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4 Measurands and Characteristics
4.1 Measurands
30
SICAM MMU 7KG9663, Device Manual
E50417-H1040-C514-A3, Edition 01.2016
4.1.3
Measurands Depending on the Connection Type
4.1.3.1
Operational Measurands
Table 4-1
Measurands for the Operation in Power Systems
Measurand
Circuit
1-phase
System
3-wire Network
(delta)
4-wire Network
(star)
Balanced
(1I)
Unbalanced
(3I)
Unbalanced
(2I)
Balanced
(1I)
Unbalanced
(3I)
AC 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, b, c
Σ
Vph/3
Σ
Vph/3
Σ
Vph/3
a-N
Σ
Vph/3
Vunbal
a-b, b-c,
c-a
x
x
x
x
HVa
a-N
x
x
x
HVb
b-N
x
HVc
c-N
x
AC 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
x
Iavg
a, b, c
x
x
Σ
Iph/3
Iunbal
a, b, c
x
x
x
HIa
a
x
x
x
x
x
x
SICAM-MMU_7KG9663_US.book Page 30 Monday, December 7, 2015 12:22 PM