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

1MRK 502 073-UUS A
13.7.4.2
13.8
13.8.1
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
5. Slowly decrease the frequency of the applied voltage until the BFI_3P signal
appears.
6. Slowly decrease the positive-sequence voltage of the injected voltage below the
VLowLimit value until the BFI_3P 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 BFI_3P signal reappears.
11. Slowly increase the positive-sequence voltage of the injected voltage above the
VUHighLimit value until the BFI_3P 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 Disabled.
• 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
Testing functionality by secondary injection
in this chapter.
Section 13
GUID-83C3F041-9553-4804-9A39-B3E46A5C9AE6 v2
SEMOD53552-1 v1
SEMOD56488-3 v3
"Requirements" and
237