S22-M-RL and S20-M-RL Series Three-Dimensional Triangular Wound-Core Power Transformers
Product Introduction
Power transformers are essential electrical infrastructure products used in a wide range of power systems. For many years, laminated-core power transformers have been widely used in China and other countries, but their overall performance has not achieved a fundamental improvement.
The S22-M-RL and S20-M-RL series three-dimensional triangular wound-core power transformers developed by the company represent a new generation of transformer technology following conventional laminated-core and planar wound-core transformers.
These products feature a more合理 structure, improved performance and greater energy-saving benefits. They are designed as a new type of high-efficiency power transformer for modern power distribution systems.
With the continued construction and upgrading of urban and rural power grids and the development of various power projects, improving transformer technology and supporting national energy-saving and environmental protection policies have become increasingly important.
The three-dimensional triangular wound-core transformer uses conventional materials while providing lower operating noise, reduced energy loss and improved material utilization. Its performance meets international and domestic requirements for low-carbon development, energy conservation and emission reduction.
The product has been included among energy-saving products selected for national high-efficiency power plant projects and central budget investment programs for resource conservation and environmental protection. Relevant authorities have also issued documents supporting the promotion of this type of energy-efficient transformer.
The three-dimensional triangular wound-core transformer is regarded as a new-generation product that advances beyond traditional laminated-core and planar wound-core transformer designs.
The Difference Is in the Core
The triangular iron core has no cutting, punching or joints. This eliminates the horizontal and vertical seams found in conventional transformer cores and reduces magnetic resistance.
The cross-section of each core column is approximately circular, which improves the core filling factor. The three-dimensional triangular structure also creates three equal and shortest magnetic circuits, forming an ideal transformer core arrangement.
The three-dimensional triangular wound core is formed from continuous silicon steel strips that gradually change from narrow to wide and then from wide to narrow.
Three semicircular core frames are first wound separately and then assembled into a three-dimensional triangular structure. The three core columns together form an approximately circular cross-section.
This design creates completely symmetrical and equal three-phase magnetic circuits, shortens the iron yoke and improves the core filling factor.
The structure is widely recognized as an ideal power transformer core design. Its test performance is superior to that of conventional planar wound-core transformers.
The three-dimensional triangular wound core represents a major improvement in power transformer core design. It is therefore recognized as an energy-saving, environmentally friendly and ultra-low-noise green transformer solution.
Performance Advantages of the Three-Dimensional Wound Core
The three-dimensional wound-core transformer breaks away from the conventional planar core structure and adopts a three-dimensional triangular arrangement.
Three identical single-frame cores are combined to form a more合理 structure. This provides completely symmetrical three-phase magnetic circuits, supports balanced three-phase power, reduces magnetic resistance and excitation current, and significantly lowers no-load loss.
The design also provides greater mechanical strength and a more stable overall structure.
Main Performance Advantages
- Reduced no-load current and loss:
The transformer significantly reduces both no-load current and no-load loss. - Balanced three-phase magnetic circuit:
The symmetrical magnetic circuit prevents the generation of third harmonics. The output remains close to a sinusoidal waveform, helping maintain power supply quality. - Low operating noise:
The core is continuously wound on a specialized winding machine using trapezoidal silicon steel strips of changing width. The joint-free structure reduces noise caused by discontinuities in conventional laminated magnetic circuits. - Efficient heat dissipation:
Low no-load current and low no-load loss reduce heat generation in the core. The D-shaped semicircular iron yokes and continuous disc-type high-voltage windings create an efficient self-circulating cooling structure with upper, lower, internal and external ventilation paths. - Compact size:
The triangular structure improves space utilization. Compared with conventional transformers, the product has a smaller volume, a compact structure, an attractive appearance and a reduced installation footprint. - Good anti-theft performance:
The core and coils form an integrated structure. Because the coils cannot be removed without damaging the core, the transformer offers improved resistance to theft.
