Megger DLRO200-115 NLS Digital Low Resistance Ohmmeter

Overview

The Megger DLRO200-115 NLS is a digital micro-ohmmeter specifically designed to measure contact resistance in high-voltage circuit breakers, disconnecting switches, and busbar joints. It measures resistances from 0.1 µΩ to 1 Ω at currents up to 200 A, with filtered direct current output that eliminates magnetic transients to prevent breaker tripping. Its compact design weighing less than 15 kg and IP54 rating make it suitable for both workshop and field applications.

Key Features

• Test currents from 10 A to 200 A DC with filtered output to eliminate transients
• Measurement range from 0.1 µΩ to 1 Ω with better than 1% accuracy
• Up to 0.1 µΩ resolution
• Voltage measurement: ±0.5% ±0.1 mV
• Current measurement: ±0.5% ±0.1 A
• Large backlit LCD display for easy reading
• On-board memory for up to 300 test results with notes
• RS232 port for data download to PC or real-time printer output
• Three testing modes: Continuous, Auto, and Manual
• Compact size, weighs less than 15 kg

Applications

• High-voltage circuit breaker contact resistance testing
• Disconnect switch and isolator resistance measurement
• Busbar joint and connection testing
• Electrical equipment maintenance and diagnostics