DC Resistance Tester
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Integrating functions of three-phase tests (Yn, Y, △) and degaussing function, this new generation quick-testing device is ideal for measuring large transformers.
transformer Testing Equipment
Transformer Testing Equipment
DC Resistance Tester
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Discover How This Product Benefits You
Superior Anti-Interference
Engineered with advanced digital filtering algorithms to eliminate strong electromagnetic interference in substations, ensuring precise and stable readings every time.
High-Speed Automation
Say goodbye to manual adjustments. Features auto-ranging, auto-current selection, and simultaneous three-phase testing to cut your workload by 50%.
Multifunctional integration
Combines multiple test functions into one portable rugged unit, reducing the equipment burden for mobile testing teams.
Precision Starts from Production
Behind every reliable reading is our dedicated workshop. From high-grade component sourcing to 48-hour aging tests and final calibration, we meticulously craft durability and accuracy into every unit.
Why Choose Us
We offer flexible end-to-end services and customized optimal solutions. With strict quality control ensuring reliability and concierge-style after-sales support, we create lifetime records to provide you with the best and fastest service.
We provide full-process services from pre-sales through sales to after-sales.
We have a comprehensive quality inspection process to ensure the quality of every product you receive.
Concierge-style service, creating a “health record” for every device you purchase.
What they say about us
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Ordering Process
At Zhiwei Electric Power, we provide a clear, efficient, and hassle-free procurement experience to ensure you quickly receive high-quality testing solutions.
Technical Proposal & Quote
Don’t just buy a product; get a solution. Send us your testing requirements, and our engineers will recommend the optimal model with a detailed technical proposal and competitive offer.
PI Confirmation & Deposit
We confirm all specs via a formal Proforma Invoice (PI). Once terms are agreed upon and the advance payment is verified, your order immediately enters our production priority queue.
QC & Global
LogisticsEvery unit undergoes final QC testing before export packing. We handle shipping documentation (B/L, AWB) and provide tracking details to ensure smooth customs clearance and arrival.
Frequently asked questions
Go to help centerBeyond measuring voltage ratio, it serves as a critical diagnostic tool. It detects inter-turn short circuits, incorrect vector group connections, and tap-changer defects. It ensures the transformer’s internal winding structure is intact before energization and potential catastrophic failures when transformers operate in parallel.
It features true “Blind Testing” capability.It operates like a tablet with a 7-inch HD Color Touch Screen. The intelligent emWin GUI guides you intuitively. You can even view real-time voltage waveforms and harmonic analysis on-screen to diagnose faults visually.
It delivers a complete dataset: 1. Turn Ratio & Group (Y, D, ZN); 2. Phase Angle & Polarity; 3. Ratio Error calculation; 4. Excitation Current; and crucially, 5. Harmonic Analysis and Tap Changer Position tracking.
To prevent Circulating Currents. In parallel operations, even a slight ratio difference (<0.5%) generates massive circulating currents between transformers. This causes overheating and insulation failure. Our tester ensures the precise matching required for safe load sharing.
