TR-3990 series I Contact/Loop Resistance Tester
Short Description
A contact resistance tester (micro-ohmmeter) designed for precise low-resistance measurements. It measures contact resistance of high-voltage switches, circuit breakers, and metal connections with high accuracy. Ideal for testing conductor loops, welded joints, and precision micro-ohm resistance applications.
| TR-3990 Series is contact resistance tester, also known as micro-ohmmeter and Loop resistance tester is a product carefully developed by Tessio Technology Ltd. to measure various high-voltage switch contact resistance, high-voltage circuit breaker contact resistance, metal welding component connection resistance, metal conductor loop resistance, Instrument for precision microohm resistors. |
Feature
Four-wire test method.
Measuring Resistance range 0.01µΩ ~ 3500mΩ.
Test accuracy is readingx0.15%+0.5µΩ.
Current output : corase adjustment gear : ≤5A, 10A, 30A, 50A, 80A, 100A, 200A, 220A. Thin strip gear : step value 2.5A up to 87A gears of current.
Meet saftey regulations are EC61010-1, CAT III 600V, pollution level 2, JJG166-1993 "Verification Procedures for DC Resistors", "DL/T967-2005 Loop Resistance Tester and DC Resistance Rapid Tester Calibration Regulations.
