INSULATION TESTER IR4057-50

Quick Response Comparator Offering Reading Stability
in High-speed Digital Format

Hioki insulation testers or megohmmeters feature all-in-one designs including　built-in rugged cases and test lead storage compartments.　The IR4057-50 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.

CAT III 600 V

Key Features
• Wireless support. Transfers measurements to your smartphone or tablet and　allows you to quickly create reports with field photos and drawings. (Optional Wireless Adapter Z3210 is necessary)
• Wirelessly transfer measurement data to Excel forms for input (Will be supported by the 2021 upgrade)
• 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. : IR4057-50

Click here to see fullscreen video	Wireless support Wireless communication capability for even greater convenience than legacy model Compatible with Wireless Adapter Z3210 (optional). It transfers measurements to your smartphone or tablet and allows you to quickly create reports with field photos and drawings. For more information on the Z3210, click here.
	Transport to GENNECT Cross GENNECT Cross, a free app designed specifically for use with Hioki measuring instruments, lets you check and manage measurement results and create reports. The software provides a range of functionality that helps manage data in the field, including photographing measurement sites, placing measurement results on photographs, and saving hand written memos. *Optional Wireless Adapter Z3210 is necessary. Click here for GENNECT Cross special site
	Transport to the Excel® file Open an Excel® file and select a cell. The measured value being held on the instrument’s display will be transferred to the computer and entered into the selected cell. Optional Wireless Adapter Z3210 is necessary. It will be supported by the 2021 upgrade.
Click here to see fullscreen video	Product Video
Click here to see fullscreen video	How to Use Digital Insulation Resistance Meters - Basic Course This video explains how to use a digital insulation resistance tester to measure a distribution panel. ※ Shooting was done with Japanese model IR 4052-50. The global model name is IR 4057-50.
	Comparator function provides PASS/ FAIL decisions at a glance Compare measured values to pre-set reference values to generate a pass or fail judgment with the Comparator function. (also pair with insulation resistance measurement and low-resistance measurement) The insulation testers give you pass/ fail results using a beeping sound, LCD light, and indication right on the test lead with remote control switch (option), letting you check for insulation integrity without needing to look at the instrument.
	Robust, damage-resistant design These instruments feature a robust design that can withstand being dropped onto concrete from a height of 1 m. Difficult to damage, this insulation tester is ideal for use in the field.
	White LED lighting that’s easy to read in dim locations in the field The scale is lit by a white LED, ensuring that insulation resistance values are easy to read, even when using the instrument in a dim location.
	Measurement switch designed for outstanding ease of use The instrument’s measurement switch can be operated with just the thumb. Press for a single measurement or lift up for continuous measurement of insulation resistance.
	200 mA grounding line continuity check function The Insulation testers can perform EV and HEV continuity checks as well as resistance measurement of safety conductors in building electrical equipment as defined by IEC 60364.

Basic specifications (Accuracy guarantee period: 1 year, Accuracy guarantee period after adjustment made by Hioki: 1 year)

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. 0.3 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	Connection cable L4930 ×1, Alligator clip set L4935 ×1, Test pin set L4938 ×1, Neck strap ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×4

Catalog: INSULATION TESTER Series Download PDF [3MB] English