INSULATION TESTER IR4056-20, IR4057-20 Field Measuring Instruments 5-range INSULA5-range INSULATION & CONTINUITYTION & CONTINUITY CCATAT 600V600V IEC/EN 61557IEC/EN 61557 AC/DC automatic detection range ModelModel IR4056 IR4056--2020 with Bar Graph Model IR4057-20 QUICK & EASY Comparator Function Improves Work Ef ciency Identify the Insulation and Low Resistance Conditions with the PASS/FAIL Icon FAIL Alert with Red LCD and Audio Buzzer Stable Digital Readings are Easy to Read2 Ef cient, Safe Measurement with Digital Insulation Resistance Testers Solar PSolar Poowerwer Hybrid Hybrid Electric VElectric Vehiclesehicles PPeriodic Inspectioneriodic Inspection Electric VElectric Vehiclesehicles Comparator function provides PASS/FAIL decisions at a glance The comparator function compares measured values to pre-set reference values to generate a pass or fail judgment. (Can be used with insulation resistance measurement and low-resistance measurement.) The stable display is easy to read, increasing work efficiency. Identify PASS/FAIL using light and sound Instant judgment Since the IR4056-20 and IR4057-20 generate judgments The IR4056-20 and IR4057-20 notify the operator of pass and fail as soon as the test lead makes contact, it is possible to judgments using a beeping sound, LCD light, and comparator indicator make a rapid series of measurements in the manner of a on the test lead with remote control switch (optional accessory), allowing continuity check. determinations of compliance to be made without looking at the instrument. Option PASS When the measured value is greater than or equal to the reference value* Short beep No change Green Option FAIL Useful when there are When the measured numerous measurement value is less than the locations reference value* Continuous tone *In some cases, the capacitance component may prevent a judgment from Red Red being made until charging completes. *Insulation resistance measurement