Megger DLRO200-US Low Resistance Micro-Ohmmeter

Overview

The Megger DLRO200-US is a portable micro-ohmmeter designed for measuring very low resistance values at high currents. It measures resistances from 0.1 µΩ to 1 Ω and provides test currents from 10 A to 200 A DC, making it ideal for testing circuit breaker contacts, switch contacts, and busbar joints. The four-terminal measurement technique cancels test lead resistance from measurements. With on-board memory for 300 test results and RS232 connectivity, it suits both workshop and field applications.

Key Features

• Small and compact design weighing less than 15 kg
• Test currents from 10 A to 200 A DC
• 0.1 µΩ best resolution
• Four-terminal measurement to eliminate test lead resistance
• Large LCD display showing all test parameters and results
• On-board memory for up to 300 test results and notes
• RS232 port for data download to PC or real-time printer output
• Alphanumeric keypad for direct test current entry and result annotations
• Upper and lower limit settings to prevent excessive test currents
• Suitable for workshop, production floor, and field applications

Applications

• Circuit breaker contact resistance testing
• Switch contact measurement
• Busbar joint testing
• High-current electrical connection diagnostics