2-48
IM WT310E-02EN
Connecting to the WT310E/WT310EH
In the wiring examples that follow, the WT310E/WT310EH input elements, voltage input terminals, and
current input terminals are simplified as shown in the following figure.
WT310E/WT310EH
Input element
C
±
V
±
Voltage input
terminals
Current input
terminals
Wiring Example
The following figures show how to connect to the WT310E/WT310EH.
SOURCE
LOAD
L CT
VT
V
v
SOURCE
LOAD
VT
V
v
C
±
V
±
Pass-through CT
C
±
V
±
VT and pass-through CT
VT and CT
SOURCE
LOAD
VT
V
v
C
±
V
±
Clamp-type current
sensor that outputs
current
VT and Clamp-type Current Sensor
That Outputs Current
Note
Some CTs (including through types) require load resistance and power supplies. Check your CT’s manual.
2.11 Wiring the Circuit under Measurement When Using a Voltage or Current Transformer