Megger MIT515/2 Essential 5 kV insulation resistance testers

The MIT515/2 is engineered for high-voltage insulation testing with a dual-case rugged housing for enhanced durability and user protection in the field. It provides the capability to select test voltages (typically from 250 V up to 5 000 V) to suit different insulation systems. The instrument is capable of measuring insulation resistance values well into the multi-teraohm region — enabling accurate assessment of high-quality insulation over time. Key productivity features include an intuitive control layout, large back-lit digital/analogue display, built-in timer to record test duration, and automatic discharge of the test object after measurement to enhance safety. On-board safety features detect unwanted external voltage before a test, inhibit testing under unsafe conditions, and rate all terminals to a high CAT/OLM safety specification (e.g., CAT IV 600 V) for use on real industrial systems. The instrument can operate from its rechargeable battery or mains supply, ensuring flexibility on-site. Because it logs applied voltage, leakage current, capacitance and resistance, the MIT515/2 is ideal for both commissioning and preventive maintenance regimes where insulation performance trending is required.

Features

• Selectable test voltage up to 5 kV DC, enabling insulation testing of large motors, switchgear and cables.
• Insulation resistance measurement range extending into multi-teraohm values, supporting proactive insulation health trending.
• Large back-lit dual-mode digital/analogue display with real-time pointer plus numeric read-out for clear interpretation.
• Automatic discharge of the test object after measurement to enhance safety and prevent stored charge hazards.
• External voltage detection before test initiation; test inhibited if the circuit is live or unsafe.
• Rugged dual-case design with high ingress protection (e.g., equivalent to IP65 with lid closed) and high-safety terminal rating (e.g., CAT IV 600 V).
• Operation from rechargeable battery or mains supply for flexible field use and long-duration testing.
• Integrated timer to capture test duration and elapsed time, supporting standardised diagnostics such as polarization index (PI) and dielectric absorption ratio (DAR).
• Guard terminal included for high-accuracy insulation measurement by eliminating surface leakage currents.
• Wide application support: motors/generators, cables, switchgear, power distribution, renewable energy systems — enabling one instrument for multiple high-voltage insulation tasks.

Includes

• 3-meter lead set with medium-sized insulated clips
• Power lead
• Calibration certificate
• Graphical quick-start guide under the lid
• Dual-case housing with Velcro-on lid pouch