Megger MIT1025/2 Advanced 10 kV insulation resistance testers

The MIT1025/2 is engineered for rigorous insulation testing tasks—such as cables, switchgear, generators and motors—where conventional test sets won’t suffice. It provides test voltages of 500 V, 1 kV, 2.5 kV, 5 kV and 10 kV, plus user-defined voltages across the span for tailored testing. With a resistance measurement range from 10 kΩ up to 20 TΩ at 10 kV, it can accurately assess excellent insulation that would otherwise fly under less capable instruments. Diagnostic test modes include insulation resistance (IR), timed IR (IR (t)), polarization index (PI), dielectric absorption ratio (DAR), dielectric discharge (DD), ramp test, and polarization-depolarization current (PDC). The instrument features advanced modes such as RE>Act™, which compensates for re-absorption currents so the results truly reflect insulation condition. With built-in e.g., Bluetooth or USB interface, time-date stamped logging, and export to software, this tester supports asset-management workflows. The rugged dual-case design, high safety ratings (CAT IV 600 V at altitude) and IP-rating (closed lid) make it suitable for heavy-duty industrial environments.

Features

• Selectable DC test voltages: 500 V, 1 kV, 2.5 kV, 5 kV and up to 10 kV (user-defined in steps).
• Insulation resistance range from 10 kΩ to 20 TΩ at 10 kV load.
• Diagnostic test modes including IR, IR(t), PI, DAR, DD, ramp testing and PDC to assess insulation condition.
• RE>Act™ measurement mode compensates for re-absorption current to provide more accurate results.
• High safety and rugged build: dual-case design, IP65 (lid closed), CAT IV 600 V rating at altitude, designed for industrial use.
• Built-in logging memory (time and date stamped), with USB/Bluetooth connectivity for data export and asset management.
• Guard terminal performance designed to exclude parallel leakage current, improving accuracy on high resistance measurements.
• High charge/discharge performance: rapid charge times, short discharge (<250 ms per µF from 10 kV to 50 V), making it suitable for large capacitance systems.
• Compatible with both battery and mains power, enabling flexibility on-site.
• Supplied with extensive lead sets and accessories suitable for high-voltage testing, supporting heavy test leads and remote assets.

Includes

• Quick start guide
• Power lead
• Screened USB cable with filters
• Lead set (3 x 3 m) with large 15 kV insulated clips: Rated for 15 kV DC; Flexible dual insulated silicon cable; Non-removable clips with locking HV plugs