NDHL-100A Loop Resistance Tester

Product Introduction

        This product is designed by combining high-frequency switching power supply technology and digital circuit technology in accordance with the electric power execution standard DL/T845.4-2004. It is suitable for measuring the loop resistance of switch control equipment. The test current adopts the nationally recommended DC 100A. It can directly measure the loop resistance under a current of 100A and display it digitally.

       The instrument measures accurately and performs stably, meeting the requirements for on-site high-voltage switch maintenance in power and supply departments, as well as loop resistance testing in high-voltage switch factories.

Product Features

☆、High Current: Utilizes new power supply technology to output high current continuously for extended periods, overcoming the drawbacks of pulsed power supplies' instantaneous current. Effectively breaks down the oxide film on switch contacts for reliable test results.
☆、Strong Anti-interference Capability: Under severe interference conditions, the last digit on the LCD screen remains stable within ±1 digit, ensuring stable and repeatable readings.
☆、Long Service Life: Employs high-precision resistors to effectively eliminate the impact of environmental temperature on measurement results. The use of quality connectors enhances vibration resistance.
☆、Portable: Compact size and lightweight design.

Technical Parameters

☆、Measurement Range: 1～1999μΩ.

☆、Resolution: 1μΩ.

☆、Test Current: DC 100A .

☆、Measurement Accuracy: 0.5%±1d.

☆、Display Method: Three-and-a-half-digit LCD (dual LCD screens).

☆、Power Supply: AC220V±10%  50Hz.

☆、Operating Environment: Temperature -10℃～40℃   Humidity: ≤80 %RH.

☆、Dimensions: 300 mm×270 mm×200 mm.

☆、Weight: 5Kg (excluding accessories).