Safety Voltages - National Instruments NI 9269 Getting Started Manual

Safety Voltages

Channel-to-channel
Continuous
Withstand
Channel-to-earth ground
Continuous
Withstand
Division 2/Zone 2
hazardous locations
applications (Channel-to-
channel and channel-to-
earth ground)
Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as MAINS voltage. MAINS is a hazardous live
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250 Vrms,
Measurement Category II
1,390 Vrms, verified by a 5 s
dielectric withstand test
250 Vrms,
Measurement Category II
2,300 Vrms, verified by a 5 s
dielectric withstand test
60 VDC,
Measurement Category I