YOKOGAWA WT310 User Manual

2-40
IM WT310-02EN
Connecting to the WT310/WT310HC
In the wiring examples that follow, the WT310/WT310HC input elements, voltage input terminals, and
current input terminals are simplified as shown in the following figure.
WT310/WT310HC
Input element
C
±
V
±
Voltage input
terminals
Current input
terminals
Wiring Example
The following figures show how to connect to the WT310/WT310HC.
SOURCE LOAD
L
CT
VT
V
v
SOURCE LOAD
VT
V
v
C
±
V
±
Pass-through CT
C
±
V
±
VT and pass-through CTVT 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

YOKOGAWA WT310 Specifications

General

Model	WT310
Category	Digital Power Meter
Current Measurement Range	0.5 mA to 20 A
Weight	Approx. 3.5 kg
Voltage Measurement Range	15 V to 600 V
Frequency Range	100 kHz
Basic Accuracy	0.1%
Power Accuracy	0.1%
Display	LCD
Interfaces	USB, RS-232, GP-IB
Input Elements	1
Dimensions	213 mm x 88 mm x 346 mm