MI 2892 Power Master
Theory and internal operation
173
GENERATED ACTIVE POWER
CONSUMED REACTIVE POWER
TYPE
Capacitive
CONSUMED ACTIVE POWER
CONSUMED REACTIVE POWER
TYPE
Inductive
GENERATED ACTIVE POWER
GENERATED REACTIVE POWER
TYPE
Inductive
CONSUMED ACTIVE POWER
GENERATED REACTIVE POWER
TYPE
Capacitive
90'
270'
0'
180'
P
Q
N
PF
DPF
P
·t
Q
·t
P+
Qi+
Ni+
PFi+
DPFi+
Ep+
Eq+
In
s
ta
n
ta
n
e
o
u
s
v
a
lu
e
s
R
e
c
o
rd
e
d
V
a
lu
e
s
→
→
→
→
→
→
→
P
-Q
-N
PF
DPF
P
·t
-Q
·t
P+
Qc-
Nc-
PFc+
DPFc+
Ep+
Eq-
In
s
ta
n
ta
n
e
o
u
s
v
a
lu
e
s
R
e
c
o
rd
e
d
V
a
lu
e
s
→
→
→
→
→
→
→
-P
Q
N
-PF
-DPF
-P
·t
Q
·t
P-
Qc+
Nc+
PFc-
DPFc-
Ep-
Eq+
In
s
ta
n
ta
n
e
o
u
s
v
a
lu
e
s
R
e
c
o
rd
e
d
V
a
lu
e
s
→
→
→
→
→
→
→
-P
-Q
-N
-PF
-DPF
-P
·t
-Q
·t
P-
Qi-
Ni-
PFi-
DPFi-
Ep-
Eq-
In
s
ta
n
ta
n
e
o
u
s
v
a
lu
e
s
R
e
c
o
rd
e
d
V
a
lu
e
s
→
→
→
→
→
→
→
C
O
N
S
U
M
E
D
A
C
T
IV
E
P
O
W
E
R
G
E
N
E
R
A
T
E
D
A
C
T
IV
E
P
O
W
E
R
GENERATED REACTIVE
POWER
CONSUMED REACTIVE
POWER
Figure 5.18: Consumed/generated and inductive/capacitive phase/polarity diagram
5.1.17
Flagged data
Standard compliance: IEC 61000-4-30 Class A (Section 4.7)
During a dip, swell, or interruption, the measurement algorithm for other parameters (for
example, frequency measurement) might produce an unreliable value. The flagging concept avoids
counting a single event more than once in different parameters (for example, counting a single dip as
both a dip and a voltage variation), and indicates that an aggregated value might be unreliable.
Flagging is only triggered by dips, swells, and interruptions. The detection of dips and swells is
dependent on the threshold selected by the user, and this selection will influence which data are
"flagged".
