Duoyi DY4100 Earth Resistance Tester

product details Duoyi DY4100 Earth Resistance Tester is a specialized “Megger-style” instrument that measures how well an electrical system is connected to the earth. It is built with a dust-proof and moisture-proof structure, making it ideal for outdoor field use in varied environments. It replaces traditional manual-crank testers with a fast, digital interface that reduces human error. Key Features - High-Resolution Digital Display: Large 3.5inch digit LCD with a backlight for clear reading in dark electrical rooms or bright sunlight. - Wide Measurement Range: Capable of measuring resistance from 0.01Ω to 2000Ω, covering everything from high-sensitivity power grids to standard home grounding. - Dual Testing Modes: * Precision 3-Wire Test: Uses auxiliary earth bars for the most accurate results (standard professional method). - Simple 2-Wire Test: Allows for quick checks in areas where spikes cannot be driven into the ground (using existing conductors). - Earth Voltage Measurement: Automatically tests for “noise” or stray voltage (up to 30V) that could interfere with your resistance readings. - Safety Protections: Built-in overload protection and a “Data Hold” function to freeze readings for easy recording. - Durable Build: Housed in a rugged, heavy-duty case with a protective cover. Standard Package Includes: DY4100 Digital Earth Resistance Tester 2pcs Auxiliary Earth Bars (Spikes) 1 Set of Testing Wires (Red: 15m, Yellow: 10m, Green: 5m) 1 Set of Simple Testing Wires (Red/Green: 1.6m) 1pc Heavy-duty Oxford fabric carrying bag