Circutor CVM-C5 Series, Instruction Manual

Page: 13 / 54

3�4�3�- THREE-PHASE NETWORK MEASURING WITH A 3-WIRE CONNECTION, MODELS
CVM-C5-ITF-485 AND CVM-C5-mV-485�
Measurementsystem:
S1 S2
P1
P2
S1 S2
P1 P2
S1 S2
P1 P2
Power
Supply
V
L1
V
L2
V
L3
L1
L2
L3
a
b
A B
a
b
A B
POWER SUPPLY S0+ S0-
OUTPUT
S1 S2 S1 S2 S1 S2
L1
P1 P2
L2 L3
300V ~
Ph-N Ph-Ph
520V ~
N V
L3 L2
V
L1
V
P1 P2 P1 P2
V
L1
V
L2
V
L3
RS485
A
(+)
B
(-)
GND
LOAD
Figure 5: Three-phase measuring with a 3-wire connection, models CVM-C5-ITF-485 and CVM-C5-mV-485�
13 Instruction Manual
CVM-C5-xxx-485