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INSULATION TESTER IR4057

INSULATION TESTER IR4057

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

Digital Insulation Tester, Megohmmeter | IR4057-20  

• 5 ranges from 50 to 1000 V
• 600 V AC/DC meter
• 200 mA continuity check
• Digital bargraph
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SKU: IR4057 Category:



Description

Hioki insulation 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. Insulation Tester IR4057

Key Features

• 5-range testing voltage of 50 V/100 MΩ to 1000 V/4000 MΩ

• Digital bar graph • 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

Model No. (Order Code)

IR4057-20 with bar graph display
Guarantee3yearsCE
CATIII 600V

Product Video

■ Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

 

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) Insulation Tester IR4057

 

Display

 

Semi-transmissive FSTN LCD with back lighting, bar-graph indicator

 

Response time

 

Approx. 0.3 second for PASS/FAIL decision (based on in-house testing)

 

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 (based on in-house testing)
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) (including batteries, excluding test leads)

 

Accessories

 

Test Lead L9787 ×1, Neck strap ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×4

Insulation Tester  IR4057

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