Name: Hioki IR4059 Insulation Tester
Brand: Hioki
SKU: 79671

Hioki IR4059 Insulation Tester

The Hioki IR4059 Insulation Tester is a comprehensive tool designed for efficient field insulation testing, offering features that cater to modern testing needs, especially for electric vehicles. It provides a 5-range testing voltage from 50 V/100 MΩ to 1000 V/4000 MΩ, which allows for flexible testing across various standards. The tester includes a digital bar graph and a multi-functional test lead with a remote switch that enhances work efficiency by incorporating a flashlight, remote test start, and LED lights for PASS/FAIL notification.

One of the standout features of the IR4059 is its Bluetooth compatibility, which enables data transfer to smartphones or tablets using Hioki’s free app GENNECT Cross, or directly to an Excel file, though the Wireless Adapter Z3210 is required for this functionality. The device is also designed with durability in mind, being drop-proof onto concrete from a height of 1m (3.28 feet), making it suitable for rugged field use.

Hioki IR4059 Key Features

5-range testing voltage of 50 V/100 MΩ to 1000 V/4000 MΩ
Digital bar graph
Multi-functional test lead with remote switch improves work efficiency: flashlight, remote test start, LED light for PASS/FAIL notification.
Stable and high-speed digital readings; 0.3 second response time for PASS/ FAIL judgment.
Bright LED, luminous LCD, test lead (included accessory: L9788-10) with bright LED lamp to illuminate near hand.
Continuity check via 200 mA testing
Built in AC/DC voltage meter, useful for testing solar power generation systems and electric vehicles
Easily transfer measurement data to your smartphone or tablet by using our free app GENNECT Cross or to an Excel® file. (Wireless Adapter Z3210 is necessary)
Drop proof onto concrete from 1m (3.28 feet)

Hioki IR4059 Specifications

Rated output voltage	50 V DC	125 V DC	250 V DC	500 V DC	1000 V DC
Effective maximum indicated value	100 MΩ	250 MΩ	500 MΩ	2000 MΩ	4000 MΩ
Accuracy 1st effective measuring range MΩ	±2 % rdg. ±2 dgt. 0.200 – 10.00	±2 % rdg. ±2 dgt. 0.200 – 25.0	±2 % rdg. ±2 dgt. 0.200 – 50.0	±2 % rdg. ±2 dgt. 0.200 – 500	±2 % rdg. ±2 dgt. 0.200 – 1000
Lower limit resistance	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), 4 ranges, Accuracy: ±1.3% rdg. ±4 dgt., Input resistance: 100 kΩ or higher
AC voltage range	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 range	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)
Display	Semi-transmissive FSTN LCD with back lighting, bar-graph indicator
Response time	Approx. 0.3 second for PASS/FAIL decision (based on in-house testing)
Other functions	Indicate MΩ measurement value after a lapse of one minute, Live circuit indicator, Automatic electric discharge, Automatic DC/AC detection, Comparator, Drop proof, Auto power save
Power supply	LR6 (AA) alkaline batteries × 4, Continuous use: 20 hours (based on in-house testing) Number of measurements: 1000 times (at 5 s ON, 25 s OFF cycle, insulation measurement of lower limit resistance value to maintain nominal output voltage)
Dimensions and mass	160 mm (6.30 in) W × 98 mm (3.86 in) H× 46 mm (1.81 in) D, 536 g (18.9 oz) (including batteries, excluding test leads)
Included accessories	Connection cable L4930 ×1, Alligator clip set L4935 ×1, Test pin set L4938 ×1, Neck strap ×1, Test lead set with remote switch (Red) LR9788-10×1, Protector Z5042×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×4

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Brand

Hioki

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.