ABB Relion 670 Series Technical Reference Manual page 574

Section 10
Multipurpose protection
568
Table 297: Current selection for CVGAPC function
Set value for the
parameter
CurrentInput
1 PhaseA
2 PhaseB
3 PhaseC
4 PosSeq
5 NegSeq
6 3ZeroSeq
7 MaxPh
8 MinPh
9 UnbalancePh
10 PhaseA-PhaseB
11 PhaseB-PhaseC
12 PhaseC-PhaseA
13 MaxPh-Ph
14 MinPh-Ph
15 UnbalancePh-Ph
The user can select to measure one of the voltage quantities shown in table 298:
Comment
CVGAPC function will measure the phase A current phasor
CVGAPC function will measure the phase B current phasor
CVGAPC function will measure the phase C current phasor
CVGAPC function will measure internally calculated positive sequence
current phasor
CVGAPC function will measure internally calculated negative sequence
current phasor
CVGAPC function will measure internally calculated zero sequence current
phasor multiplied by factor 3
CVGAPC function will measure current phasor of the phase with maximum
magnitude
CVGAPC function will measure current phasor of the phase with minimum
magnitude
CVGAPC function will measure magnitude of unbalance current, which is
internally calculated as the algebraic magnitude difference between the
current phasor of the phase with maximum magnitude and current phasor
of the phase with minimum magnitude. Phase angle will be set to 0° all the
time
CVGAPC function will measure the current phasor internally calculated as
the vector difference between the phase A current phasor and phase B
current phasor (I -I )
A B
CVGAPC function will measure the current phasor internally calculated as
the vector difference between the phase B current phasor and phase C
current phasor (I -I )
B C
CVGAPC function will measure the current phasor internally calculated as
the vector difference between the phase C current phasor and phase L1
current phasor ( I -I )
C A
CVGAPC function will measure ph-ph current phasor with the maximum
magnitude
CVGAPC function will measure ph-ph current phasor with the minimum
magnitude
CVGAPC function will measure magnitude of unbalance current, which is
internally calculated as the algebraic magnitude difference between the ph-
ph current phasor with maximum magnitude and ph-ph current phasor with
minimum magnitude. Phase angle will be set to 0° all the time
1MRK505222-UUS C
Technical reference manual