Circuit Breaker Analyzer
Tests 12 metal contacts simultaneously with an integrated DC supply. Features a 7-inch color screen for rapid, one-key mechanical parameter analysis, ensuring reliable operation even in harsh 500kV su
Circuit Breaker & Switchgear Test Equipment
Must-Have Instruments for Switchgear & Breaker Testing
Circuit Breaker Analyzer
Primary Current Injection
Tester
Delivers 200A-5000A continuous AC current with high 0.5-level accuracy. This ultra-lightweight, portable unit significantly reduces fieldwork fatigue while ensuring hyper-precise thermal relay and cir
Contact Resistance Tester
Utilizes high-frequency 100A constant current and 4-terminal wiring to completely eliminate test line resistance. Bluetooth-enabled for smartphone control, ensuring highly accurate, micro-ohm assessme
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Ensuring Switchgear Reliability & Compliance
Unmatched Precision
Equipped with advanced sampling circuits and up to 0.5-level accuracy, our testers guarantee highly reliable diagnostic data for critical power systems.
Field-Optimized Efficiency
Designed for the rigors of site work—featuring lightweight components, integrated power supplies, and intuitive color touchscreens to significantly reduce testing time.
Achieving Regulatory Compliance
Ensure your circuit breakers and switchgears strictly meet national and industry IEC standards, minimizing the risks of unplanned power outages.
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
Discover what our clients have to sya
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 centerTesting mechanical parameters (such as opening/closing time, bounce time, and synchronism) is crucial to ensure that high-voltage circuit breakers can quickly and reliably isolate faults. This prevents catastrophic damage to the power grid and ensures overall electrical safety.
Yes. The ZWKC-G2 features an integrated machine operation power supply that provides an adjustable DC20~270V output (up to 20A). This makes fieldwork incredibly convenient, as it eliminates the need for an external secondary power source during closing or opening tests.
The ZW5000S is mainly used for testing thermal relays, motor protectors, switch cabinets, and primary bus protection. Its high-capacity, low-weight design makes it ideal for scientific research, power railways, and petrochemical enterprise test sites requiring up to 5000A continuous current.
The ZWHR-100R utilizes a 4-terminal wiring method (Kelvin connection) combined with a high-frequency constant current power source. This completely eliminates the inherent resistance of the test cables, allowing for precise micro-ohm measurements of switch contacts and weld joints.
