Industrial-Grade 3D Triangular Rolled Core Transformer from China Suppliers - Efficient Power Supply Solutions by Factory
S13 and S11 Product Specification
| Rated capacity KVA | Voltage combination and tap range | Connection group symbol | No-load loss | No-load current | Load loss | Short-circuit impedance % | |||
| High pressure KV | Tapping range of high voltage % | Low pressure KV | S13 | S11 | |||||
| 30 | 6 6.3 10 10.5 11 |
±5 | 0.4 | Dyn11 Yzn11 Yyn0 | 80 | 100 | 0.30 | 630/600 | 4.0 |
| 50 | 100 | 130 | 0.24 | 910/870 | |||||
| 63 | 110 | 150 | 0.23 | 1090/1040 | |||||
| 80 | 130 | 180 | 0.22 | 1310/1250 | |||||
| 100 | 150 | 200 | 0.21 | 1580/1500 | |||||
| 125 | 170 | 240 | 0.20 | 1890/1800 | |||||
| 160 | 200 | 280 | 0.19 | 2310/2200 | |||||
| 200 | 240 | 340 | 0.18 | 2730/2600 | |||||
| 250 | 290 | 400 | 0.17 | 3200/3050 | |||||
| 315 | 340 | 480 | 0.16 | 3830/3650 | |||||
| 400 | 410 | 570 | 0.16 | 4520/4300 | |||||
| 500 | 480 | 680 | 0.16 | 5410/5150 | |||||
| 630 | Dyn11 Yyn0 | 570 | 810 | 0.15 | 6200 | 4.5 | |||
| 800 | 700 | 980 | 0.15 | 7500 | |||||
| 1000 | 830 | 1150 | 0.14 | 10300 | |||||
| 1250 | 970 | 1360 | 0.13 | 12000 | |||||
| 16000 | 1170 | 1640 | 0.12 | 14500 | |||||
Detail Display
Applications of 3D Triangular Wound Core Transformer
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Power Distribution Networks
Integrated into urban and rural medium/low-voltage power grids, it efficiently steps down high-voltage electricity to usable levels for residential communities, ensuring stable power supply for households (lighting, appliances) with ultra-low energy loss.
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Industrial Facilities
Deployed in manufacturing workshops (machinery, electronics, textiles) and industrial parks, it provides reliable voltage regulation to support continuous operation of production equipment, minimizing power fluctuations that affect precision processes.
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Commercial Buildings
Used in shopping malls, office towers, and hotels to distribute power for HVAC systems, elevators, lighting, and commercial appliances, with its low-noise design suiting indoor public environments.
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Renewable Energy Systems
Paired with solar photovoltaic or small wind power plants, it converts unstable renewable energy output into grid-compatible electricity, facilitating smooth integration into the main power network.
Product Display
Advantages
1 Optimization of Magnetic Circuit
- There is no joint between the three dimensional volume of the core layer, uniform distribution of the magnetic circuit. There is no obvious high resistance area and no distortion of the magnetic flux density of the joint.
- The direction of the magnetic flux is completely consistent with the orientation of the silicon steel sheet.
- The length of the three-phase magnetic circuit is exactly the same, and the length of the three-phase magnetic circuit is the shortest.
- The three-phase magnetic circuit is completely symmetrical, and the three air current is completely balanced.
2 Low Loss & Remarkable Energy Savings
- The magnetization direction of three-dimensional rolled iron core is completely consistent with the direction of rolling silicon steel sheet, even magnetic flux distribution throughout the uniform, no high resistance region, no obvious distortion of the magnetic flux density of joints. While using same material, compared with laminated core, the wound core's iron loss can be reduced from 1.3–1.5 to 1.05. This feature can make the core loss reduce about 10–20%.
- Due to special three-dimensional structure, the materials used in iron core yoke can be 25% less than traditional laminated core; the weight of angle core accounts for about 6% of the total weight.
