3-13
IM 253710-01E
Before Starting Measurements
3
Wiring Example of a single-phase, two-wire system (1P2W)
If power measurement modules are installed into all four slots, four single-phase two-
wire systems can be set up.
SOURCE
LOAD
U1
I1
I
U
LOAD
U1
U
I1
I
SOURCE
SOURCE
LOAD
Input terminal
I
U
±
±
SOURCE
LOAD
Input terminal
I
U
±
±
±
±
±
±
Wiring Example of a single-phase, three-wire system (1P3W)
• If power measurement modules are installed in all four slots, then two single-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
SOURCE
LOAD
N
N
SOURCE
Input Terminal 1
I
U
±
±
LOAD
Input Terminal 2
I
U
±
±
±
±
±
±
I
I
U
U
I2
I1
U1
U2
3.7 Directly Wiring the Circuit under Measurement