Overcurrent Feature With Current Restraint; Overcurrent Feature With Voltage Restraint - ABB Relion 670 Series Commissioning Manual

1MRK 511 403-UEN E
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
operates and check against the set operate 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 operate value of low set stage, switch on the current and
check the time delay.
For inverse time curves, check the operate time at a current equal to 110% of the operate
current at
8. Check that TRIP and START contacts operate according to the configuration logic.
9. Release the blocking of the high set stage and check the operate 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 START and TRIP information is stored in the event menu.
11.7.1.2

Overcurrent feature with current restraint

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 operate value is done.
Procedure
1. Operate 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 operate value is done.
11.7.1.3

Overcurrent feature with voltage restraint

Procedure
1. Connect the test set for injection of three-phase currents and three-phase voltages to
the appropriate current and voltage terminals of the IED.
2. Inject current(s) and voltage(s) in a way that relevant measured (according to setting
parameter
test set.
Overall check in principal as above (non-directional overcurrent feature)
3. Operate value measurement
The relevant voltage restraining value (according to setting parameter
also to be injected from the test set and the influence on the operate value has to be
calculated when testing of the operate value is done.
4. Operate time measurement
Definite times may be tested as above (non-directional overcurrent feature). For inverse
time characteristics the START value (to which the overcurrent ratio has to be calculated)
is the actual pickup value as got with actual restraining from the voltage restraining
quantity.
Bay control REC670
Commissioning manual
tMin .
Information on how to use the event menu is found in the operator's
manual.
CurrentInput and VoltageInput ) currents and voltages are created from the
© Copyright 2017 ABB. All rights reserved
Testing functionality by secondary injection
VoltageInput ) has
Section 11
SEMOD56488-35 v3
SEMOD56488-44 v5
133