JNCN Power provides high-performance Transformer Silicon Steel Cores and Laminations engineered for excellence. Designed to serve as the heart of modern power systems, our cores are characterized by ultra-low no-load losses, minimal noise levels, and superior mechanical integrity.

From 10kV distribution transformers to massive 110kV power units, we offer a comprehensive suite of lamination solutions that meet and exceed international efficiency standards, ensuring your transformers operate with peak reliability and a 20-year+ service life.

• Advanced "Zero-Stress" Manufacturing Our core processing utilizes internationally advanced, fully automated intelligent production lines. By operating in a dust-free, constant temperature, and constant humidity environment, we eliminate external variables. This end-to-end automation minimizes additional mechanical stress on the silicon steel, significantly reducing the "Process Coefficient" and preserving the material's original magnetic properties.

• Superior Magnetic Performance We specialize in producing cores with exceptionally low no-load current and partial discharge. By using premium cold-rolled grain-oriented (CRGO) steel and precision annealing, we achieve excellent magnetic flux distribution, which translates to a quieter, cooler, and more efficient transformer.

• Unmatched Dimensional Accuracy With our high-precision CNC slitting and shearing equipment, we guarantee minimal burrs (height <0.02mm) and perfect flatness. This precision allows for a higher stacking factor (space factor), optimizing the transformer’s size and weight while maintaining high mechanical strength and short-circuit resistance.

• Intelligent Supply Chain & Fast Delivery Our intelligent workshop doesn't just improve quality—it accelerates throughput. By integrating automated stacking and logistics, we offer some of the fastest lead times in the industry for 110kV-grade core solutions, helping you meet tight project deadlines.

We offer a full range of joint and step configurations to optimize the magnetic path and reduce noise according to your specific design requirements:

• Joint Types: Direct Seam, Half-Direct/Half-Mitered Seam, and Full Mitered Seam (45℃ Full Miter).

• Step-Lap Construction: Available in 3-step, 5-step, and 7-step configurations to maximize flux efficiency and minimize no-load loss at the joints.

• Customization: Full bespoke service—we can manufacture according to your provided drawings, specific core diameters, and window dimensions.

• Voltage Grade: 10kV, 20kV, 35kV, 66kV, 110kV

• Silicon Steel Grade: 23mm, 27mm, 30mm (Laser-scribed or Regular CRGO)

• Burr Height: ≤0.02mm

• Shearing Precision: ±0.1mm

• Insulation Performance: High-resistance surface coating for optimal eddy current suppression.