ABB Relion 670 series - Built-In Overcurrent Feature (Non-Directional); Overcurrent Feature with Current Restraint; Overcurrent Feature with Voltage Restraint

Due to the versatile possibilities of CVGAPC itself, but also the possibilities of logic combinations in the
application configuration of outputs from more than one CVGAPC function block, it is hardly possible to
define a fully covering general commissioning test.
11.9.2.1 Built-in overcurrent feature (non-directional)
SEMOD56488-9 v5
Procedure
1. Go to Main menu /Test /Function test modes /Multipurpose protection /
GeneralCurrentVoltage(GAPC) /CVGAPC:x and make sure that CVGAPC to be tested is
unblocked and other functions that might disturb the evaluation of the test are blocked.
2. Connect the test set for injection of three-phase currents to the appropriate current terminals of the
IED.
3. Inject current(s) in a way that relevant measured current (according to setting parameter
CurrentInput) is created from the test set. Increase the current(s) until the low set stage trips and
check against the set trip value.
4. Decrease the current slowly and check the reset value.
5. Block high set stage if the injection current will activate the high set stage when testing the low set
stage according to below.
6. Connect a TRIP output contact to the timer.
7. Set the current to 200% of the trip value of low set stage, switch on the current and check the time
delay.
For inverse time curves, check the trip time at a current equal to 110% of the trip current at
t_MinTripDelay.
8. Check that TRIP and PICKUP contacts trip according to the configuration logic.
9. Release the blocking of the high set stage and check the trip and reset value and the time delay for
the high set stage in the same way as for the low set stage.
10. Finally check that PICKUP and TRIP information is stored in the event menu.
Information on how to use the event menu is found in the operator's manual.
11.9.2.2 Overcurrent feature with current restraint
SEMOD56488-35 v3
The current restraining value has also to be measured or calculated and the influence on the operation
has to be calculated when the testing of the trip value is done.
Procedure
1. Trip value measurement
The current restraining value has also to be measured or calculated and the influence on the
operation has to be calculated when the testing of the trip value is done.
11.9.2.3 Overcurrent feature with voltage restraint
SEMOD56488-44 v5
Procedure
Section 11 1MRK 504 165-UUS Rev. J
Testing functionality by secondary injection
232 Transformer protection RET670
Commissioning manual
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