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Measurands
Operational Measured Quantities Depending on the Connection Types
Table 2-13
Operational Measured Quantities Depending on the Connection Types in Power Systems
(10/12 cycles)
Measured Quan-
tity
Circuit
1-Phase
System
3-Wire
Network
(Delta)
Balanced
(1I)
3-Wire
Network
(Delta)
Unbalanced
(3I)
3-Wire
Network
(Delta)
Unbalanced
(2I)
4-Wire
Network
(Star)
Balanced
(1I)
4-Wire
Network (Star)
Unbalanced
(3I)
Voltage
Va
a-N
x
–
–
–
x
x
Vb
b-N
–
–
–
–
–
x
Vc
c-N
–
–
–
–
–
x
Vab
a-b
–
x
x
x
–
x
Vbc
b-c
–
x
x
x
–
x
Vca
c-a
–
x
x
x
–
x
V
N
a+b+c
–
–
–
–
–
x
Vavg
a-N
b-N
c-N
–
–
–
–
–
1/3 Σ V
ph-n
Vavg
a-b
b-c
c-a
–
1/3 Σ V
ph-ph
–
–
Vunbal
a-b
b-c
c-a
–
x
x
x
–
x
Current
Ia
a
x
x
x
x
x
x
Ib
b
–
–
x
x
–
x
Ic
c
–
–
x
x
–
x
I
N
a+b+c
–
–
–
–
–
x
Iavg
a+b+c
–
–
x
x
–
1/3 Σ I
ph
Iunbal
a+b+c
–
–
x
x
–
x
Fundamental Power Factor
cos φ(a)
a
x
–
–
–
–
x
cos φ(b)
b
–
–
–
–
–
x
cos φ(c)
c
–
–
–
–
–
x
cos φ
a+b+c
–
x
x
x
x
1/3 Σ cos φ
ph
Power Factor
PFa
a
x
–
–
–
–
x
PFb
b
–
–
–
–
–
x
PFc
c
–
–
–
–
–
x
PF
a+b+c
–
x
x
x
x
1/3 Σ PF
ph
Phase Angle
φa
a
x
–
–
–
x
x
φb
b
–
–
–
–
–
x
2.5.4
2.5.4.1
Basic Functions
2.5 AC Measurement
52
SICAM, SICAM P850/P855 7KG85X, Manual
E50417-H1040-C482-A9, Edition 03.2022
Summary of Contents for SICAM 7KG85X
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