Hioki IR4056-20 Insulation Tester

Product Highlights

• 5-range testing voltage 50 V/100 Mohms to 1000 V/4000 Mohms
• Stable & medium-speed digital readings, response time at PASS/ FAIL decision 0.8 second
• 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
• DC voltage measurement 4.2V (0.001V resolution) to 600V (1V resolution), 4 ranges, Accuracy: ±1.3% rdg. ±4 dgt., Input resistance: 100 kO or higher
• AC voltage measurement 420V (0.1V resolution) / 600V (1V resolution), 2 ranges, 50/60 Hz, Accuracy: ±2.3% rdg. ±8 dgt., Input resistance: 100 kO or higher, Average rectifier
• Low resistance measurement For checking the continuity of ground wiring, 10 O (0.01 O resolution) to 1000 O (1 O resolution), 3 ranges, Basic accuracy: ±3 % rdg. ±2 dgt., testing current 200 mA or more (at 6 O or less)
• Display Semi-transmissive FSTN LCD with back lighting, bar-graph indicator
• Response time Approx. 0.8 second for PASS/FAIL decision (at HIOKI's conditions)
• 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 (at HIOKI’s conditions) Number of measurements: 1000 times (at 5 s ON, 25 s OFF cycle, insulation measure of lower limit resistance value to maintain nominal output voltage)
• Dimensions, 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)

Each Unit Includes

• Test Lead
• Neck Strap
• Instruction Manual
• 4 LR6 (AA) alkaline batteries