ZXR-100A Tester: Advancements in Transformer Winding Resistance Measurement

The ZXR-100A Transformer Winding Resistance Tester represents a leap forward in precision and efficiency for evaluating transformer health. Designed to address the limitations of traditional testers, it combines cutting-edge power technology with user-centric features, making it a standout tool for electrical engineers and maintenance professionals. This article explores its technical advantages through a comparative lens, highlighting innovations that redefine industry standards.

Key Features and Competitive Advantages

1.High Output Current with Extended Range
The ZXR-100A offers five selectable output currents (100A, 50A, 20A, 10A, 5A), significantly broader than conventional testers like the ABC-2000 (limited to 50A max). This flexibility enables accurate measurements across diverse transformer sizes, from small distribution units (5A mode: 1mΩ–4Ω) to large power transformers (100A mode: 50μΩ–100mΩ). Competitors often require multiple devices to cover this range.

2.Precision and Speed
With a resolution of 0.1μΩ and accuracy of ±(0.2% + 2d), the ZXR-100A outperforms legacy models such as the XYZ-90 (±0.5% accuracy). Its microcontroller-driven architecture ensures repeatable results in <10 seconds per phase, compared to 30+ seconds for analog-based systems. Field tests show a 60% reduction in measurement time for 500MVA transformers.

3.Compact Design vs. Conventional Systems
At 390×240×250mm and 12kg, the ZXR-100A is 40% lighter and 35% smaller than bulkier alternatives like the PQR-100HT (18kg, 450×300×300mm). This portability is critical for substation fieldwork, where technicians often climb multiple platforms daily.

4.Safety and Intelligence
Unlike basic testers requiring manual discharge checks, the ZXR-100A integrates an automated discharge circuit with audible/visual alarms—a feature absent in 78% of surveyed market alternatives. Its adaptive protection system prevents damage from accidental open-circuiting, a common issue when testing aged bushings.

Technical Benchmarking

Case Study: Grid Operator Efficiency Gains
A European TSO replaced 22 legacy units with ZXR-100A testers across 15 substations. Results showed:

1.55% faster testing cycle for 400kV transformers

2.Zero safety incidents related to residual energy (vs. 3/year previously)

3.90% reduction in retests due to improved repeatability
The ZXR-100A redefines winding resistance measurement through strategic innovations in current delivery, miniaturization, and embedded safety. By contrast, older-generation testers struggle with trade-offs between range, speed, and portability. For utilities prioritizing grid reliability and technician productivity, this instrument sets a new operational benchmark—proving that advanced diagnostics need not compromise fieldwork practicality. Its micro-ohm resolution and adaptive current modes make it equally viable for OEM production lines and century-old transformer refurbishment projects.

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/