I. 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 production base in Mexico, providing comprehensive support for the mass-production quality inspection of new-energy transformers at that site. It serves 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. The company is a professional supplier specializing in transformer products, complete power supply systems, and transformer core components. With a standard factory space of 90,000 square meters and approximately 2,100 employees, its main product lines include inductive-mode power supplies, switch-mode power supplies, and special-purpose transformers, widely used in lighting, power, new energy, and industrial control applications.
Igor boasts a well-established global production network, operating digital factories in Jiangxi and Anhui provinces within China, while also establishing 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 advanced transformer testing technology, Nanke Electric helps Igor build a closed-loop digital quality-inspection system for its overseas supply chain.
II. 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, with capacity not exceeding 6,000 kVA).
(3) Frequency: 50/60 Hz
(4) Impedance: 4%–10% or lower
III. Test Items
1. Routine Tests (corely equipped with the Super Fully Automatic Distribution Transformer Test System)
This module features an automated operation mode characterized by “single wiring, one-click 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 high resource-reuse capability; 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 click.
(2) Transformer lightning impulse test.
3. Special Tests
This area requires separate wiring operations and is 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 analysis test
Oil withstand-voltage test
Oil dielectric-loss test
Oil moisture-content test
IV. Project Highlights
1. Full automation of local modules significantly improves quality and efficiency: Both the routine-test and temperature-rise-test modules achieve single wiring and one-click fully automatic testing, greatly reducing manual intervention and step-by-step operations, making them highly suitable for large-scale factory mass-production quality inspections. 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 Mexican and North American power industry standards.
2. Outstanding testing accuracy and authoritative, reliable data: High-precision partial-discharge and noise tests are supported by dedicated ancillary facilities, while key data such as load loss can be automatically converted to standard temperature, ensuring precise traceability of test results and helping customers smoothly pass stringent North American quality certifications.
3. Integrated multi-purpose 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 purchasing 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, automated calculations, and paperless report generation, perfectly meeting the high stability requirements of long-term continuous operation at overseas factories.
V. Commissioning Information
This project is scheduled to officially enter service at Igor’s Mexican production base in July 2026.
