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SPECIFICATION HIOKI IR4056-21 INSULATION TESTER
| 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 |
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| 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 |
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| 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. 0.8 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 | ||||
| Power supply | LR6 (AA) alkaline batteries ×4, Continuous use: 20 hours (Comparator off, backlight off, 500 V range, no load) 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) |
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| 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) (including batteries, excluding test leads) | ||||
| 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 |
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Introduction Hioki IR4056-21 Insulation Tester
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
Hioki Brand
Established in 1935, HIOKI E.E. CORPORATION (TSE: 6866) has grown to become a world leader in providing consistent delivery of test and measuring instruments through advanced design, manufacturing, and sales and services. Hioki test tools are trusted for their safety, reliability and quality by electrical professionals for use in rigorous environments around the world. Hioki products apply the latest and most advanced technologies to ensure the highest accuracy and safety.
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