CRGO Silicone Steel Toroidal Core for Power Transformer
This high-performance CRGO (Cold Rolled Grain Oriented) silicone steel toroidal core is specifically engineered for power transformer applications. Made from premium-grade electrical steel with superior magnetic properties, it offers exceptional energy efficiency and minimal core losses. The toroidal shape ensures uniform magnetic flux distribution and reduced electromagnetic interference, making it ideal for high-frequency power conversion systems. With excellent magnetic permeability and low eddy current losses, this core delivers outstanding performance in both small and medium-sized transformers. Its compact design helps minimize the overall transformer size while maintaining optimal power density. Perfect for use in switch-mode power supplies, isolation transformers, and various industrial power applications where reliability and efficiency are paramount.
- Overview
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Material |
High quality CRGO steel with low iron-loss and high permeability |
Features |
Lower core loss, no
leakage magnetic flux,
excellent DC bias
characteristics, high
magnetic permeability
range from 250 to 1200.
|
Applications |
50Hz and 400Hz transformers.current transformers.chokes and other magnetic
components of
electronic equipments.
|
Manufacturing Process





Model |
Core Size (MM) |
Finished Size (MM) |
Cross Area (cm2) |
Average Path Length(CM) |
One-turn Loop Independence AL(μH) 1Khz,0.25V |
||||||||
OD |
ID |
H |
OD |
ID |
H |
Ae |
Lm |
AL(min) |
|||||
EK0603 |
6.0 |
3.0 |
3.2 |
6.5 |
2.5 |
3.8 |
0.037 |
1.41 |
13.0 |
||||
EK0903 |
9.0 |
5.0 |
3.2 |
9.5 |
4.5 |
3.8 |
0.050 |
2.20 |
11.5 |
||||
EK1003 |
10.0 |
7.0 |
3.2 |
10.5 |
6.5 |
3.8 |
0.037 |
2.67 |
7.0 |
||||
EK1210 |
12.0 |
8.7 |
10.0 |
12.6 |
8.1 |
10.6 |
0.129 |
3.25 |
20.0 |
||||
EK1405 |
14.0 |
9.0 |
4.5 |
14.5 |
8.5 |
5.1 |
0.088 |
3.61 |
12.0 |
||||
EK2108 |
21.3 |
13.5 |
8.0 |
22.1 |
12.8 |
9.0 |
0.243 |
5.46 |
22.0 |
||||
EK4304 |
43.0 |
35.0 |
4.0 |
43.6 |
34.4 |
4.6 |
0.125 |
12.25 |
5.0 |
Two series of toroidal core
B series core commonly used as a replacement of EI and other toroidal transformers with lower magnetic loss requirement.
Material thickness: 0.30mm, 0.27mm, 0.23mm
M3-0.23mm
|
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Toroidal Core Custom Form |
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OD(MM) |
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ID(MM) |
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H(MM) |
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Specified Material |
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Performance Requirement |
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Other requirement |







