
Testing functionality by secondary injection
TestMode setting to Disabled .
"Requirements"
IMinOp is lower than the setting of
IMinOp current level detector by injecting
Section 10
SEMOD56488-83 v2
SEMOD56488-99 v2
SEMOD53556-1 v1
M12917-25 v7
and
M12917-31 v7
181