Megger MIT420 Insulation/Continuity Tester

Product Code: MIT420

Megger MIT420 Insulation & Continuity Tester

**This model has been discontinued, replaced by the Megger MIT420/2 CAT IV Insulation Resistance Tester.**

The new Megger MIT400 series insulation and continuity testers has been designed for electrical testing by the utilities, industrial, commercial and domestic electricians. The wide range of features also makes the MIT400 series ideal for the maintenance and service/repair engineer. They replace the well-established BM400 insulation tester range, given greater functionality with simplified operation.

Megger MIT420 Key Features:

CATIV 600V applications
Insulation testing to 1000V and to 200GΩ
TRMS & DC Voltage measurement
Continuity testing at 200mA down to 0.01Ω
Analogue and dual digital display
Insulation & continuity limit alarms
PI/DAR and Timer function
Test result storage

Insulation Testing

Test voltages 250V to 1000V insulation test voltages available
Test Lock locks insulation test on continuously.
Actual test voltage is displayed on the smaller digital readout.
The insulation result on the larger digital display.
Analogue arc display to replicate the response of a moving coil display.
Polarisation Index (PI) and Dielectric Absorption Ratio (DAR) functions
Insulation testing from 10GΩ to 200GΩ
High quality flexible silicone test leads prevent measurement errors on higher GΩ ranges.
Test inhibit prevents testing if voltages in excess of 50 V are detected.
Insulation buzzer can be set to buzz if the insulation resistance is above a preset limit.

Continuity Testing

Auto test on circuit contact.
200mA or 20mA continuity test currents are available.
20 mA test current will considerably increase battery life.
Lead null - Lead resistance compensation (NULL) operates up to 9 Ω of resistance.
Buzzer ON-OFF selected by simple push button.
Continuity buzzer limit alarm is adjustable from 1 Ω to 20 Ω in 5 steps.

Analogue arc display

Full display width analogue arc.
Patented arc display shows charge and discharge characteristics not visible on a digital display.
Single pointer “needle” response is similar to a moving coil meter.
Logarithmic display for better low insulation value measurements.

Dual digital display

Large main digital readout for good visibility of all main measurement results

Second digital display for additional data such as:

Insulation test voltage.
Insulation leakage current.
Supply frequency (when measuring volts).
Test mode eg. PI, DAR or TI (Timed mode).

Storage & Downloading Results

The MIT420 is capable of saving test results for recall to the screen. A simple storage structure allows for a test number and screen results to be recalled individually.

Safety

Designed to be exceptionally safe to use, fast detecting circuitry prevents damage to the instruments if accidentally connected to live circuits or across phases. Specifically, all instruments: