Fully Automatic Intelligent DC Resistance Tester - Yangzhou Darui

Fully Automatic Intelligent DC Resistance Tester - Yangzhou Darui

Published: 2020-08-27 09:28:25

Category: DC HV Generator

Product Description

Fully Automatic Intelligent DC Resistance Tester

Darui Electric recommends:

The fully automatic intelligent DC resistance tester is an essential test item for transformers after handover, major repairs, and changes to tap changers. In normal circumstances, using traditional methods (bridge method and voltage drop method) to measure the DC resistance of transformer windings and high-power inductive equipment is a time-consuming and labor-intensive task. To change this situation, shorten measurement time, and reduce the workload of test personnel, a rapid DC resistance tester has been developed. With a high-speed microcontroller at its core, built-in rechargeable battery and charging circuit, and adopting high-speed A/D converter and programmable current source technology, it achieves unprecedented measurement results and highly automated measurement functions.

Working Principle

This instrument contains a DC constant current source. During measurement, the machine feeds a constant current to the test object, which produces a corresponding voltage drop across the measured body. This voltage value is taken back to the machine, and after amplification, sampling, and calculation, the resistance value is obtained. (R=U/I)

Technical Specifications

1. Operating Conditions:

Ambient Temperature: -15°C to 40°C

Relative Humidity: ≤85%RH

2. Test Range: High Range (1K): 1---9999Ω;

Low Range (1Ω): 0.000 ---2000mΩ

3. Measurement Accuracy: 0.2%±5 digits

4. Resolution: 1μΩ

5. Constant Current Source: 1A/2A

6. Can work with AC (AC220V) or DC power

PS: The DC resistance tester is used to test transformer winding impedance, so the open categories include winding impedance tester, transformer tester, and inductive test product tester. There are many names.

Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.

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Product Details

Fully Automatic Intelligent DC Resistance Tester - Yangzhou Darui

Working Principle