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Hioki 3291-50
AC Flip Clamp TRMS Clamp On HiTESTER

  • True RMS
  • Innovative flip clamp design
  • Flip display to see measurement readings from any angle
  • Max. 1000A, 3 ranges, Bar graph display
  • Filter out high frequency noises for a clean signal
  • Reversible display technology
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Hioki 3291 Shown

Product Information
Datasheet 1.6 MBPDF
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Function Description
Measurable conductor size ø30mm (1.18")max.
Rectification True RMS
Max. rated voltage to earth 600Vrms, Measurement category III
300Vrms, Measurement category IV
Measurement Range
(Auto Range switching)
filter ON : fc=180Hz
filter ON : ±1.5%rdg. ±5dgt. (50Hz to 60Hz)
filter OFF : ±1.5%rdg. ±5dgt. (45Hz to 66Hz)
±3.0%rdg. ±5dgt. (66Hz to 400Hz)
Accuracy Guaranteed Measurements 2A to 1000A
Crest factor 2.8 or less (up to 600A), 1.68 or less (1000A range)
Response Time 1.1sec. or less
Display update Rate 1.1sec. or less
Temperature Coefficient Add (0.05 × accuracy specifications)/°C (except 23°C ±5°C)
Effect of Conductor Position within ±5.0%
Other Functions Display hold, maximum value hold, reversible LCD display, backlight, auto power off, battery level indication
Usage Environment 0°C to 40°C/32°F to 104°F, 80%rh or less. (no condensation)
Storage Environment -10°C to 50°C/14°F to 122°F, 80%rh or less. (no condensation)
Standards Safety EN61010 Type A current sensor
EMC EN61326
Rated Voltage and maximum rated power DC3V, 25mVA
Power Supply Button type lithium battery (CR2032) × 1
Dimensions and mass 115g 1.97"x 5.35" H x 1.02" D, 4.1 oz.
Ordering Information
Model Description Buy Online Price
3291-50 Hioki 3291-50 AC Flip Clamp TRMS Clamp On HiTESTER Buy Now $219.95
Included Accessories
  • 1 - Carrying Case
  • 1 - Wrist strap
  • 1 - Button type lithium battery (CR2032 - test use only)
  • 1 - Instruction Manual
Optional Accessories
CT-101A Hioki CT-101A Line Splitter Discontinued