Product Introduction

     Transformer DC resistance is a mandatory test item in transformer manufacturing for semi-finished and finished products, factory acceptance tests, installation, major overhauls, after tap changer adjustments, handover tests, and preventive tests by power departments. It can inspect the welding quality of winding connections and detect inter-turn short circuits in windings. It also checks whether each position of the voltage tap changer makes good contact, whether the actual position matches the indicated position, whether there are broken leads, and whether multi-strand parallel windings have broken strands. To meet the need for rapid measurement of transformer DC resistance, our company developed the NDZR-40A Transformer DC Resistance Tester. This instrument adopts new power supply technology, featuring compact size, light weight, high output current, good repeatability, strong anti-interference capability, and comprehensive protection functions. The entire unit is controlled by a high-speed microcontroller, offering a high degree of automation, with automatic discharge and discharge alarm functions. The instrument provides high testing accuracy, simple operation, and enables rapid measurement of transformer DC resistance.

Product Features

☆、The entire unit is controlled by a high-speed microcontroller, offering a high degree of automation and simple operation.

☆、The instrument adopts new power supply technology, with multiple current ranges and a wide measurement range, suitable for DC resistance measurement of large and medium-sized transformers.

☆、Comprehensive protection functions, reliably protecting against back EMF impacts on the instrument, ensuring more reliable performance.

☆、Audible discharge alarm with clear discharge indicators, reducing operational errors.

☆、Fast response speed.

☆、Intelligent power management technology, the instrument always operates at low power, effectively saving energy and reducing heat generation.

☆、320x240 dot matrix ultra-fine pixel 65K true color LCD,

☆、The instrument comes with a perpetual calendar clock and power-off storage, capable of storing 1000 sets of test data, accessible at any time.

☆、The instrument is equipped with RS232 and USB interfaces for computer communication and USB storage.

☆、Built-in panel-mounted micro printer, capable of printing measurement results in Chinese.

Product Parameters