The ZXR-1A DC Resistance Tester is a cutting-edge instrument designed to replace traditional single and double-arm bridges for measuring DC resistance in inductive loads such as power transformers, low-voltage switches, and cable connections. With its advanced switching power supply technology, high-precision measurement capabilities, and user-friendly design, the ZXR-1A has become an indispensable tool for professionals in the power industry. This article explores its key features, technical specifications, and practical applications.
Key Features of the ZXR-1A DC Resistance Tester
1.Rapid Testing Speed
The ZXR-1A delivers a charging current of up to 1A, effectively compensating for the current inertia of large inductive loads. This accelerates core saturation, reducing charging time and enabling measurements hundreds of times faster than conventional bridges.
2.High Accuracy and Stability
Utilizing a four-terminal measurement method and constant-current power supply technology, the instrument ensures stable current output for inductive loads. Combined with imported high-quality components, it achieves a measurement accuracy of 0.5% and a resolution of 1μΩ, providing reliable and repeatable results even in noisy environments.
3.Dual Power Supply (AC/DC) and Portability
Equipped with a built-in rechargeable battery (12V DC) and supporting AC 220V input, the ZXR-1A is ideal for field applications. Its compact design (335×275×175mm, 2.8kg) and low power consumption (≤15W) enhance mobility and operational flexibility.
4.Enhanced Readability and Safety
A 4.5-digit LCD displays resistance values, while a supplementary 3.5-digit LCD shows ambient temperature or test current. This design overcomes sunlight readability issues common with LED displays. The built-in automatic arc suppression function further ensures operator safety during high-current tests.
Technical Specifications
1.Measurement Range: 1mΩ–2kΩ (6 ranges: 1mΩ–20mΩ, 20mΩ–200mΩ, 0.2Ω–2Ω, 2Ω–20Ω, 20Ω–200Ω, 200Ω–2kΩ)
2.Current Output: Programmable 1A (1μΩ–2Ω), 0.1A (2Ω–20Ω), 0.01A (20Ω–200Ω), 0.001A (200Ω–2kΩ)
3.Operating Conditions: Temperature 0℃–40℃, Humidity ≤85% RH
4.Display: Dual LCD screens for resistance, temperature, and current values
Applications in the Power Industry
1.Transformer Winding Resistance Testing
The ZXR-1A efficiently detects issues like loose connections, damaged windings, or contact degradation in power transformers, critical for preventive maintenance.
2.Switchgear and Circuit Breaker Contact Resistance Measurement
Ensures low-resistance contacts in switches and breakers, minimizing energy loss and overheating risks.
3.Cable and Welding Joint Evaluation
Identifies high-resistance faults in power cables or welded interfaces, enhancing system reliability.
Advantages Over Traditional Bridges
1.Eliminates Manual Balancing: Automates measurements, reducing human error.
2.Field-Ready Design: Combines battery operation, lightweight construction, and anti-interference capabilities.
3.Cost-Effective: Reduces downtime by accelerating tests for large transformers or complex networks.
The ZXR-1A DC Resistance Tester redefines efficiency and precision in resistance measurement for power systems. By integrating rapid testing, high accuracy, and rugged portability, it addresses the evolving demands of modern electrical diagnostics and maintenance. Whether for laboratory use or on-site troubleshooting, this instrument empowers engineers to deliver safer, more reliable power infrastructure.
GDZX is a manufacturer of power testing equipment, offering a wide range of product categories with comprehensive models and providing professional technical support. Contact: +86-17396104357.Website: https://www.highvoltage-testequipment.com/
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