Distribution Transformer Cores Gap Transformer Core
Oct 23, 2025
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A distribution transformer's core is made of a wound steel core with a "distributed gap," meaning small, air gaps are spread throughout the core, not concentrated in one place. This design is popular for distribution transformers because it prevents magnetic saturation, reduces losses, and lowers manufacturing costs through a simpler assembly process and fewer components. This leads to quieter, more efficient transformers that are smaller and lighter.
Key features of a distributed gap core
Prevents magnetic saturation:
The gaps increase the core's reluctance, allowing it to handle higher currents without saturating, which prevents overheating and performance loss.
Reduces core losses:
By spreading the gaps, the core maintains good magnetic performance while minimizing energy loss, especially at high frequencies.
Simplifies manufacturing:
The distributed gap wound core can be made with a simple clamping structure, significantly reducing assembly time and costs compared to stacked cores.
Improves performance:
This design results in a more compact and lighter transformer with quieter operation due to minimized vibration and noise.
Where it's used
- Pole-mounted distribution transformers: Common in single-phase and three-phase distribution transformers.
- High-frequency applications: Used in power electronics, renewable energy systems, and telecommunications where performance at high frequencies is critical.
Gap Transformer 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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