Distribution Gap Core for Pad Mount Transformer Oil Type Transformer
Oct 23, 2025
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A distribution gap core (DG core) for a pad-mount transformer is typically a wrapped core design made of grain-oriented silicon steel that is widely used for its cost-effectiveness and efficiency in power distribution. This design uses a simple clamping method, resulting in faster manufacturing times and lower costs, and is engineered for applications like residential power distribution. It is known for having a high efficiency and a reliable service life.

distribution gap core Key features and benefits
Design:
The core is often a simple, wrapped design, sometimes referred to as a "distributed gap core". It is commonly a rectangular, five-leg core with a wrapped (toroidal) design.
Material:
It is constructed from grain-oriented silicon steel, which has excellent magnetic properties for reducing core losses and increasing efficiency.
Manufacturing:
The design facilitates faster assembly times and lower manufacturing costs compared to other core designs due to its simple clamp design.
Performance:
The design is known for high efficiency, with the grain-oriented steel minimizing hysteresis and eddy current losses.
Cost:
It is considered the most cost-effective choice for pad-mount transformers in distribution applications.
Application:
It is the standard choice for single-phase and three-phase distribution transformers that are part of a utility network connecting to end-users via underground lines.
DG core specification
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Product name |
Distribution Transformer Core |
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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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