Megger IMT100X Offers

For technicians, the main benefit is carrying one tester instead of several. The IMT100X combines insulation, continuity, low-resistance, voltage, temperature, and diagnostic functions, which saves time during installation and fault-finding.

For solar contractors, it is useful because it supports key PV safety and diagnostic checks on systems up to 1000 V AC/DC, helping cover a wide range of domestic, commercial, and utility-scale PV work.

For maintenance teams, the diagnostic insulation modes — including PI, DAR, timed IR, and temperature compensation — help trend asset condition over time instead of relying only on a single pass/fail reading.

For reporting, the IMT100X’s Bluetooth connection is the key advantage. Test results can be streamed live, stored by site or asset, organized with templates, and used for reporting through CertSuite Asset. The instrument can still operate as a standalone tester when software reporting is not required.

Features

• Resistance range from 100 Ω up to 200 GΩ
• Supports PI, DAR, timed testing, and temperature compensation using the supplied thermocouple
• Stabilised insulation test voltage accurate to -0%/+2% ±2 V, with output maintained within 0 to 2% throughout the test range to help prevent over-voltage damage to circuits or components
• Variable insulation test voltage selection from 10 V to 999 V for nonstandard test requirements, subject to the same stabilised output control
• Adjustable minimum resistance limit buzzer from 0.5 MΩ up to 1000 MΩ
• Measures AC from 10 mV up to 1000 V and DC from 0 to 1000 V, TRMS from 15 Hz up to 400 Hz
• Tests three-phase supply, motor direction of rotation, and phase sequence, with results displayed on screen
• Automatic resistance testing with ranges from 1 mΩ to 10 Ω and 0.01 Ω to 1.0 MΩ
• Automatic test current selection uses the preferred test current for the load resistance under test, including 200 mA testing up to 4 Ω
• Selectable automatic or manual testing with single-direction or bi-directional modes
• Bi-directional test option automatically reverses current without reconnecting test leads
• Lead resistance compensation (NULL) operates up to 10 Ω of resistance
• Adjustable maximum resistance limit buzzer from 1 Ω to 200 Ω in 12 steps
• Automatically identifies whether the main element of the load is inductive, capacitive, or resistive, with results displayed on screen
• Selectable inductance and capacitance testing with 120 Hz or 1000 Hz test frequency
• Meets the international requirements of IEC61010 and IEC61557
• Safety features include live-circuit detection and test inhibit on all measurements, except direction of rotation measurements, with user notification
• User-selectable insulation test terminal lockout voltage: 25, 30, 50, or 75 V; default is 50 V
• Detection and inhibit functions when the protection fuse has failed
• Suitable for CAT III applications and supply voltages up to 600 V
• Bluetooth connectivity streams results to CertSuite Asset for job, site, string, or asset-based reporting
• Supplied with six NiMH rechargeable batteries and charger, providing over 1200 insulation or continuity tests
• Rugged field design rated IP54 for rooftop and industrial use

Applications

• Testing insulation resistance on cables, panels, motors, generators, PV strings, and EV components
• Checking continuity and bonding on electrical installations
• Performing low-resistance tests on grounding, bonding, connections, and phase windings
• Verifying PV system polarity, insulation condition, continuity, capacitance, temperature, and diode-related checks
• Supporting EV workshops and manufacturers with insulation, bonding, voltage, and temperature testing