- Shearing of silicon steel sheet processing will lead to the deterioration of magnetic conductivity. Three-dimensional wound iron is annealing treated in high temperature (800°C) nitrogen vacuum, not only eliminating the core mechanical stress, but also refining the magnetic domain of silicon steel sheet, thus improving the secondary recrystallization of silicon steel sheet.
- Test reports show that the three dimensional transformer's no-load loss is 25–35% lower than the national standard; the maximum load current can be reduced by 92%.
3 Low Noise
- The magnetic expansion of the silicon steel sheet causes the vibration of the iron core, then the noise is produced.
- The electromagnetic attraction between the joint of the silicon steel sheet and the lamination is caused by leakage, which causes the core vibration and noise.
- The working magnetic density of the transformer is too high, close to or reaching saturation point; too large leakage results in noise.
- The three-dimensional wound iron core is made by dedicated uninterrupted, continuous tightly rolling silicon steel strip in the core winding machine. There are no seams, so it won't make noise like laminated cores. At the same time, the three-phase magnetic circuit and the magnetic flux are completely symmetrical, the working magnetic density design is reasonable, therefore the product noise is greatly reduced.
4 High Overload Ability
- The product itself has very low heat: the winding core transformer's no-load loss and no-load current are both very small, so the product itself generates very little heat.
- Three-phase coil is like three chimney delta shaped, so an airway chimney is formed in the coil. The core yoke has a temperature difference of 30–40℃, which causes strong cross-ventilation. Cold air goes up to the warm side, and the heat is radiated from the inner bevel of upper yoke.
5 Compact Structure & Small Footprint
- The special-designed three-dimensional core makes compact structure products with reasonable layout. The transformer body occupied space is 10–15% less than traditional products, and body height is reduced by 10–20%. If installed in a substation box, the substation box can be reduced by nearly 1/4.
6 Anti-Theft Design
- The copper coil is wound directly onto the iron core. The copper coil is difficult to remove without large professional equipment, providing effective anti-theft protection.
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Frequently Asked Questions
What is the difference between S13 and S11 transformers?
The S13 transformer features significantly lower no-load losses compared to the S11 model. For example, at 30 KVA rated capacity, the S13 no-load loss is 80W while the S11 is 100W. The S13 series represents a more energy-efficient upgrade, offering better long-term energy savings and reduced operating costs.
What makes the 3D triangular wound core transformer more efficient than traditional laminated core transformers?
The 3D triangular wound core has no joints between core layers, resulting in uniform magnetic flux distribution with no high-resistance areas. The magnetization direction is fully aligned with the silicon steel sheet orientation, reducing iron loss by 10–20% compared to laminated cores. No-load loss is 25–35% lower than national standards, and no-load current can be reduced by up to 92%.
What voltage combinations are available for these transformers?
The transformers support high voltage options of 6 kV, 6.3 kV, 10 kV, 10.5 kV, and 11 kV, with a tapping range of ±5%. The low voltage output is 0.4 kV. Connection group symbols include Dyn11, Yzn11, and Yyn0 depending on the rated capacity.
In which industries or environments can this transformer be used?
The 3D triangular wound core transformer is suitable for a wide range of applications including urban and rural power distribution networks, industrial manufacturing facilities, commercial buildings (shopping malls, hotels, office towers), and renewable energy systems such as solar PV and wind power plants.
Why does the 3D wound core transformer produce less noise than conventional transformers?
Unlike laminated core transformers, the 3D wound core is made from continuously rolled silicon steel strip with no seams. This eliminates noise caused by electromagnetic attraction at lamination joints. Additionally, the fully symmetrical three-phase magnetic circuit and reasonable working magnetic density design significantly reduce vibration and operational noise, making it ideal for noise-sensitive environments.
What rated capacities are available, and what is the short-circuit impedance?
The transformers are available in rated capacities ranging from 30 KVA to 1600 KVA. For capacities from 30 KVA to 500 KVA, the short-circuit impedance is 4.0%. For larger capacities from 630 KVA to 1600 KVA, the short-circuit impedance is 4.5%.