NEWSnews
Precision Testing for Power Systems: The ZXHL-100P Contact Resistance Tester
Introduction
In high-voltage power systems, the contact resistance of switching control equipment directly determines operational safety and reliability. Excessive or unstable contact resistance can lead to overheating, arcing, and even catastrophic equipment failure. The ZXHL-100P Contact Resistance Tester addresses this critical need by combining advanced power electronics and digital circuit technology to deliver high-precision, stable measurements for both factory acceptance testing and on-site maintenance of high-voltage switches.
Core Technical Advantages
The ZXHL-100P is engineered to meet the rigorous demands of power system testing, with key features that set it apart in performance and usability:
Continuous High-Current Output: The tester provides fixed DC output currents of 50A or 100A, ensuring that contact resistance measurements reflect real-world operating conditions. This capability eliminates errors caused by low-current testing, delivering precise, repeatable results even for high-power equipment.
Exceptional Stability and Precision: Leveraging dual-channel high-speed 16-bit Σ-Δ AD sampling technology, the instrument achieves a maximum resolution of 0.01μΩ. Readings remain stable within ±1 digit error, with excellent reproducibility to support consistent test comparisons over time.
Intelligent and Robust Design: Auto range switching adapts to varying resistance levels, while thermal shutdown protection safeguards the device from overheating during prolonged testing. A built-in temperature compensation circuit and vibration-resistant components ensure reliable performance in harsh field environments.
User-Centric Operation: The tester features a rotary knob interface, large LCD display, and real-time data logging with up to 200 records stored internally. Communication via RS232 or USB enables data transfer and printing, streamlining test documentation for compliance and analysis.
Key Technical Specifications
Parameter | Specification |
Measuring Range | 0 ~ 2999.9μΩ |
Resolution | 0.01μΩ (0~99.99μΩ); 0.1μΩ (100.0~2999.9μΩ) |
Test Current | DC 50A / 100A (selectable) |
Accuracy | ±(0.5% rd + 2d) |
Continuous Working Time | 5s ~ 599s (programmable) |
Power Supply | AC220V ±10%, 50Hz |
Total Power Consumption | 600W |
Operating Environment | -10°C ~ 40°C, Humidity ≤80%RH |
Dimensions / Weight | 380×300×260mm / 8kg (excluding accessories) |
Applications and Value
The ZXHL-100P is purpose-built for two primary use cases in the power industry:
Factory Acceptance Testing (FAT): Validates contact resistance performance during manufacturing, ensuring high-voltage switches meet design specifications before deployment.
On-Site Maintenance: Supports routine and corrective maintenance of high-voltage switchgear, identifying wear, oxidation, or loose connections that could degrade performance over time.
By delivering laboratory-grade precision in a portable, rugged form factor, the tester empowers technicians to make data-driven decisions that prevent unplanned outages and extend equipment service life.
Conclusion
The ZXHL-100P Contact Resistance Tester represents a robust solution for contact resistance measurement in power systems. Its combination of high-current output, precision sampling, intelligent protection, and user-friendly design addresses the core challenges of high-voltage switch testing. For utilities and manufacturers alike, it provides a reliable tool to ensure the safety, efficiency, and longevity of critical power infrastructure.
GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/
