The Megger DLRO100X is a state-of-the-art low resistance ohmmeter designed for demanding industrial environments where precise measurement of low resistance connections is critical. With a measurement range from 0.1 µΩ to 2 Ω and a maximum output current of 100A, this instrument provides fast, reliable results for testing switchgear, busbars, cable joints, and other high-current connections. Its rugged construction, CAT IV 600V safety rating, and IP54 (lid open) protection ensure safe operation in harsh conditions, while the integrated Li-ion battery allows for up to 360 single tests or 30 minutes of continuous testing without mains power.
Key Features & Highlights
- Adjustable output current from 10A to 100A for versatile testing
- Four-terminal measurement method eliminates lead resistance errors
- Resolution of 0.1 µΩ with accuracy of ±0.05 µΩ (0.1 µΩ to 10 µΩ) and ±0.2% (10 µΩ to 2 Ω)
- Battery and mains powered for flexibility in the field
- Large, clear LCD display with time and date stamped memory for up to 999 readings
- USB data download for easy transfer of results
- Adjustable current ramp rates and test duration for customized testing
- Low ripple DC output for stable measurements
- Rugged design with IP67 (lid closed) and IP54 (lid open) ratings
- CAT IV 600V safety rating per IEC 61010
Applications
The DLRO100X is ideal for testing low resistance connections in power distribution systems, industrial plants, data centers, and renewable energy installations. It is commonly used for verifying the integrity of switchgear contacts, busbar joints, cable terminations, and other high-current paths. Its portability and battery operation make it suitable for both routine maintenance and troubleshooting in remote locations.





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