Unicore for Pole Mounted Transformers
Oct 15, 2025
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Unicore for Pole Mounted Transformers
GNEE designs and manufactures two popular types cores, one is Distributed gap wound core, the other is a Folded Octagonal Core or called Unicore. Both are for pole-mounted distribution transformers, ranging from 5KVA to 500KVA, single phase and three phase available
A pole-mounted transformer is a type of distribution transformer that is mounted on a utility pole. It is used to step down the voltage of electrical power from high voltage transmission lines to a lower voltage suitable for distribution to homes, businesses, and other end-users. The pole-mounted transformer typically consists of a transformer unit, which includes the core and windings, mounted on top of a pole. Pole-mounted transformers are commonly used in rural areas or areas with distributed electrical infrastructure.
These are several core types used in pole-mounted transformers, including:
Shell-type core: This type of core consists of two cylindrical or toroidal-shaped cores that surround the windings. It provides efficient magnetic coupling and allows for easy cooling.
Core-type core: This type of core has a rectangular or E-shaped core that encloses the windings. It is widely used in distribution transformers due to its compact size and high efficiency.
Toroidal core: This type of core is donut-shaped and provides excellent magnetic coupling, low no-load losses, and compact design. It is commonly used in single-phase pole-mounted transformers.
These are some of common core types used in pole-mounted transformers, but there maybe other variations depending on specific requirements and manufacturer preferences.
Unicore for Pole Mounted Transformers Feature
- Low losses-near raw material magnetic properties are retained
- Easy manufacturing-No tooling needed
- Flexible gap positions-Easy assembly
- Cores can be designed with or without annealing
- Cores can be operated at higher temperature because the cores are not resin bonded
Unicore specifications
| size ( d * D * B )(mm) |
Cross-sectional area(mm²) |
weight(g) |
volt-ampere characteristic(mV) (1A excitation current output) |
Magnetic circuit length(mm) |
| 184*226*60 | 1260 | 7096 | 7.6 | 643.7 |
| 52.5*90.5*64 | 1216 | 2388 | 27.2 | 224.5 |
| 57*89*58 | 928 | 1861 | 17.3 | 229.2 |
| 55*81*68 | 884 | 1651 | 29.3 | 213.5 |
| 59*89*53 | 795 | 1616 | 19.8 | 232.4 |
| 55*87*40 | 640 | 1248 | 19.8 | 222.9 |
| 60*88*40 | 560 | 1139 | 13.8 | 232.4 |
| 41*72*25 | 387.5 | 602 | 14.1 | 177.4 |
| 66*91*30 | 375 | 809 | 9.9 | 246.5 |
| 59*79*30 | 300 | 569 | 7.3 | 216.7 |
| 62*82*30 | 300 | 593 | 8.8 | 226.1 |
| 59*77*30 | 270 | 504 | 7.3 | 213.5 |
| 59*85*12 | 156 | 309 | 3.6 | 226.1 |
| 55*75*15 | 150 | 268 | 3.3 | 204.1 |
| 61*85*12 | 144 | 289 | 2.1 | 229.2 |
| 60*82*11 | 121 | 326 | 3.9 | 222.9 |
| 43*57*15 | 105 | 144 | 4.3 | 157.1 |
| 24*35*10 | 55 | 45 | 3.1 | 92.6 |
Note: Customised sizes available.
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GNEE EC
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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Why Choose GNEE EC?
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.
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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;
core Products are exported to more than 70 countries in the world;
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With 18 Years of industry experience, we focus on the research, development, and manufacturing of high-quality iron cores for electricity, industrial control, new energy, and automotive markets