Hioki IR4056-20 Digital Insulation Tester 50 TO 1000V(1KV)

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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

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The fastest selling insulation tester in UAE, The Hioki IR4056 Insulation resistance tester (also known as Megger tester), is manufactured in Japan and can measure from 50V to 1000V.

The IR4056-20 comes in a Drop proof casing and offers a wide measurement range making it perfect choice for electricians, maintenance technicians, and engineers.

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

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)
Included 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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