Completing The Test; Multipurpose Protection; General Current And Voltage Protection Cvgapc - ABB REG670 2.0 IEC Commissioning Manual

1MRK502053-UEN B
12.7.4.2
12.8
12.8.1
Generator protection REG670 2.0 IEC
Commissioning manual
Testing functionality by secondary injection
6. Slowly decrease the positive-sequence voltage of the injected voltage below the
ULowLimit value until the START signal disappears.
7. Check that the VOLTOK signal disappears.
8. Compare the reset value to the set voltage low limit value.
9. Readjust the positive-sequence voltage of the applied voltage to a value within
the set voltage band limits.
10. Check that the START signal reappears.
11. Slowly increase the positive-sequence voltage of the injected voltage above the
UHighLimit value until the START signal disappears.
12. Compare the reset value to the set voltage high limit value.

Completing the test

• Continue to test another function or end the test by changing the Test mode setting
to off.
• Restore connections and settings to their original values if they were changed for
testing purposes.

Multipurpose protection

General current and voltage protection CVGAPC

Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
One of the new facilities within the general current and voltage protection function
CVGAPC is that the value, which is processed and used for evaluation in the function,
can be chosen in many different ways by the setting parameters CurrentInput and
VoltageInput.
These setting parameters decide what kind of preprocessing the connected three-
phase CT and VT inputs shall be subjected to. That is, for example, single-phase
quantities, phase-to-phase quantities, positive sequence quantities, negative sequence
quantities, maximum quantity from the three-phase group, minimum quantity from
the three-phase group, difference between maximum and minimum quantities
(unbalance) can be derived and then used in the function.
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.
in this chapter.
Section 12
"Requirements" and
193