Distribution Transformer Core Wound Transformer Core
Oct 23, 2025
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A wound transformer core for a distribution transformer is a magnetic core made by spirally winding a flat strip of grain-oriented electrical steel into a circular, cylindrical, or other shape. This design, also known as a wrapped or shell-type core, is highly efficient, reduces assembly time, and lowers costs compared to traditional stacked cores, making it ideal for distribution applications.
Wound Transformer Core Advantages
High efficiency:
Wound cores are often more energy-efficient than stacked cores, resulting in lower transformer losses.
Reduced assembly time and cost:
This design uses fewer components and simplifies the assembly process, which lowers manufacturing costs.
Lower magnetic stray fields:
Some designs, like those with a triangular or distributed-gap core, can reduce the effects of magnetic stray fields.
Improved harmonic performance:
Certain wound core configurations, such as triangular cores, can lead to a reduction in the third harmonic.
Types of wound cores
Conventional wound core: The traditional spiral wound design.
- Distributed gap wound core: A variation often used in high-power distribution transformers where windings are distributed with gaps to reduce losses.
- Triangular wound core: A more advanced design that can offer even lower no-load losses and improved harmonic behavior compared to stacked cores.
wound core specification
|
Product name |
Distribution Transformer Core |
|
Input Voltage |
3kV, 6kV, 10kV, 35kV, 69kV, 110kV, 115kV, 132kV, 220kV, 400kV |
|
Output Voltage |
110V, 220V, 380V, 440V, 480V |
|
Core material |
CRGO Silicon Steel Core, Amorphous |
|
Capacity |
10KVA,15KVA,25KVA,37.5KVA,50KVA,75KVA,100KVA,125KVA,150KVA |
|
Frequency |
50Hz/60Hz |
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Manufacturing Process
1. Raw Material Sourcing
2. Slitting
3. Punching
4. Laminating
5. Core Forming
6. testing
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Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.
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GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
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Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
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Over 1000 customers in domestic and overseas markets;
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