Kikusui KHA3000, Operation Manual, Page: 30 / 392

30
KHA3000
Connecting the Voltmeter to External
Measurement Points
p. 57
This section explains how to connect the voltmeter of this product to external measurement
points. The explanation includes single-phase two-wire, single-phase three-wire, three-phase
three-wire and three-phase four-wire measurement circuits. For more information, refer to
"Connecting a Voltmeter to External Measurement Points".
Sensing at EUT connection terminals
Voltage sensing is performed with the voltmeter of this product connected to a terminal of the
EUT. Choose one of the following two methods:
• LOAD terminal sensing (set at the time of shipment)
• Sensing at EUT connection terminal
This product is shipped with the LOAD terminal sensing set. Voltage sensing terminals L and
V, and
± and N have been short-circuited with the accessory wire kit for short-circuiting the
voltage sensing terminals.
Sensing at EUT connection terminals is performed by removing the accessory wire kit for
short-circuiting the voltage sensing terminals and connecting the voltmeter to the EUT.
Parts to be prepared by the customer
The customer is requested to prepare wires used to connect between the voltmeter of this
product and EUT. The wire should be equivalent to UL1015 and AWG18 is recommended for
the wire diameter.
Outline of connection
Connect a wire from the VOLTAGE SENSING/INPUT terminal of this product to the EUT.
When connecting the wire to the VOLTAGE SENSING/INPUT terminal, give the conductor a
10 mm strip margin (indicated on the rear panel). Secure the wire by tightening the screw on
the terminal with the accessory screwdriver. Twist the wire as much as possible.
Using external PT (potential transformer)
p. 59
When the voltage of the device to be measured exceeds the maximum voltage range of this
product, a PT (potential transformer) may be connected.
See
WARNING
• This work has a risk of electric shock. For the equipment used for the measurement
circuit, be sure to disconnect the power cord from the outlet, turn off the switch on
the switchboard to which the power cord is connected, and turn off the POWER
switch.
CAUTION
Terminal G of this product is not a protective conductor terminal. It is not grounded even if
the wire is connected to terminal G. For terminals G and N, the respective SOURCE and
LOAD terminals are short-circuited internally.
See