Hioki IR4056-20 Insulation Tester


Hioki IR4056 20 Multimeter Insulation Electrical Test Equipment is an insulation resistance tester blended with a continuity function.

SKU: 13450

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Insulation Tester Hioki IR4056-20

Hioki IR4056-20 Multimeter Insulation Electrical Test Equipment AC/DC ir4056 20 hioki Multimeter Insulation Electrical Test Equipment is an insulation tester blended with a continuity function. The cleverly constructed device works flawlessly to provide a virtual display for easy viewing, auto discharge, livewire warning, a protective device for high voltage measurement, a test probe (Hioki #L9787), and a sliding cover for tidy storage. The renovation of electrical equipment and a wide range of applications both benefit from this item.

With a 5-range checking out voltage of 50 V/100 MO to 1000 V/4000 MO, the Hioki insulation tester 5kV stable and medium-speed digital readings, with a reaction time of 0.8 seconds for the PASS/FAIL option Drop-proof from 1 meter (3.28 feet) onto concrete (Option L9788-11 or L9788-10) Test lead with dazzling LED lamp to illuminate close at hand Checking for continuity with 200 mA testing Built-in AC/DC voltage meter is useful for inspecting electric vehicles and solar power systems.

to download the Hioki ir4056-20 manual click on the manual tab and for Hioki ir4056-20 pdf datasheet click on the datasheet tab. Also for Hioki ir4056-20 price and Hioki ir4056-21, HIOKI IR4057-50, and HIOKI IR4053 visit our website.

Digital Megohm Meter Hioki Features

  • 5-range testing voltage of 50 V/100 MΩ to 1000 V/4000 MΩ
  • Bright LED, luminous LCD, test lead with bright LED lamp to illuminate near hand (Also available in the IR4056-21)
  • Stable & medium-speed digital readings, 0.8 second response time of PASS/ FAIL decisions
  • Continuity check via 200 mA testing
  • Drop proof onto concrete from 1m (3.28 feet)
  • Built-in AC/DC voltage meter, useful for testing solar power generation systems and electric vehicles
Powerful Insulation Tester Hioki Ir4056-20


ir405620 insulation tester 5range 501000v Significantly improve testing

  • LED light shines a spotlight on the target
  • A red light warns of the live voltage detection
  • Measurement start switch
  • Identify pass/fail decisions with red or green light

traceable in-house calibration certificate

Hioki’s calibration services have been updated as of April 2022. When an instrument is calibrated and it is determined that its readings do not meet Hioki’s internal standards, the instrument will be adjusted. By continuing to use calibration services that only an instrument manufacturer can offer, customers can use their instruments with peace of mind while maintaining their accuracy. This calibration service allows us to return products to customers with minimal downtime as there is no downtime.

Frequently Asked Questions

What is an insulation tester?

Insulation testers use a high voltage, low current DC load to measure resistance in motor cables and windings to identify leakage currents and faulty or damaged insulation that can lead to arcing faults, burned circuits, and the risk of electric shock or fire.

How do I test my insulation meter?

To calculate the IR value, apply the voltage, measure the steady-state leakage current (after dielectric absorption and charging currents drop to zero), then divide the voltage by the current. If the insulation resistance meets or exceeds the required value, the test is successful.

ir405620 specifications what’s included:

  • Rated Output Voltage: 50VDC; 125VDC; 250VDC; 500VDC; 1000VDC
  • Effective Maximum Indicated Value: 100 MΩ ; 250 MΩ; 500 MΩ; 2000 MΩ; 4000 MΩ
  • Lower Limit Resistance: 0.05 MΩ; 0.125 MΩ; 0.25 MΩ; 0.5 MΩ; 1 MΩ
  • DC Voltage Measurement: 4.2 V (0.001 V resolution) to 600 V (1 V resolution), 4 ranges, Accuracy: ±1.3 % rdg. ±4 dgt., Input resistance: 100 kΩ or higher
  • AC Voltage Measurement: 420 V (0.1 V resolution) / 600 V (1 V resolution), 2 ranges, 50/60 Hz, Accuracy: ±2.3% rdg. ±8 dgt., Input resistance: 100 kΩ or higher, Average rectifier
  • Low Resistance Measurement:
    For checking the continuity of ground wiring, 10 Ω (0.01 Ω resolution) to 1000 Ω (1 Ω resolution), 3 ranges, Basic accuracy: ±3 % rdg. ±2 dgt., testing current 200 mA or more (at 6 Ω or less)
hioki ir405620 insulation tester 5range Accessories

• Neck strap
• LR6 alkaline battery ×4
• Instruction manual

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Hioki is a renowned Japanese brand known for its expertise in developing and manufacturing electrical measuring instruments. The company, Hioki E.E. Corporation, was established in 1935, and since then, it has committed itself to providing innovative solutions in the field of electrical measurement.

Hioki's product range is extensive, including devices such as digital multimeters, clamp meters, power meters, and oscilloscopes. These instruments are vital for various applications in research and development, maintenance, and production testing across industries like electronics, energy, and automotive. One of the key strengths of Hioki is its focus on precision and reliability, traits that are crucial in measurement instruments. Hioki’s products are designed to offer accuracy and durability, which make them preferred choices among professionals worldwide.

Moreover, Hioki emphasizes technological innovation and quality. The company invests significantly in research and development to keep up with evolving technological trends and to ensure their products meet the highest standards. This commitment to quality is reflected in their adherence to international certifications and standards. Hioki also values environmental sustainability, integrating eco-friendly practices in their operations and product designs. This includes efforts to reduce the environmental impact of their manufacturing processes and to design products that are energy efficient.

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Data Sheet


Technical Specifications of the Rated Output Voltage Meter

Voltage Rating (DC) 50 V 125 V 250 V 500 V 1000 V
Max Indicated Value (MΩ) 100 MΩ 250 MΩ 500 MΩ 2000 MΩ 4000 MΩ
Accuracy (±% rdg. ± dgt.) ±2 % + 2 dgt. ±2 % + 2 dgt. ±2 % + 2 dgt. ±2 % + 2 dgt. ±2 % + 2 dgt.
Lower Limit Resistance (MΩ) 0.05 MΩ 0.125 MΩ 0.25 MΩ 0.5 MΩ 1 MΩ
Overload Protection 600 V AC (10s) / 660 V AC (10s)
DC Voltage Range 4.2 V (0.001 V resolution) to 600 V (1 V resolution), Accuracy: ±1.3% + 4 dgt., Input resistance: ≥100 kΩ
AC Voltage Range 420 V (0.1 V resolution) / 600 V (1 V resolution), 50/60 Hz, Accuracy: ±2.3% + 8 dgt., Input resistance: ≥100 kΩ, Average rectifier
Low Resistance Range 10 Ω (0.01 Ω resolution) to 1000 Ω (1 Ω resolution), Accuracy: ±3% + 2 dgt., testing current ≥200 mA (at ≤6 Ω)
Display Semi-transmissive FSTN LCD with backlighting, bar-graph indicator
Response Time Approx. 0.8 second for PASS/FAIL decision
Other Functions Live circuit indicator, Auto electric discharge, DC/AC detection, Comparator, Drop proof, Auto power save
Power Supply LR6 (AA) alkaline batteries ×4, 20 hours continuous use
Dimensions and Mass 159 mm (6.26 in) W × 177 mm (6.97 in) H × 53 mm (2.09 in) D, 600 g (21.2 oz)
Included Accessories Power cord ×1, Instruction manual ×1, LCR application disc (Communications user manual) ×1