Customized CRGO Low Loss Silicon Steel Assembled Power Transformer Iron Core
Sep 28, 2025
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CRGO Silicon Steel Transformer Iron Core Product Description
CRGO electrical steel is a specialized type of silicon steel that has been cold-rolled and grain-oriented to maximize its magnetic properties. The "grain-oriented" aspect means the steel's crystals are aligned in a specific direction, which increases its magnetic permeability and reduces energy losses when the steel is used in transformer cores. This makes CRGO electrical steel the preferred choice for high-performance, energy-efficient transformers.
Silicon Steel vs CRGO Electrical Steel
While both silicon steel and CRGO electrical steel are used in the manufacture of transformer cores, there are several key differences between these two materials.
1. Magnetic Properties
The primary difference between silicon steel and CRGO electrical steel lies in their magnetic properties. CRGO steel has superior magnetic properties due to its grain-oriented structure. This structure enhances the material's ability to conduct magnetic flux, resulting in lower core losses when the transformer is in operation. As a result, CRGO electrical steel is ideal for high-efficiency transformers used in power generation, transmission, and distribution.
Silicon steel, on the other hand, lacks the grain-oriented structure and, therefore, has lower magnetic permeability and higher energy losses than CRGO steel. While it is still used in transformers, it is more suitable for lower-frequency applications and transformers that do not require the same level of efficiency as those made from CRGO electrical steel.
2. Core Losses and Efficiency
One of the most significant advantages of CRGO electrical steel is its ability to reduce core losses in transformers. Core losses, also known as iron losses, are a result of the continuous magnetization and demagnetization of the transformer core as alternating current (AC) flows through it. CRGO electrical steel's superior grain-oriented structure significantly reduces these losses, which results in transformers that are more energy-efficient.
While silicon steel does reduce core losses compared to traditional materials, it does not offer the same level of efficiency as CRGO electrical steel. Transformers made with silicon steel tend to have higher core losses, which can lead to reduced overall efficiency, especially in large-scale or high-performance transformers.
3. Cost and Availability
Another notable difference between silicon steel and CRGO electrical steel is the cost and availability. Silicon steel is generally less expensive to manufacture and more readily available, making it a cost-effective choice for transformers used in less critical applications or where efficiency is not the primary concern.
CRGO electrical steel, due to its grain-oriented structure and superior magnetic properties, is more expensive to produce. However, its enhanced efficiency justifies the higher cost, particularly for transformers used in power grids, renewable energy systems, and other high-performance applications where minimizing energy losses is essential. In many cases, the long-term cost savings from reduced energy consumption outweigh the initial cost of CRGO-based transformers.
CRGO electrical steel Application
- Power Transformers (50Hz/60Hz):
Distribution transformers (10kVA–10MVA)
Large power transformers (LPTs) (10MVA+)
- Special Transformers:
Instrument transformers (CTs, PTs)
High-frequency transformers (HFTs)
- Industrial & Renewable Energy:
Solar/wind power converters
Railway traction transformers
Transformer Iron Core specifications
Top-Tier Quality & Fully Assembled Cores
- Maximum Weight of Automatic Stacked Core: 60 Tons
- Maximum Weight of Manually Stacked Core: 120 Tons
- Gap Limit at the Joint: Less than 1.0mm
- Window Height Precision: ±1mm for Impeccable Fit
- Window Width Precision: ±1mm for Perfect Alignment
| Type | Grade | Width | Max Core Loss@P1.7T/50Hz | Lamination Factor(%) | Min Induction@B800 |
| Common Type | 23Q110 | 35-1200mm | 1.10w/kg | 97.2 | 1.82T |
| 23Q120 | 1.20w/kg | 97.2 | 1.82T | ||
| 27Q120 | 1.20w/kg | 97.5 | 1.82T | ||
| 30G120 | 1.20w/kg | 98 | 1.82T | ||
| High Induction Type |
B20P085 | 35-1200mm | 0.85w/kg | 97 | 1.86T |
| B23P085 | 0.85w/kg | 97.2 | 1.88T | ||
| B23P090 | 0.90w/kg | 97.2 | 1.88T | ||
| B23P095 | 0.95w/kg | 97.2 | 1.88T | ||
| B23P100 | 1.00w/kg | 97.2 | 1.88T | ||
| B27P095 | 0.95w/kg | 97.5 | 1.89T | ||
| 27QG100 | 1.00w/kg | 97.5 | 1.89T | ||
| B30P120 | 1.20w/kg | 98 | 1.89T | ||
| Domain Refined High Induction Type(Laser) |
B20R070 | 35-1200mm | 0.70w/kg | 97 | 1.86T |
| B23R085 | 0.85w/kg | 97.2 | 1.88T | ||
| B27RK085 | 0.85w/kg | 97.5 | 1.89T |
GNEE Featured Products
Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process
1. Raw Material Sourcing
2. Slitting
3. Punching
4. Laminating
5. Core Forming
6. testing
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.
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;
core Products are exported to more than 70 countries in the world;
Gnee Iron Core Factory Overview
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Edison Zhang
CEO
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Industries Served
Automobile Industry
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Transformer Applications
Our Mission
Strive To Create world-class Iron core brand
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