NEW

AC CLAMP METER

CM3291

Large Jaw Lets You Clamp with Ease, ‌Measure thick cables right at the terminal

Hioki clamp meters are best-in-class measuring devices incorporating Hioki’ s expertise in current sensing technology. The CM3291 is a true RMS rectified 2000A AC clamp meter that features a broad operating temperature range of -25° C to 65° C, thin and compact clamp core and optional flexible current sensor that you can attach to let you get into the tightest spots. CAT IV 300 V CAT III 600 V Key Features • AC only, measure up to 2000 AAC • -25 °C to 65 °C operating temperature range • Also measure resistance, continuity, AC and DC voltage

Model No. (Order Code)

CM3291 True RMS

Guarantee3years
TrueRMS
CE
DROPPROOF

Get into tight spaces even with large jaw

The new AC Clamp Meter CM3291 features a new and innovative jaw design that lets you get between narrow cable gaps despite the large jaw offering, improving work efficiency at the worksite. The compact meter delivers a wide measurement range from a few amperes up to 2000 A.


True RMS measurement delivers accurate results for even distorted waveforms.

The waveform including harmonic components is calculated according to an RMS calculation formula and displayed. True RMS measurement yields accurate display values even when measuring a distorted waveform, for example from an inverter-equipped device or switching power supply.


A pocket clamp meter that can use flexible sensors

When connected to an optional flexible current sensor*, the CM3291 can be used to measure the current flowing in pairs of wires or in tangled or complexly routed wires around which it was not possible to apply a clamp-on sensor in the past. *AC FLEXIBLE CURRENT SENSOR CT6280 (4200 A AC, Φ130 mm)


Essential for electrical work: A thin card tester that fits in the pocket with all the capabilities of a clamp meter

The CM3291 delivers all the functionality of a clamp meter and card tester in the form factor of the latter. In addition to current measurement, this single instrument delivers voltage measurement, continuity check, and resistance measurement functionality.


Rugged, portable design that’s drop-resistant

Despite its thin, compact design, the CM3291 has an operating temperature range of -25°C to 65°C and can withstand being dropped from a height of 1 m onto concrete. It’s engineered for use in tough environments.


Comes with a sturdy and lightweight hard case

Mass: 200g (7.1 oz) Dimension: 222 mm (8.74 in)W × 115 mm (4.53 in)H × 46mm (1.81 in)D All accessories can be stored.


Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

AC Current range42.00 to 2000 A, 3 ranges (40 Hz to 1 kHz, True RMS),
Basic accuracy 45-66 Hz: ±1.5% rdg. ±5 dgt.
DC Voltage range420.0 mV to 600 V, 5 ranges, Basic accuracy: ±1.0 % rdg. ±3 dgt. (at 4.2 V range)
AC Voltage range4.200 V to 600 V, 4 ranges (45 to 500 Hz, True RMS),
Basic accuracy 45-66 Hz: ±1.8% rdg. ±7 dgt. (at 4.2 V range)
Crest factorFor 2500 counts or less, 2.5 Reduces linearly to 1.5 or less at 4200 counts But, 1.5 or less for 2000 A ACA range
Resistance range420.0 Ω to 42.00 MΩ, 6 ranges, Basic accuracy: ±2.0 % rdg. ±4 dgt. (at 420 Ω range)
Other functionsContinuity check: Buzzer sounds at 50 Ω ±40 Ω or less, Data hold, Auto power save, Drop-proof from height of 1 meter
Power supplyCoin type lithium battery (CR2032) ×1, Continuous use 70 hours
Core jaw diameterφ 46 mm (1.81 in), Jaw dimension: 65 mm (2.56 in) W × 13 mm (0.51 in) D
Dimensions and mass57 mm (2.24 in) W × 198 mm (7.80 in) H × 16 mm (0.63 in) D, 103 g (3.6 oz)
AccessoriesCarrying case ×1, TEST LEAD L9208 ×1, Coin type lithium battery CR2032 (for trial purposes only) ×1, Instruction manual ×1, Download guide ×1, Operating precautions ×1

CT6280 Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

Core jaw dia.φ 130 mm (5.12 in) (Cable cross-section diameter: 5 mm (0.20 in); tip cap diameter: 7 mm (0.28 in))
AC Current419.9 A/ 4199 A, 2 ranges (±3.0 % rdg. ±5 dgt.)
Cable length800 mm (31.5 in)

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Seminar Videos On Demand

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Seminar Schedule

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Catalogs

Catalog: AC CLAMP METER CM3281, CM3291 Download PDF  [1MB] English
Catalog: CLAMP METER Series Download PDF  [6MB] English

User Guides

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Manuals

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Instruction Manual English
Ver.00
사용설명서 Korean
Ver.00
Download Guide Traditional Chinese
Spanish
German
French
Italian
Indonesian
Thai
Vietnamese
Ver.00
使用说明书 Simplified Chinese
Ver.00
操作說明書 Traditional Chinese
Ver.00
Manual de Instrucciones Spanish
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Bedienungsanleitung German
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Manual Instruksi Indonesian
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Hướng dẫn sử dụng Vietnamese
Ver.00
คู่มือการใช้งาน Thai
Ver.00
Manuel French
Ver.00
Manuale di istruzioni Italian
Ver.01

Outline Drawings

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Ver.01

Technical Notes

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Declaration of Conformity


Ver.01

Drivers, Firmware

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Others

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Options

Bundled Accessories

The Carrying Case (accessory) is a hard type, 222 mm (8.74 in)W × 115 mm (4.53 in)H × 46mm (1.81 in)D

TEST LEAD L9208

70 cm (2.30 ft) length

Options

The C0205 is a bundled accessory for the CT6280. L4933, L4934 can be used on Test Lead L9208.

CONTACT PIN SET L4933

Attaches to the tip of the Test Lead L9207-10/DT4911, L9206, 60V DC/ 30V AC

SMALL ALLIGATOR CLIP SET L4934

Attaches to the tip of the L4932, L9207-10/DT4911, L9206, CAT III 300 V, CAT II 600 V

AC FLEXIBLE CURRENT SENSOR CT6280

• 4200 A AC Large current measurement • φ130 mm (5.12")

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Applications

Gallery

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