SG(B)12 Tridimensional Toroidal-Core Dry-type Transformers

SG(B)12 Tridimensional Toroidal-Core Dry-type Transformers

Tridimensional Toroidal-Core dry-type transformers is a kind of energy-saving power transformer, it creatively to reform the traditional fold type magnetic circuit structure and layout of three-phase power transformer, make the product more optimized performance, such as magnetic circuit of...

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Tridimensional Toroidal-Core dry-type transformers is a kind of energy-saving power transformer, it creatively to reform the traditional fold type magnetic circuit structure and layout of three-phase power transformer, make the product more optimized performance, such as magnetic circuit of three phase symmetrical, power saving effect is remarkable, greatly reduce noise, heat dissipation and stronger overload capacity, compact structure, small volume, etc.

Structure and characteristics

1. Optimization of magnetic circuit

(1) There is no joint between the core layer of three-dimensional volume, and the magnetic field is evenly distributed. There is no obvious high resistance area, and there is no distortion of the flux density in the seam.

(2) The direction of magnetic flux is exactly the same as that of silicon steel

(3) The length of the three-phase magnetic circuit is exactly the same, and the length of the three-phase magnetic circuit is the shortest

(4) The three-phase magnetic circuit is completely symmetric and the three-phase no-load current is completely balanced

2. Low loss and significant power saving effect

(1) Three dimensional wound core magnetization direction completely consistent with the rolling direction of the silicon steel sheet, and no pick 槰 lap between the core layer, uniform flux distribution in all parts of the magnetic circuit, no obvious high resistance area, no seams distortion phenomena of the magnetic flux density.On the premise of the same material, the coefficient of iron loss of the coil core is decreased from 1.3-1.5 to 1.05, which can reduce the core loss by 10-20%.

(2) Because of the special three-dimensional structure, the iron yoke of the iron core is 25% less than the traditional laminated iron core, and the reduced Angle weight accounts for about 6% of the core weight.

(3) Shear processing of silicon steel sheet will worsen its permeability performance, three dimensional wound core high-temperature (800 ℃), vacuum nitrogen inflator annealing treatment, not only eliminates the core mechanical stress, and refine the magnetic domain of silicon steel sheet, improve the ability of silicon steel sheet secondary recrystallization, makes the performance of the silicon steel sheet greatly superior to the performance of the factory.

(4) It is determined that the no-load loss of three-dimensional transformer is 25 to 35 percent lower than that of the national standard, and the no-load current can be reduced by 92 percent.

3. Low noise

The origin of the noise of transformer body vibration is:

- the magnetostriction of the steel sheet causes the core to vibrate and produce the noise

The electromagnetic attraction generated by the leakage of the silicon steel joint and the laminated sheet causes the core to vibrate and generate the noise

- the magnetic field of the transformer is too high, near or reaching saturation point, and the leakage of magnetic flux is too large to generate noise

Due to three dimensional wound core is the silicon steel strip material on dedicated core winding machine uninterrupted, continuous rolling closely and become, no seams, won't produce as folding chip in a hurry of the noise due to the magnetic circuit of discontinuity.At the same time, the three-phase magnetic circuit and magnetic flux are completely symmetric, and the work magnetic design is reasonable, so the noise of the products is greatly reduced.

4. Strong overload ability

(1) the product itself has low heat: the coil core transformer has a very small load loss and no-load current, and the product itself is low in heat.



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