Hioki 4057-20 Insulation Tester

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Hioki 4057-20 Insulation Tester is a highly versatile and reliable instrument designed for testing the insulation resistance of electrical equipment and circuits. This Insulation Tester is engineered to deliver precise and accurate measurements with a large LCD display with a good amount of brightness.

Applications: electricians, labs, maintenance technicians, and engineers, etc.

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Hioki 4057-20 Insulation Tester is an excellent choice for a wide range of applications. This Hioki Insulation Tester is compact in size and its lightweight design makes it easy to handle and transport, while its user-friendly interface makes the user easy to operate. This Insulation Tester also has advanced features like a Live circuit indicator, Automatic electric discharge, Automatic DC/AC detection, etc.

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 ±2 % rdg. ±2 dgt. ±2 % rdg. ±2 dgt. ±2 % rdg. ±2 dgt. ±2 % rdg. ±2 dgt. ±2 % rdg. ±2 dgt.
1st effective measuring range MΩ 0.200 – 10.00 0.200 – 25.0 0.200 – 50.0 0.200 – 500 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)

Additional information

Manufacturer

Hioki

Model No

4057-20

DC Voltage

4.2 V (0.001 V resolution) to 600 V (1 V resolution)

Accuracy

±1.3%

AC Voltage

420 V (0.1 V resolution) / 600 V (1 V resolution)

Accuracy

±2.3%

Low resistance range

10 Ω (0.01 Ω resolution) to 1000 Ω (1 Ω resolution)

Accuracy

±3 %

Display

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

Power Supply

4 AA alkaline batteries, included

Supply Scope

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

Response Time

Approx. 0.3 second

Dimension

159 mm (6.26 in) W × 177 mm (6.97 in) H× 53 mm (2.09 in) D

Weight

640 Grams

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