3-14
IM 253710-01E
Wiring Example of a three-phase, three-wire system (3P3W)
• If power measurement modules are installed in all four slots, then two three-phase
three-wire systems can be set up (elements 1 and 2 and elements 3 and 4).
• The combination of elements that can be wired to the input terminals in the figure are
as follows. The rest of the elements can be wired to single-phase, two-wire systems.
Input Terminal 1
Input Terminal 2
Element 1
Element 2
Element 2
Element 3
Element 3
Element 4
±
±
R
S
T
SOURCE
LOAD
SOURCE
Input Terminal 1
I
U
±
±
LOAD
Input Terminal 2
I
U
±
±
I1
I2
U1
U2
I
I
U
U
±
±
R
S
T
Wiring Example of a three-voltage, three-current system (3V3A)
The combination of elements that can be wired to the input terminals in the figure are
as follows. The rest of the elements can be wired to single-phase, two-wire systems.
Input Terminal 1
Input Terminal 2
Input Terminal 3
Element 1
Element 2
Element 3
Element 2
Element 3
Element 4
SOURCE
LOAD
±
I
±
I
R
S
T
±
U
U
±
U
±
I
SOURCE
Input Terminal 1
I
U
±
±
LOAD
Input Terminal 2
I
U
±
±
R
S
T
±
I1
I2
I3
U3 U1
U2
Input Terminal 3
I
U
±
±
Wiring Example of a three-phase, four-wire system (3P4W)
The combination of elements that can be wired to the input terminals in the figure are
as follows. The rest of the elements can be wired to single-phase, two-wire systems.
Input Terminal 1
Input Terminal 2
Input Terminal 3
Element 1
Element 2
Element 3
Element 2
Element 3
Element 4
SOURCE
LOAD
±
I
±
I
R
S
T
±
U
U
±
U
±
I
N
SOURCE
Input Terminal 1
I
U
±
±
LOAD
Input Terminal 2
I
U
±
±
R
S
T
N
±
I1
I2
I3
U1
U2
U3
Input Terminal 3
I
U
±
±
3.7 Directly Wiring the Circuit under Measurement