Name
Type
Values (Range)
Unit
Description
ICOSFI
REAL
-
A
Measured current multiplied
with cos (Phi)
VOLTAGE
REAL
-
kV
Measured voltage value
VIANGLE
REAL
-
deg
Angle between voltage and
current
11.1.6
Operation principle
11.1.6.1
Measured quantities within CVGAPC
M13751-3 v3
General current and voltage protection (CVGAPC) function is always connected to
three-phase current and three-phase voltage input in the configuration tool, but it will
always measure only one current and one voltage quantity selected by the end user in
the setting tool.
The user can select to measure one of the current quantities shown in table
Table 189:
Current selection for CVGAPC function
Set value for the
parameter
CurrentInput
Comment
1
PhaseA
CVGAPC function will measure the phase A current phasor
2
PhaseB
CVGAPC function will measure the phase B current phasor
3
PhaseC
CVGAPC function will measure the phase C current phasor
4
PosSeq
CVGAPC function will measure internally calculated positive sequence
current phasor
5
NegSeq
CVGAPC function will measure internally calculated negative sequence
current phasor
6
3ZeroSeq
CVGAPC function will measure internally calculated zero sequence current
phasor multiplied by factor 3
7
MaxPh
CVGAPC function will measure current phasor of the phase with maximum
magnitude
8
MinPh
CVGAPC function will measure current phasor of the phase with minimum
magnitude
9
UnbalancePh
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
10
PhaseA-PhaseB
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
A
-I
B
)
Table continues on next page
Section 11
1MRK 511 408-UUS A
Multipurpose protection
336
Phasor measurement unit RES670 2.2 ANSI
Technical manual
Summary of Contents for Relion RES670
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