Hioki IR4056-20 Insulation Tester
- Brand
- Hioki
- Model number
- IR4056-20
- Category
- Insulation Resistance Testers
5-range insulation tester, 50 V/100 MΩ to 1000 V/4000 MΩ, 0.8 s PASS/FAIL response, plus AC/DC voltage and low-resistance continuity; 1 m drop-proof.
Price and availability on request
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)
- Continuity check via 200 mA testing
- Built in AC/DC voltage meter, useful for testing solar power generation systems and electric vehicles
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. 0.8 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) |
| 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) |
| Contents | Test lead L9787 ×1, Neck strap ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×4 |
|---|
| Order code | IR4056-20 (Economic model) |
|---|
Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.
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