DC Resistance Tester
Delivers 20A output with simultaneous true 3-phase testing and automatic degaussing. Rapidly and accurately measures the DC winding resistance of large-capacity power transformers.
transformer Testing Equipment
Transformer Testing Equipment
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Multi-function Ratio Analyzer
Automatically identifies vector groups and measures transformer turns ratio in just 3 seconds. Features a vast 0.8-20000 range and an intuitive 7-inch touch screen.
CT PT Analyzer
A lightweight, portable analyzer for comprehensive CT and PT testing. Utilizes an advanced low-frequency principle to safely measure high knee point voltages up to 30KV.
Capacitance and Tan Delta
Tester
Features dual-frequency anti-interference technology and a 10kV internal power supply. Accurately measures capacitance and dielectric loss even in severe electromagnetic substation environments.
Winding Deformation Tester
Utilizes advanced Sweep Frequency Response Analysis (SFRA) to detect internal mechanical distortion without opening the tank. Delivers precise automated diagnostic results in 1-2 minutes.
Transformer Comprehensive Test Bench
A fully customized, automated testing system designed for transformer manufacturers. Centralizes power, control, and measurement to perform all routine and special tests efficiently.
More Products
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Discover How This Product Benefits You
Superior Anti-Interference
Engineered with advanced digital filtering algorithms to reduce the effects of electromagnetic interference in substations and support stable measurements under the specified operating conditions.
High-Speed Automation
Auto-ranging, automatic current selection, and simultaneous three-phase testing help reduce repetitive manual adjustments and streamline on-site testing workflows.
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 responsive and professional 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.
