ABB Relion 650 Series Technical Manual page 101

1MRK 511 424-UEN B
Bay control REC650 2.2 IEC
Technical manual
Set value for the
parameter
VoltageInput
6 -3ZeroSeq
7 MaxPh
8 MinPh
9 UnbalancePh
10 Phase1-Phase2
11 Phase2-Phase3
12 Phase3-Phase1
13 MaxPh-Ph
14 MinPh-Ph
15 UnbalancePh-Ph
Note that the voltage selection from table
actual external VT connections. The three-phase VT inputs can be connected to
IED as either three phase-to-earth voltages, U
to-phase voltages U
L1L2
connection is entered as a setting parameter for the pre-processing block, which
will then be taken care automatically.
The user can select one of the current quantities shown in table
current restraint feature:
Comment
CVGAPC function will measure internally calculated zero sequence
voltage phasor multiplied by factor 3. This voltage phasor will be
intentionally rotated for 180° in order to enable easier settings for the
directional feature when used.
CVGAPC function will measure voltage phasor of the phase with
maximum magnitude
CVGAPC function will measure voltage phasor of the phase with
minimum magnitude
CVGAPC function will measure magnitude of unbalance voltage,
which is internally calculated as the algebraic magnitude difference
between the voltage phasor of the phase with maximum magnitude
and voltage phasor of the phase with minimum magnitude. Phase
angle will be set to 0° all the time
CVGAPC function will measure the voltage phasor internally
calculated as the vector difference between the phase L1 voltage
phasor and phase L2 voltage phasor (U
CVGAPC function will measure the voltage phasor internally
calculated as the vector difference between the phase L2 voltage
phasor and phase L3 voltage phasor (U
CVGAPC function will measure the voltage phasor internally
calculated as the vector difference between the phase L3 voltage
phasor and phase L1 voltage phasor ( U
CVGAPC function will measure ph-ph voltage phasor with the
maximum magnitude
CVGAPC function will measure ph-ph voltage phasor with the
minimum magnitude
CVGAPC function will measure magnitude of unbalance voltage,
which is internally calculated as the algebraic magnitude difference
between the ph-ph voltage phasor with maximum magnitude and ph-
ph voltage phasor with minimum magnitude. Phase angle will be set to
0° all the time
40 is always applicable regardless the
L1
, U and U , , and . This information about actual VT
L2L3 L3L1
Section 6
Multipurpose protection
-U )
L1 L2
-U )
L2 L3
-U )
L3 L1
, U and U , , and or three phase-
L2 L3
41 for built-in
95