2-13
IM WT310E-02EN
Making Preparations for Measurements
2
Continuous maximum allowable input
Voltage input
Peak value of 1.5 kV or rms value of 1.0 kV, whichever is less.
Current input
Direct input
• WT310E and WT332E/WT333E
When the crest factor is 3: 0.5 A to 20 A range
When the crest factor is 6 or 6A: 0.25 A to 10 A range
Peak value of 100 A or rms value of 30 A, whichever is less.
• WT310E
When the crest factor is 3: 5 mA to 200 mA range
When the crest factor is 6 or 6A: 2.5 mA to 100 mA range
Peak value of 30 A or rms value of 20 A, whichever is less.
• WT310EH
When the crest factor is 3: 1 A to 40 A range
When the crest factor is 6 or 6A: 0.5 A to 20 A range
Peak value of 100 A or rms value of 44 A, whichever is less.
External current sensor input
Peak value less than or equal to 5 times the range.
CAUTION
Use measurement cables with dielectric strengths and current capacities that are appropriate
for the voltage or current being measured.
Example: When making measurements on a current of 20 A, use copper wires that have a
conductive cross-sectional area of 4 mm
2
or greater.
Attaching a measurement cable to this product may cause radio interference in which case
the user will be required to correct the interference.
2.5 Precautions When Wiring the Circuit under Measurement
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