3.5.14.- MEASURING SINGLE-PHASE NETWORKS, PHASE TO NEUTRAL, WITH A 2-WIRE
CONNECTION, CVM-C10-ITF, CVM-C10-MC AND CVM-C10-mV MODELS.
Measurement system:
Power
Supply
V
L1 N
L1
N
POWER SUPPLY
INPUTS
A(+) B(-)
GND
RS485
S1 S2
S1 S2
S1 S2
L1
P1 P2
L2
L3
300V
~
Ph-NPh-Ph
520V
~
NV
L3L2
V
L1
V
P1 P2
P1 P2
I1 I2
OUTPUTS
Rc R2 R1 Tc T2 T1
S0-
S0+ S0+
VL1
N
a b
A B
S1
S2
P1
P2
LOAD
Figure 17: Measuring Single-Phase Networks, phase to neutral, with a 2-wire connection, CVM-C10-ITF, CVM-C10-MC
and CVM-C10-mV models.
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 (xed value)
CVM-C10-mV model:
The transformer secondary value must be 0.333 V
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