IR4056-20

Hioki

Insulation Tester

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This product is available in 5-7 weeks

Hioki's Most Popular Model Offering Reading Stability in Medium-speed Digital Format

Hioki insulation testers or megohmmeters feature all-in-one designs including built-in rugged cases and test lead storage compartments. The IR4056 is a 5-range, 50V to 1000V digital insulation resistance tester with efficient functions and features to help shorten work time associated with field insulation testing.

CAT III 600 V

Key Features

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

Specifications

More Information
Attribute	Value
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)
Included Accessories	[IR4056-20] Test lead L9787 ×1, Neck strap ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×4 [IR4056-21] Test lead set with remote switch L9788-11 ×1, Neck strap ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×4
Display	Semi-transmissive FSTN LCD with back lighting, bar-graph indicator
Response Time	Approx. 0.8 second for PASS/FAIL decision (based on in-house testing)
Other Functions	Live circuit indicator, Automatic electric discharge, Automatic DC/AC detection, Comparator, Drop proof, Auto power save
Rated Output Voltage	50 V DC 125 V DC 250 V DC 500 V DC 1000 V DC
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
Accuracy 1st effective measuring range MΩ (±4% rdg.)	±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) 600 V AC (10s) 660 V AC (10s)
Effective Maximum Indicated Value	100 MΩ 250 MΩ 500 MΩ 2000 MΩ 4000 MΩ
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)