1. Project Overview
This project is a specialized large-scale transformer testing system custom-built by Nanke Electric for Igor New Energy (USA). The equipment has been successfully deployed at Igor’s Mexican production base, fully supporting the mass-production quality inspection of new-energy transformers at that site, and serving as a core quality cornerstone for Igor’s deep cultivation of the North American new-energy industry and its expansion into international markets. Notably, the routine test module of this equipment is powered by Nanke Electric’s flagship “Super Fully Automatic Distribution Transformer Test System,” achieving a high degree of digital intelligence and automation.
Eaglerise Electric & Electronic Co., Ltd. was founded in 1999 and is headquartered in Foshan, Guangdong, China. It is a professional supplier specializing in providing transformer products, complete power supply systems, and transformer core components. The company currently operates standard factory facilities spanning 90,000 square meters, with approximately 2,100 employees. Its main product lines include inductor-mode power supplies, switch-mode power supplies, and special-purpose transformers, widely used in lighting, power, new energy, and industrial control applications.
Igor has established a well-rounded global production network, operating digital factories in Jiangxi and Anhui provinces within China, while also setting up overseas production bases in the United States, Mexico, Thailand, and Malaysia. Specifically, the U.S. plant is planned to produce 21,000 distribution transformers annually, whereas the Mexican facility primarily serves the new-energy transformer market. Leveraging its leading transformer testing technology, Nanke Electric helps Igor build a closed-loop digital quality-inspection system for its overseas supply chain.
2. Maximum Testing Capabilities
(1) Voltage Levels: High voltage—35kV, 20kV, 10kV; Low voltage—0.4kV, 0.6kV, 0.8kV
(2) Capacity: Oil-immersed three-phase transformers up to 6,000 kVA (box-type transformers consider single-time wiring). Double-phase transformers undergo independent wiring during testing. (Applicable to 10kV, 20kV, and 35kV transformers with capacities not exceeding 6,000 kVA)
(3) Frequency: 50/60 Hz
(4) Impedance: 4%–10% or lower
3. Test Items
1. Routine Tests (Core Equipment: Super Fully Automatic Distribution Transformer Test System)
This module features an all-automatic operation mode characterized by “single wiring, one-button start.” After completing a single wiring sequence, the system can automatically execute and finish all standard tests with a single button press:
(1) Transformer insulation resistance test
(2) Transformer DC resistance measurement
(3) Transformer turns-ratio and vector group measurement
(4) Transformer no-load loss and no-load current measurement
(5) Calculation of transformer no-load current percentage
(6) Transformer no-load harmonic measurement
(7) Transformer load loss measurement and conversion to standard temperature
(8) Transformer short-circuit impedance measurement and conversion to standard temperature
(9) Transformer induced withstand voltage test
(10) Transformer power-frequency withstand voltage test
2. Type Tests
The type-test area boasts a high degree of resource reusability; when not conducting type tests, it can fully meet the requirements of routine testing, thereby maximizing the utilization rate of both space and equipment:
(1) Transformer temperature-rise test: supports single wiring and fully automatic completion with one button press.
(2) Transformer lightning-impulse test.
3. Special Tests
This area requires separate wiring operations, primarily used for in-depth performance verification and defect detection of transformers, with key indicators reaching international high-end standards:
(1) Winding deformation test
(2) Zero-sequence impedance, semi-direct impedance, full-direct impedance, and branch impedance tests
(3) Transformer dielectric-loss test, along with measurements of winding-to-ground capacitance and inter-winding capacitance
(4) Transformer noise test (equipped with a noise-shielding chamber)
(5) Transformer partial-discharge test (background and live partial discharge <5 pC, background noise <38 dB)
4. Transformer Oil Tests
Oil chromatography test
Oil withstand-voltage test
Oil dielectric-loss test
Oil moisture-content test
4. Project Highlights
1. Fully automated local modules significantly improve quality and efficiency: Both the routine-test and temperature-rise-test modules achieve single wiring and one-button fully automatic testing, greatly reducing manual intervention and step-by-step operations, making them highly suitable for large-scale mass-production quality inspections in factories. Precisely matched to overseas operating conditions, with strong product compatibility: The equipment’s voltage, capacity, and impedance parameters comprehensively cover mainstream oil-immersed transformers, perfectly compatible with dual-grid frequencies of 50Hz/60Hz, and precisely aligned with the power industry standards of Mexico and North America.
2. Outstanding testing accuracy and authoritative, reliable data: High-precision partial-discharge and noise tests are equipped with dedicated ancillary facilities, while key data such as load losses can be automatically converted to standard temperatures, ensuring precise traceability of test results and helping customers smoothly pass stringent North American quality certifications.
3. Integrated multi-use design with high resource utilization: The type-test area and routine-test functions can be flexibly reused, integrating a full suite of testing capabilities within limited factory space, thus helping customers substantially reduce costs associated with overseas factory construction and procurement of multiple sets of equipment.
4. Mature intelligent system ensuring long-term stable operation overseas: The equipment adopts Nanke Electric’s flagship NKT-S transformer intelligent testing system architecture, integrating data collection, automatic calculations, and paperless report generation, perfectly meeting the high stability requirements of continuous long-term operation at overseas factories.
5. Commissioning Information
This project is scheduled to officially enter service at Igor’s Mexican production base in July 2026.
