9
10
9
15
+
16
1
L1
S1
b
a
S2
2 3
5
P11P
N or L2
P1
P2
B
A
Supply
Output
c) Measurement of single-phase
active power through a current
and voltage transformer
5.2.2. Measurement of active power in a 3-phase 3-wire
network by a P13P transducer (Symmetrically loaded)
10
9
15
+
16
1 2
L1
3
5
8
P13P
Supply
Output
L2
L3
a) Direct measurement of active
power in a 3-phase 3-wire
network symmetrically loaded
