Hazardous Voltage
This icon denotes a warning
advising you to take precautions to avoid electrical
shock.
Safety Voltages
Connect only voltages that are within the following limits.
Maximum working voltage, channel-to-earth ground
Up to 2,000 m altitude
Continuous
400 Vrms,
Measurement Category III
Up to 5,000 m altitude
Continuous
400 Vrms,
Measurement Category II or
300 Vrms,
Measurement Category III
Division 2 and Zone 2 hazardous locations applications
Channel-to-earth
ground
300 Vrms,
Measurement Category III
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
NI 9244 Getting Started Guide
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© National Instruments
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