Usage Notes
10
Before connecting measurement cables
• Do not use the instrument with circuits that exceed its ratings or specifica-
tions. Doing so may damage the instrument or cause it to become hot, result-
ing in bodily injury.
• Never exceed a current sensor’s input current rating. Doing so could destroy
the instrument and cause personal injury.
• Before turning the instrument on, make sure the source voltage matches that
indicated on the instrument's power connector. Connection to an improper
supply voltage may damage the product and present an electrical hazard.
• To avoid electrical accidents and to maintain the safety specifications of this
instrument, connect the power cord provided only to an outlet.
For safety reasons, disconnect the power cord when the instrument is not used.
Before connecting to the lines to be measured
To avoid electrical hazards and damage to the instrument, do not apply voltage
exceeding the rated maximum to the external input terminals.
• To avoid electrical accidents, confirm that all connections are secure. The
increased resistance of loose connections can lead to overheating and fire.
• Ensure that the input does not exceed the maximum input voltage or current to
avoid instrument damage, short-circuiting and electric shock resulting from
heat building.
• When the power is turned off, do not apply voltage or current to the voltage input termi-
nals, current input terminals, or current sensors. Doing so may damage the instrument.
• Note that the instrument may be damaged if the applied voltage or current exceeds
the measurement range.
While measuring
If an abnormality such as smoke, strange sound or offensive smell occurs, stop
measuring immediately, disconnect from the measurement lines, turn off the
instrument, unplug the power cord from the outlet, and undo any changes to the
wiring. Contact your authorized Hioki distributor or reseller as soon as possible.
Continuing to use the instrument may result in fire or electric shock.
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