Huazheng HZ-3310E-I Handheld Portable DC Winding Resistance Tester

The Portable DC Winding Resistance Tester is an innovative product with a compact design, hand-held operation, and enhanced portability for easy carrying.This instrument is not only suitable for measuring transformers, mutual inductors, reactors, and other inductive test products, but also for testing copper bars, conductors, switch contacts, and other resistive components. The tester offers fast testing speed and high accuracy.

I. Functional Characteristics

1.Adaptive Power Supply: Supports both lithium batteries and 220V AC supply. A single charge allows for the continuous testing of the DC resistance of hundreds of transformers. The testing process is simple and convenient.

2.Adjustable Output Current: The output current has six selectable grades, with a maximum of 10A and a maximum output voltage of 25V. The current is automatically selected for convenience and speed.

3.Wide Measurement Range and High Accuracy: Measurement range from 500 µΩ to 50 kΩ with high precision.

4.Three-Phase Automatic Testing: The instrument can perform three-phase testing automatically, and the three-phase imbalance rate is calculated automatically.

5.Resistance Temperature Conversion: Includes a resistance temperature conversion function and can be equipped with a wireless temperature measurement module to measure the ambient temperature in real-time, ensuring the accuracy of the resistance measurement.

6.Comprehensive Protection Functions: Equipped with multiple protection features, such as back EMF protection, broken line protection, power-off protection, and over-heating alarm.

7.High-Visibility Display: Features a 5.6-inch high-brightness color LCD screen, ensuring visibility even under strong sunlight.

8.External Printer Support: Comes with an external printer for easy data printing.

9.Data Storage: Allows local storage and supports USB memory for data storage.

II.Technical Indicators

DC resistance test
Current gear	Measuring range	Current gear	Measuring range
10A	500µΩ~200mΩ	100mA	10Ω~200Ω
5A	10mΩ~1Ω	10mA	50Ω~2KΩ
1A	100mΩ~20Ω	1mA	500Ω~50KΩ
Technical index
Accuracy	±（Reading×0.2%+2 words）	Maximum resolution	0.1µΩ
Conditions of use and appearance
Working power supply	Built in lithium battery or external charger, charger input 100~240VAC，50HZ/60HZ
Charging voltage	16.8V	Charging current	≤3A
Charging time	About 4 hr	Use time	More than 8 hr
Host weight	1.6kg（Test line is not included)）	Dimension	246mm（L）×156mm（W）×62mm（H）
Use of temperature	-10℃~50℃	Relative humidity	≤90%，No dew