Circutor CVM-E3-MINI - Page 19

3.6.4.- MEASURING THREEPHASE NETWORKS WITH A 3WIRE CONNECTION: CVME3MINIITF
AND CVME3MINIITFWiEth
Measurement system: 3-3Ph
VL1 VL2
VL3
L1
L2
L3
V L3
L2
V
L1 V
VL1 VL2 VL3
a
b
A
B
a
b
A B
CARGA / LOAD
12
11
10
S1
S2
S1
S2
S1
S2
S1
S2
P1
P2
S1 S2
P1
P2
S1
S2
P1
P2
1
2
3
4
5
6
Alimentación Auxiliar
Power Supply
Figure 9: Three-Phase measuring with a 3-wire connection: CVM-E3-MINI-ITF and CVM-E3-MINI-ITF-WiEth.
To guarantee the insulation of the device and its category, it is necessary
to earth the S2 terminals of the transformers.
19
Instruction Manual
CVM-E3-MINI