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Hioki 3281
Digital Clamp On True RMS HiTester

The true RMS is shown in the distorted waveform

  • 600 A AC,  33 mm (1.30 in)
  • AC Current/Voltage, Frequencies, Resistance, Conduction check, Temperature (probe sold separately)
  • Wave peak value, Waveform distortion check
  • Auto-power off to prevent the power from being left on
  • Non-fuse type protects up to 600 V AC
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Hioki 3281 Shown

Product Information
Datasheet 243 KB PDF
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Specifications
AC Current range 30.00 to 600 A AC, 3 ranges (±1 % rdg. ±5 dgt. at 50 or 60Hz),
Effective value rectifier
Wave peak value at AC Current 75.0 to 1000 A peak, 3 ranges (±3 % rdg. ±5 dgt. at 50 or 60Hz)
AC Voltage range 300.0 or 600 V AC, 2 ranges (±1 % rdg. ±3 dgt. at 50 or 60Hz), Effective value rectifier
Wave peak value at AC Voltage up to 750 or 1000 V peak, 2 ranges (±3 % rdg. ±5 dgt. at 50 or 60Hz)
Other functions Distortion check: 1 to 5 Crest factor
Resistance: 1 k or 10 k-ohm range
Temperature: -50 to 150 °C (9462 TEMPERATURE PROBE required, sold separately)
Frequency: 100 or 1000 Hz
Mode: Slow/Peak/C.F./RMS/Record mode/Auto-off/Conduction
Analog output None
Frequency characteristics
(at AC current / voltage)
40 to 1000 Hz
Display section Digital / 3000 digit Bar graph / 35 seg.
Sampling rate 2 or 4 times/sec (Slow: 1 times/3 sec)
Crest factor (RMS) 2.5 (1.7 at 600 A, 600 V range)
Max. circuit voltage 600 V AC rms (insulated wire)
Power supply 6F22(006P) × 1, Continuous use 50 hours
Core jaw diameter 33 mm (1.30 in)
Dimensions (WxHxD) 2.44" x 8.58" x 1.54" (62 mm x 218 mm x 39 mm)
Weight 12.3 oz (350 g)
Ordering Information
Model Description Buy Online Price
3281 Hioki 3281 Clamp On HiTester (TRMS) Buy Now Sale $215.96
(Reg. $239.95)
Included Accessories
 
  • 1 - 9207-10 Test Lead
  • 1 - 9399 Carrying Case
  • 1 - Hand Strap
Included
Optional Accessories
L9207-10 Hioki L9207-10 Test Lead for the 325X,328X,380X,7016,DT428X Buy Now $13.95
9399 Hioki 9399 Carrying Case Buy Now $26.95
CT-101A Hioki CT-101A Line Splitter Discontinued