YOKOGAWA WT332E User Manual page 74

2.10 Wiring the Circuit under Measurement When Using Current Sensors
Shunt-type current sensor
I
±
Position on the (Grounded) Circuit under Measurement That You Should Connect
the Shunt-type Current Sensor To
Connect the shunt-type current sensor to the power earth ground as shown in the figure below. If
you have to connect the sensor to the non-earth side, use a wire that is thicker than AWG18 (with
a conductive cross-sectional area of approximately 1 mm
to reduce the effects of common mode voltage. Take safety and error reduction into consideration
when constructing external current sensor cables.
Ungrounded Measurement Circuits
When the circuit under measurement is not grounded and the signal is high in frequency or large
in power, the effects of the inductance of the shunt-type current sensor cable become large. In this
case, use an isolation sensor (CT, DC-CT, or clamp) to perform measurements.
Clamp-type current sensor
Connecting the 96001 Clamp-on Probe
When using the Yokogawa 96001 Clamp-on Probe, use the 758924 Conversion Adapter (optional
accessory).
2-40
Space between the connection wires
OUT H
Shielded wire
OUT L
Shunt-type current sensor
96001 (voltage output type)
B9284LK
This instrument
V
Voltage input terminals
±
External current sensor
input terminal
This instrument
V
Voltage input terminals
±
External current sensor
input terminal
758924
EXT input terminal
This instrument
2
) between the sensor and the instrument
LOAD
LOAD
WT310E/WT310EH
EXT input terminal
WT332E/WT333E
IM WT310E-02EN