DY4100 Digital Ground Resistance Tester Benefits and why you need it - Quickly test earth resistance of various earth systems including power systems and electrical installations to verify safety and compliance. - Measure Earth Ground Resistance with selectable ranges: 0, 20, 200, 2000 ohms. - Measure Earth Voltage from 0 to 30 V with an accuracy of ±3% plus 5. - More complete functions with higher accuracy, providing convenient and reliable operation. - Outdoor use ready due to a dust and wet proof structure, suitable for field conditions. Key specifications - Earth Ground Resistance ranges: 0 / 20 / 200 / 2000 Ω - Earth Voltage range: 0–30 V - Earth Voltage accuracy: ±3% + 5 - Structure: dust and wet proof for outdoor use Test capabilities - Tests earth resistance of various earth systems including power systems - Tests lightning conductors as well as resistance value of low resistance conductors - AC voltage test Use scenarios - New installation commissioning: verify earth ground resistance at multiple grounding points in a substation to ensure safety and performance before going online. - Lightning protection maintenance: assess the resistance of lightning conductors and verify ground path integrity for reliable protection. - Outdoor equipment testing: conduct earth resistance and voltage measurements at outdoor sites (dusty or wet environments) to ensure safe operation of electrical equipment and systems. Notes - The description preserves the original model DY4100 and its stated functions, ranges, and outdoor durability features.