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4 Measurands and Recording
4.2 Measurands
4.2.3.2 Harmonics, Connection Types
Table 4-4
Harmonics, Connection Types in Power Systems
Measurand
Circuit
(x = 1 to 40)
H_Va-x
a-N
H_Vb-x
b-N
H_Vc-x
c-N
H_Ia-x
a
H_Ib-x
b
H_Ic-x
c
THDS_Va/Vab
a-N/ab
THDS_Vb/Vbc
b-N/bc
THDS_Vc/Vca
c-N/ca
THDS_Ia
a
THDS_Ib
b
THDS_Ic
c
44
1-phase
System
Balanced
(1I)
Harmonics, Voltage, Magnitude
x
-
-
-
-
-
Harmonics, Current, Magnitude
x
x
-
-
-
-
THDS, Voltage
x
-
-
-
-
-
THDS, Current
x
x
-
-
-
-
3-wire Networ
(Delta)
Unbal-
Unbal-
anced (3I)
anced (2I)
-
-
-
-
-
-
x
x
x
x
x
x
-
-
-
-
-
-
x
x
x
x
x
x
SENTRON PAC5100/5200, 7KM5212/5412, Device Manual
E50417-H1040-C568-A1, Edition 03.2015
4-wire Network
(Star)
Balanced
Unbal-
(1I)
anced (3I)
x
x
-
x
-
x
x
x
-
x
-
x
x
x
-
x
-
x
x
x
-
x
-
x
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