• 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
• Bright LED, luminous LCD, test lead with bright LED lamp to illuminate near hand
• Continuity check via 200 mA testing
• Built in AC/DC voltage meter, useful for testing solar power generation systems and electric vehicles

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.

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.

Compare measured values to pre-set reference values to generate a pass or fail judgment with the Comparator function.

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*, letting you check for insulation integrity without needing to look at the instrument.

* Image shows model IR4057. IR4056 does not have a bar graph.

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.

* Image shows model IR4057. IR4056 does not have a bar graph.

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.

* Image shows model IR4016. IR4056 is a digital meter.