YOKOGAWA WT332E User Manual page 10

Safety Precautions
Failure to comply with the precautions below could lead to injury
or death or damage to the instrument.
Use the Instrument Only for Its Intended Purpose
This instrument is a power measurement instrument that can measure parameters such as
voltage, current, and power. Do not use this instrument for anything other than as a power
measurement instrument.
Check the Physical Appearance
Do not use the instrument if there is a problem with its physical appearance.
Use the Correct Power Supply
Make sure that the power supply voltage matches the instrument's rated supply voltage and
that it does not exceed the maximum voltage range of the power cord to use.
Use the Correct Power Cord and Plug
To prevent electric shock or fire, be sure to use the power cord for the instrument. The main
power plug must be plugged into an outlet with a protective earth terminal. Do not invalidate
this protection by using an extension cord without protective earth grounding. Further, do not
use this power cord with other instruments.
Connect the Protective Grounding Terminal
Make sure to connect the protective earth to prevent electric shock before turning on the
power. The power cord to use is a three-prong type power cord. Connect the power cord to a
properly grounded three-prong outlet.
Do Not Impair the Protective Grounding
Never cut off the internal or external protective earth wire or disconnect the wiring of the
protective earth terminal. Doing so may result in electric shock or damage to the instrument.
Do Not Use When the Protection Functions Are Defective
Before using this instrument, check that the protection functions, such as the protective
grounding and fuse, are working properly. If you suspect a defect, do not use the instrument.
Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable gasses or vapors. Doing so is
extremely dangerous.
Do Not Remove the Covers or Disassemble or Alter the Instrument
Only qualified YOKOGAWA personnel may remove the covers and disassemble or alter the
instrument. The inside of the instrument is dangerous because parts of it have high voltages.
Ground the Instrument before Making External Connections
Securely connect the protective grounding before connecting to the item under measurement
or to an external control unit. Before touching a circuit, turn off its power and check that it has
no voltage.
Measurement Category
This instrument is a measurement category II product. Do not use it for measurement category
III or IV measurements.
Install or Use the Instrument in Appropriate Locations
• Do not install or use the instrument outdoors or in locations subject to rain or water.
• Install the instrument so that you can immediately remove the power cord if an abnormal or
dangerous condition occurs.
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WARNING
IM WT310E-02EN