Rugged & Compact, Essential Equipment for Professional Electricians: Measure Current and Voltage with a Single Instrument
Hioki clamp meters are best-in-class measuring devices incorporating
Hioki’ s expertise in current sensing technology. The 3280-10F is
an average rectifying 1000A 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.

Model No. (Order Code)

3280-10F/span>Average rectified
3280-70F3280-10F, CT6280 bundled model

Note: The 3280-70F includes both the meter and an AC Flexible Current Sensor.
1: AC CLAMP METER 3280-10F×1

CAT IV 300 V (Current)
CAT III 600 V (Current)
CAT III 300 V (Voltage)
CAT II 600 V (Voltage)

Key Features

• Measure the fundamental waveform component using the average rectified method
• Expanded -25 °C to 65 °C operating temperature range
• Connect the CT6280 flexible sensor to measure up to 4199 A in thick or paired wires
• Drop proof design withstands drop from a height of 1 meter

Using 3280 series AC clamp meters: Introduction to functionality and measurement methods

In addition to AC current measurement, these clamp meters provide voltage and resistance measurement as well as continuity check functionality.
Their compact size, low-profile design, and resistance to both rough handling and extreme temperatures make them essential tools for any electrician.

Using 3280 series AC clamp meters: Difference between mean value and true RMS measurement

Measurements taken with the Hioki 3280-10F (which uses the mean value method) and the the Hioki 3280-20F (which uses the true RMS method) are compared.
Observe the difference between readings from these two types of instruments when measuring a distorted waveform that contains harmonic components such as those produced by inverters and switching power supplies.

A pocket clamp meter that can use flexible sensors

When connected to an optional flexible current sensor, the 3280-10F 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.

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

The 3280-10F 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.

A tough, pocket-size clamp meter with an operating temperature range of -25°C to 65°C

The 3280-10F inherits the drop-proof durability of the previous 3280-10 (making it able to withstand being dropped onto concrete from a height of 1 m) and expands that instrument’s operating temperature range to -25°C to 65°C (from the previous 0°C to 40°C). As a result, it can be used in even harsher environments.

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

AC Current range41.99 to 1000 A, 3 ranges (50 to 60 Hz, Average rectified),
Basic accuracy: ±1.5 % rdg. ±5 dgt.
DC Voltage range419.9 mV to 600 V, 5 ranges, Basic accuracy: ±1.0 % rdg. ±3 dgt.
AC Voltage range4.199 V to 600 V, 4 ranges
(45 to 500 Hz, Average rectified),
Basic accuracy: ±1.8 % rdg. ±7 dgt.
Crest factorN/A
Resistance range419.9 Ω to 41.99 MΩ, 6 ranges, Basic accuracy: ±2 % rdg. ±4 dgt.
Other functionsContinuity: Buzzer sounds at 50 Ω ±40 Ω or less, Data hold, Auto power save, Drop-proof from height of 1 meter
DisplayLCD, max. 4199 dgt., Display refresh rate: 400 ms
Environmental protectionIP40 dustproof and waterproof
Power supplyCoin type lithium battery (CR2032) ×1, Continuous use 120 hours
Core jaw dia.φ 33 mm (1.30 in)
Dimensions and mass57 mm (2.24 in) W × 175 mm (6.89 in) H × 16 mm (0.63 in) D, 100 g (3.5 oz)
AccessoriesCARRYING CASE 9398 ×1, TEST LEAD L9208 ×1, Coin type lithium battery (CR2032) ×1, Instruction manual ×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)


Catalog: CLAMP ON HiTESTER SeriesDownload PDF  [3MB]English
Catalog: AC CLAMP METER 3280-10FDownload PDF  [2MB]English

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