7
System
connection
Application
I1 I2 I3 N U1 U2 U3 U12 U23 U31
U =
I =
P =
Q =
S =
-00
4 wires
3-phase symmetrical load
X - - X X - -
-
-
-
U1
I1
P1*3
Q1*3
S1*3
-01
1 wire
1 phase
X - - X X - -
-
-
-
U1
I1
P1
Q1
S1
-02
3 wires
3-phase symmetrical load
X - - - - - -
X
-
-
-
-
PI1U12
QI1U12
I1*U12*√3
-03
3 wires
3-phase symmetrical load
X - - - - - -
-
X
-
-
-
PI1U23
QI1U23
I1*U23*√3
-04
3 wires
3-phase symmetrical load
X - - - - - -
-
-
X
-
-
PI1U31
QI1U32
I1*U31*√3
-05
3 wires
3-phase symmetrical load
X - - - X X X X
X
X
-
I1
P1*3
Q1*3
S1*3
-09
3 wires
3-phase asymmetrical
load
X - X - X X X X
X
X
-
(I1+I3)*3/2
(P1+P3)*3/2
(Q1+Q3)*3/2
(S1+S3)*3/2
-11
4 wires
3-phase asymmetrical
load
X X X X X X X X
X
X
(U1+U2+U3)/3
(I1+I2+I3)/3
P1+P2+P3
Q1+Q2+Q3
S1+S2+S3
-11
4 wires
3-phase asymmetrical
load
Open Delta
X X X - X X X X
X
X
(U1+U2+U3)/3
(I1+I2+I3)/3
P1+P2+P3
Q1+Q2+Q3
S1+S2+S3
