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4 Measurands and Characteristics
4.1 Measurands
31
SICAM MMU 7KG9663, Device Manual
E50417-H1040-C514-A3, Edition 01.2016
HIb
b
x
x
x
HIc
c
x
x
x
Active 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
x
Power factor
PFa
a
x
x
PFb
b
x
PFc
c
x
PF
a, b, c
x
x
x
x
x
Phase angle
ϕ
a
a
x
x
ϕ
b
b
x
ϕ
c
c
x
f
a, b, c
x
x
x
x
x
Angle between the Phase-Ground Voltages a-b and a-c
ϕ
ab
a-b
x
ϕ
ac
a-c
x
Frequency
f
see
Table 4-5
x
x
x
x
x
x
Table 4-1
Measurands for the Operation in Power Systems (cont.)
Measurand
Circuit
1-phase
System
3-wire Network
(delta)
4-wire Network
(star)
Balanced
(1I)
Unbalanced
(3I)
Unbalanced
(2I)
Balanced
(1I)
Unbalanced
(3I)
SICAM-MMU_7KG9663_US.book Page 31 Monday, December 7, 2015 12:22 PM