Isolation Voltages - National Instruments 9425E Operating Instructions And Specifications

Isolation Voltages

Channel-to-channel........................... None
Channel-to-earth ground
Continuous ................................. 60 VDC,
Withstand
up to 2,000 m altitude .......... 1,000 V
up to 5,000 m altitude .......... 500 V
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 electrical
supply system that powers equipment. This category is for
measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
equipment, limited-energy parts of equipment, circuits powered by
regulated low-voltage sources, and electronics.
NI 9425E Operating Instructions and Specifications | © National Instruments | 11
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Measurement Category I up
to 5,000 m altitude
, verified by a 5 s
rms
dielectric withstand test
, verified by a 5 s
rms
dielectric withstand test