Annual Supply of 90 Tons of Shell-Type Transformer Cores to South Korea
A major South Korean power equipment manufacturer, long dedicated to the production and sales of high-power distribution and industrial transformers, has seen its products widely adopted in large-scale projects such as South Korea’s power grid upgrades and industrial production. The company has a high demand for shell-type transformer cores and maintains stringent quality requirements.In December 2024, after multiple rounds of screening and evaluation, the client ultimately chose to enter into an annual partnership with us. The initial order was for 90 tons of shell-type transformer cores, requiring strict adherence to IEC international standards to ensure stable product performance and long-term reliability. Additionally, the client required us to possess a consistent and stable supply capability to meet their annual production needs.
Upon receiving the client’s request, we treated it with the utmost importance and established a dedicated service team responsible for the entire process, including client liaison, solution design, production control, and delivery. Based on the project parameters and technical requirements provided by the client, we formulated detailed production plans and quality control schemes, clearly defining the timelines and quality standards for each stage—from raw material procurement to production, testing, packaging, and shipping. Additionally, we established a regular communication mechanism with the client to provide timely updates on production progress and quality status, enabling the client to stay informed about product production in real time.
End-to-End Control to Ensure Transformer Core Compliance
To ensure that the 90-ton shell-type transformer core fully complies with IEC international standards and the client’s technical requirements, we implement strict controls starting from the moment raw materials are received into the warehouse.We select high-grade silicon steel as raw material, which undergoes rigorous testing prior to warehousing to ensure compliance with material and performance standards; non-conforming materials are strictly rejected. During production, we utilize automated production lines to complete processes such as cutting, stacking, pressing, shaping, insulation, and testing. Each process follows standardized operating procedures and is supervised throughout by professional technicians and quality inspectors.
Precision cutting equipment is used during the cutting stage to ensure accurate core dimensions, with tolerances maintained within international standards. The stacking process employs a precision stacking technique to ensure the core is tightly packed, minimizing magnetic leakage and eddy current losses. High-quality insulation materials are used for insulation treatment to enhance the core’s insulation performance and durability.For testing, we utilize advanced inspection equipment to comprehensively evaluate each batch of products for loss, dimensions, appearance, and insulation performance. Complete test data is provided for every batch to ensure stable and consistent product performance. Additionally, we adhere to the ISO quality management system, maintaining full traceability throughout the process to ensure controllable product quality.
Bulk Delivery Establishes Long-Term Partnership for Transformer Cores
After 25 days of efficient production and rigorous testing, the production, packaging, and shipping of 90 tons of shell-type transformer cores were fully completed, and the shipment was successfully delivered to our South Korean client. Upon receipt of the goods, the client organized a professional team to conduct comprehensive inspections and on-site operational tests. The test results demonstrated that the product performance fully complies with IEC international standards and the client’s technical requirements, featuring low losses, high stability, and a long service life, fully meeting the operational needs of high-power distribution and industrial transformer projects.
The client highly commended our production capacity, quality control, and service standards. They officially designated us as their qualified transformer core supplier and signed a long-term supply agreement, specifying annual procurement volumes and cooperation details.We possess large-scale production capabilities and a mature international delivery system, enabling us to handle major orders both domestically and internationally. Through consistent quality, efficient delivery, and professional service, we provide customers with stable, efficient, and reliable shell-type transformer core products and services, helping them successfully complete various large-scale power projects.
JINMA Transformer Core Customization
HENAN JINMA ELECTRIC is a professional transformer core manufacturer specializing in the production of strip-wound cores made from amorphous metal materials, nanocrystalline alloys, silicon steel cores, and Permalloy nickel-based alloys. We provide professional customized solutions for shell-type transformer cores tailored to large-scale projects such as high-power distribution and industrial transformers.Our products are widely used in power transmission/distribution, industrial electronics, renewable energy, and the automotive industries. Production is overseen by experienced operators to ensure the reliable quality of every product. We welcome you to contact JINMA Transformer Core Manufacturer at any time to discuss your transformer core requirements; we will find the core solution best suited for your project.
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