3�5�8�- Measuring Three-Phase Networks With A 3-Wire Connection And Transfor; Mers With An Aron Connection, Cvm-C10-Itf And Cvm-C10-Mc Models - Circutor CVM-C10 Instruction Manual

3�5�8�- MeASURINg ThRee-PhASe NeTWORKS WITh A 3-WIRe CONNeCTION AND
TRANSfORMeRS WITh AN ARON CONNeCTION, CVM-C10-ITf AND CVM-C10-MC MO-
DeLS�
figure 11: Three-Phase measuring with a 3-wire connection and transformers with an ARON connection, CVM-C10-
22
Measurement system:
V V V
L1 L2 L3
b a
a
A B A
L1
L2
L3
CVM-C10-ITf model:
The transformer secondary value must be 5A or 1A
CVM-C10-MC model:
The MC transformer secondary value is set to 0.250 A (fixed value)
POWER SUPPLY
Rc R2 R1
Ph-Ph
520V ~
V V
L1 L2
V V
V
L1 L2
L3
b
B
ITf and CVM-C10-MC and models�
Power
Supply
OUTPUTS
S0- S0+ S0+
RS485 INPUTS
A(+) B(-) I1 I2
Tc T2 T1
GND
Ph-N
300V ~
P1 P2 P1 P2 P1 P2
L1 L2 L3
V N
L3
S1 S2
S1 S2 S1 S2
S1
S2
P2
P1
S1
LOAD
P1
Instruction Manual
CVM-C10
S2
P2