EI-192 Silicon Steel Lamination Cores: High-Efficiency Transformer Solutions.
Precision EI-Core Laminations for Low-Loss Transformers
Engineered with grain-oriented silicon steel (CRGO), our EI-192 laminations minimize eddy current losses in 50/60Hz transformers, inductors, and SMPS. With core losses as low as 1.2 W/kg @1.5T/50Hz, these laminations enhance energy efficiency by up to 98% in industrial and renewable energy systems.
Key Features:
- Ultra-Thin Coating: 3–5μm C5 insulation layer (≥20 Ω·cm² surface resistivity)
- EI-192 Dimensions: 192mm leg length, 64mm window height (stacking factor ≥96%)
- RoHS Compliance: Chromium-free, environmentally safe insulation
Technical Specifications & Standards
EI-192 Core Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Thickness | 0.35mm / 0.50mm | ±0.02mm |
| Leg Width (E) | 64mm | ±0.15mm |
| Window Area (I) | 192mm × 64mm | ±0.3% |
| Core Weight | 1.2–18kg (per stack) | Customizable |
Material Properties:
- Silicon Content: 3.0–3.2%
- Core Loss (P1.5/50): 1.2–1.8 W/kg
- Permeability (B800): ≥1.82 Tesla
Performance Metrics & Applications
| Application | Recommended Grade | Core Loss | Key Benefit |
|---|---|---|---|
| Distribution Transformers | 0.35mm CRGO | ≤1.3 W/kg | Reduces no-load loss by 25% |
| Solar Inverters | 0.50mm CRGO | ≤1.6 W/kg | Handles 1.7T induction @10kHz |
| Industrial Chokes | 0.35mm CRGO | ≤1.5 W/kg | 96% stacking efficiency |
Why EI-192?
- Easy Assembly: Interlocking E+I design reduces air gaps
- Thermal Stability: Operates at ≤85°C under full load
Manufacturing & Quality Assurance
- Laser Cutting: ±0.1mm precision (EN ISO 9013)
- Stress Relief Annealing: 800°C in H₂/N₂ atmosphere
- Insulation Coating: C5/C6 coatings applied via roll coating
- Testing:
- Epstein Frame: IEC 60404-2 compliant
- Coating Adhesion: Cross-cut test (Grade 0 per ISO 2409)
Competitive Advantages
| Parameter | EI-192 CRGO | Industry Average |
|---|---|---|
| Core Loss | 1.2–1.8 W/kg | 1.5–2.2 W/kg |
| Lead Time | 10–18 days | 25–35 days |
| Customization | 10+ standard sizes | Limited to 5 sizes |
Why Choose Us?
- Free Samples: ≤5kg with CAD drawings
- Global Certifications: ISO 9001, ASTM A876, IEC 60404-8
- MOQ Flexibility: 100kg for trial orders
Packing And Delivery
