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HIOKI IR4057-20 5 Range Digital Insulation Resistance Tester Megohmmeters 50 to 1000V Periodic Inspection
Product Description:
- Hioki insulation resistance testers or megohmmeters feature all-in-one designs including built-in rugged cases and test lead storage compartments. The IR4057-20 is a 5-range, 50V to 1000V digital insulation resistance tester with bargraph, and delivers efficient functions and features to help shorten work time associated with field insulation testing.
- 5-range testing voltage of 50 V/100 MΩ to 1000 V/4000 MΩ
- Stable & high-speed digital readings, 0.3 second response time for 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 (Option L9788-11 or L9788-10)
- Continuity check via 200 mA testing
- Built in AC/DC voltage meter, useful for testing solar power generation systems and electric vehicles
Specifications:
- 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)
- Display: Semi-transmissive FSTN LCD with back lighting, bar-graph indicator
- Response time: Approx. 0.3 second for PASS/FAIL decision (at Hioki's conditions)
- 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 (at Hioki's conditions)
- 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, 640 g (22.6 oz)
Package List:
- 1 x HIOKI IR4057-20 Insulation Resistance Tester
- 1 x Test Lead L9787
- 1 x Neck strap
