Digital insulation tester IR4056-20

Brand: HIOKI

Model: IR4056-20

Made In Japan

5-Range, 50 to 1000V Digital Insulation Resistance Tester with Continuity Check

Hioki insulation resistance testers or megohmmeters feature all-in-one designs including built-in rugged cases and test lead storage compartments. The IR4056-20 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.

Rated output voltage 50 VDC 125 VDC 250 VDC 500 VDC 1000 VDC

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 AC 600 V (10s) AC 1200 V (10s)

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. 0.8 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 measurement of lower limit resistance value to maintain nominal output