
4�- OPERATION
The
MCA PLUS II
is a four-quadrant power analyzer (consumption and generation).
The device can operate according to three different measurement conventions:
LIFASA
measurement convention.
IEC
measurement convention.
IEEE
measurement convention.
The measurement convention is configured in the setup menu, see
“4.9.8. Measurement con-
vention”.
LIFASA
. measurement convention
0º
90º
180º
-90º
Capacitive
Capacitive
Inductive
Inductive
Generation
Power
Consumption
Power
Single-phase
Three-phase
Single-phase
Single-phase
Single-phase Three-phase
Three-phase
Three-phase
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
Figure 20: LIFASA measurement convention�
IEC
measurement convention
Q
P
Q1
Q2
Q3
Q4
P < 0 Q > 0
PF
<
0
Capacitive
Capacitive
Inductive
Inductive
P < 0 Q < 0
PF
<
0
P > 0 Q < 0
PF
>
0
P > 0 Q > 0
PF
>
0
Operation in the 4 quadrants (Q1, Q2, Q3, Q4)
0 +
0 +
cos φ
>
0
cos φ
>
0
Q1
Q4
+ 1
+ 1
cos φ values in the receiver operating mode (Q1,Q4)
Figure 21:Convenio de medida IEC�
31
Instruction Manual
MCA PLUS II
Содержание MCA PLUS II
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