S13-M Triangular three-dimensional wound core transformer

Our company's independently developed S13-M-RL and S11-M-RL series three-dimensional triangular core power transformers represent a revolutionary advancement following the insertion type and wound core power transformers. They are a new type of energy-efficient transformer with a more reasonable structure, superior performance, and significantly improved energy efficiency.

Overview

◆ Power transformers are widely used basic power products. For decades, laminated power transformers have been used for a long time in China and around the world, and their performance has not been fundamentally improved. The S13-M-RL and S11-M-RL series three-dimensional triangular core power transformers developed by our company are a revolutionary generation of transformers following the inserted-plate and wound-core power transformers. It is a new energy-saving transformer with a more reasonable structure, better performance, and more significant energy saving. 
◆ With the construction and transformation of the second urban and rural power grids and the launch of various power projects, how to improve the technical content of power transformers, better implement the national energy conservation and emission reduction and environmental protection policies, and actively promote energy-saving, low-consumption, and environmentally friendly new products has become an important issue before us. The three-dimensional triangular wound-core power transformer produced by our company uses traditional materials, but has lower operating noise, lower loss, and better material saving, fully complying with the national and international policies and guidelines of low-carbon economy and energy conservation and emission reduction. This product has been included in the first batch of energy-saving products selected by national energy-efficient power plants; national central budget investment projects for resource conservation and environmental protection; the State Economic and Trade Commission and the former State Power Corporation have successively issued documents to promote this energy-saving product; Shenbian also promotes the triangular core transformer as an updated product of laminated and planar wound-core transformers.

A Unique Core

◆ The triangular core does not require cutting and has no punching holes, eliminating the transverse and longitudinal seams of traditional transformers and reducing magnetic resistance; the cross-section of the core column is circular, the core filling factor is maximized, and the three-dimensional triangular structure makes its three-phase magnetic circuits equal and shortest, realizing the ideal transformer core structure that people have long dreamed of. 
◆ The three-dimensional triangular wound core is made of continuous steel strip from narrow to wide and then from wide to narrow. First, three inner cores with a semicircular cross-section are wound, and then the three inner cores are assembled together to form a three-dimensional triangular wound core with three core columns having a nearly circular cross-section. The three-phase magnetic circuits are completely symmetrical and equal, shortening the yoke and increasing the core column filling factor. Its structure is recognized as the ideal structure for power transformers, which is incomparable to planar wound cores. Tests show that the various test data of the three-dimensional triangular wound core power transformer are superior to those of the planar wound core power transformer. The three-dimensional triangular wound core is a major breakthrough and leap in the core structure of power transformers! Its birth is hailed as a "revolution in power transformer cores." Therefore, the three-dimensional triangular wound core power transformer is a recognized energy-saving, environmentally friendly, and ultra-quiet green power transformer.

Product Features

1. Energy saving and consumption reduction, noise reduction

S13-M.RL New Energy-Saving Three-Dimensional Triangular Wound Core Transformer 
◆ Compared with the S7 transformer of the same capacity, the no-load loss is reduced by 55%, the load loss is reduced by 33%, the no-load current is reduced by more than 85%, and the noise is reduced by 8dB(A)~13dB(A) 
◆ Compared with the S9 transformer of the same capacity, the no-load loss is reduced by 50%, the no-load current is reduced by more than 80%, and the noise is reduced by 8dB(A)~11dB(A) 
◆ Compared with the national standard S11 transformer of the same capacity, the no-load loss is reduced by more than 25%, the no-load current is reduced by more than 70%, and the noise is reduced by 8dB(A)～11dB(A) 
◆ Compared with the national standard S13 laminated structure transformer of the same capacity, the no-load current is reduced by more than 70%, and the noise is reduced by 5dB(A)~8dB(A)

2. Two voltage compatibilities

S11-M.RL-/10-20 and S13-M.RL-/10-20 three-dimensional triangular wound core transformers have product series with both 10kV and 20kV voltage compatibilities. During the transition and update period from 10kV grid to 20kV grid, 
it greatly facilitates users.

3. Three-phase balance 
The three-dimensional triangular wound core is composed of three identical single frames, and the three core columns are arranged in an equilateral triangle. The magnetic path lengths of the three core columns are completely consistent and the shortest, and the losses of the three core columns are consistent, thus achieving three-phase balance.

4. Stable quality, improved production efficiency 
The three-dimensional triangular wound core is similar to the planar wound core in that both cores are wound on the production line and do not require cross-cutting equipment, eliminating quality fluctuations caused by manual lamination, stacking, and insertion and removal of yokes; compared with laminated core transformers, it can reduce 5-6 processes, so the production efficiency is high, the quality is stable and reliable, and it is less affected by human factors.

5. Enhanced short-circuit capability

The body structure of the three-dimensional triangular wound core transformer determines that its short-circuit capability is better than that of the planar transformer, for the following reasons: 
◆ Frames and pads are distributed around the body, and the three phases are subjected to uniform and symmetrical forces 
◆ The pressed area of the coil is increased by 15.7% compared to the planar coil arrangement 
◆ The clamp is a three-dimensional triangular frame structure, welded into one piece. Due to the stability of the three-dimensional triangle, the overall strength is high, making the three-phase force consistent.

6. Anti-theft 
◆ Due to technical reasons, laminated core transformers are prone to theft. By removing the fasteners of the body and knocking off the silicon steel sheets of the transformer, the three windings of the transformer are immediately separated from the silicon steel sheets, and 
the valuable materials such as silicon steel sheets and coils can be easily stolen and transported away. 
◆ Because the core of the wound core transformer is an integral unit, the core cannot be knocked apart, and the coil cannot be removed. It is also quite difficult to remove the entire core and coil, because a 100KVA transformer weighs 
400kg, and a 200KVA transformer weighs 650kg. It is not easy to separate valuable items such as silicon steel sheets and copper wires. Therefore, wound core transformers have better anti-theft properties. 
7. Small footprint, beautiful appearance 
◆ The transformer tank uses a near-triangular structure, so the volume is smaller than that of a conventional rectangular tank. It is compact, aesthetically pleasing, and has a small footprint. 
8. The product is economical and has a high cost-performance ratio. 
◆ Compared to laminated-type transformers with the same performance level, three-dimensional triangular wound-core transformers have lower losses and lower costs. Therefore, they can reduce investment costs and annual operating costs for users.

Main Technical Parameters