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Toroidal CRGO Silicon Steel Wound Core

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  1. High-Efficiency Magnetic Design: Epoxy-coated CRGO toroidal core with a closed magnetic path that minimizes leakage flux and no-load loss, ensuring quiet, high-efficiency power transformation.

  2. Versatile Thickness Range: Available in standard (0.23–0.35mm) and ultra-thin (0.05–0.15mm) silicon steel options to suit 50Hz transformers, current sensors, and high-frequency new energy inverters.

  3. Robust & Cost-Effective: Offers strong overload resistance, mechanical durability, and stable costs, making it the economical mainstream choice for large-scale industrial magnetic components.

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Description

PRODUCT DETAILS
Brand Shumyip
Manufacturer EI-Cores
Country Of Origin China
Product Type Silicon Steel Core
Design Toroidal
Application  High-power power distribution at utility frequency, new energy photovoltaic storage, smart grid upgrades, and precision medical equipment.
This toroidal core is tightly wound from high-grade Cold Rolled Grain Oriented (CRGO) silicon steel strip, fully coated with black epoxy resin for insulation, moisture resistance, mechanical protection and noise reduction. With seamless closed magnetic circuit design, it effectively minimizes air gap loss and magnetic leakage, delivering outstanding low no-load loss, high magnetic permeability, low vibration and quiet operation performance. We support customized outer diameter, inner diameter, height and silicon steel thickness to match various power design requirements.

Available Silicon Steel Thickness Options

We supply multiple standard strip thickness for different working frequency scenarios:

0.23mm, 0.27mm, 0.30mm, 0.35mm for 50Hz industrial frequency transformers & current transformers;

Ultra-thin 0.05mm, 0.08mm, 0.10mm, 0.15mm for medium & high frequency inductors, inverters and new energy equipment.

Key Advantages

  1. Closed-loop magnetic structure greatly reduces magnetic flux leakage, improves electromagnetic conversion efficiency
  2. Lower core loss, less heat generation and stable output under long-term continuous heavy load operation
  3. Low vibration & low operating noise, superior to traditional EI laminated silicon steel cores
  4. Strong anti-saturation property, excellent stability for large-current sampling & power transformation
  5. Epoxy coating prevents rust, insulation breakdown and layer separation during winding & installation

Wide Application Fields

  • High-power toroidal isolation transformers for medical equipment, industrial UPS, audio amplifiers
  • Busbar type current transformers, zero-sequence CT cores for power grid metering & leakage protection
  • Filter reactors, harmonic suppression inductors for photovoltaic inverters & EV charging piles
  • Auxiliary power transformers for rail transit, frequency converters, energy storage PCS systems
  • Custom special magnetic cores for industrial control, military power supply & precision testing instruments

Notes for Use

  1. Avoid violent impact or extrusion to prevent winding layer cracking and magnetic performance degradation
  2. Reasonably arrange winding turns evenly to avoid unbalanced magnetic flux and increased noise
  3. Do not run continuously beyond rated power to prevent overheating, insulation aging and demagnetization
  4. Reserve cooling space during installation; adopt sealed treatment for humid working environment
  5. Keep away from strong permanent magnets to avoid partial magnetization and measurement deviation

Market Prospect

CRGO toroidal cores remain the mainstream choice for medium & high-power industrial frequency magnetic components with mature processing technology and balanced cost-performance. Benefiting from global smart grid upgrading, new energy photovoltaic & energy storage industry expansion, demand for low-loss customized toroidal silicon steel cores keeps growing steadily. Compared with amorphous and nanocrystalline cores, our silicon steel toroidal cores feature stronger mechanical strength, better overload resistance and more competitive price for large-size power applications.

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Additional Info

Shipping policy

At our Company, we understand the importance of timely delivery. We offer a variety of shipping options to suit your needs, including standard, expedited, and express shipping. Our dedicated team works diligently to process and dispatch your orders promptly, aiming to deliver them to your doorstep within the estimated timeframe.

We strive to provide fast and reliable shipping to our customers. Here’s everything you need to know about our shipping process:

  • Dispatch: Within 24 Hours
  • Free shipping across all products on a minimum purchase of $99.
  • International delivery time 5 to 7 business days
  • Cash on delivery might be available
  • Easy 30 days returns and exchanges

Please note that delivery times are estimates and may vary depending on factors such as product availability, destination, and carrier delay

Returns policy

We want you to be completely satisfied with your purchase from our website. If for any reason you are not entirely happy with your order, we’re here to help. Certain exclusions and conditions may apply, so we encourage you to review our detailed return policy for more information. Rest assured, our goal is to ensure your complete satisfaction with every purchase you make from our website

  1. Returned items must be unused, undamaged, and in the same condition as received.
  2. Original tags, labels, and packaging must be intact and included with the returned item.
  3. Proof of purchase, such as your order confirmation or receipt, is required for all returns.

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