Single Phase Relay Protection
Tester
A highly portable, cost-effective single-phase tester delivering AC150A and DC300V output with an integrated precision stopwatch. Ideal for fast electromagnetic and solid-state relay calibrations on-site.
Relay Protection Test Equipment
Precision secondary injection test sets
Single Phase Relay Protection
3-Phase Relay Protection
Tester
An embedded Windows-based 3-phase secondary injection tester (3x30A, 4x120V). Features DSP+FPGA technology, an 8.4-inch screen, and automated software for comprehensive microcomputer relay diagnostics.
6-Phase Relay Protection
Tester
Our flagship 6-phase tester offering massive 6x30A and 6x120V output. Equipped with a 10.4-inch display, it effortlessly handles complex transformer differential testing and automated standby switching simulations.
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Ensuring Grid Stability & Protection Reliability
Unmatched Precision
Utilizing advanced DSP+FPGA architecture and 16-bit high-precision DAC, our testers generate highly dense, pure sine waves, ensuring absolute accuracy for microcomputer relay calibration.
Field-Optimized Efficiency
Featuring embedded Windows operating systems, intuitive industrial touchscreens, and auto-test software modules to drastically reduce complex on-site wiring and calculation time.
Universal Compatibility
Effortlessly test a complete range of protection devices—from traditional electromechanical and magnetic relays to the latest IEC-standard modern microcomputer protections.
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.a
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 centerThe 6-phase tester can independently output 6 currents and 6 voltages simultaneously. This allows operators to test complex transformer differential protections and standby automatic switching without needing to constantly change the wiring during the test, saving immense time.
Absolutely. While optimized for modern microcomputer relays, our software includes dedicated manual modules and adjustable contact “jitter delay” settings specifically designed to overcome the contact bouncing issues of traditional electromagnetic relays.
No. Both the 3-phase and 6-phase models feature powerful built-in industrial computers, full-color screens, and integrated keyboards/touchpads. However, they do provide USB ports if you prefer to operate them via an external laptop using our software.
Our advanced 3-phase and 6-phase testers support parallel current output. By simply configuring the channels via our software, you can parallel the outputs to achieve up to 90A on the 3-phase model, and up to a massive 180A on the 6-phase model. This effortlessly accommodates heavy-duty or high-current protection testing scenarios on-site.
