High Qauloty Toroidal CRGO Core for Oil Immersed Distribution Transformer

Customization: Available
Application: High-voltage, Low-voltage, High-temperature
Material: CRGO

Product Description

Basic Specifications
Structure: Wound Core
Type: Wound Core
Usage: High Voltage Power Transmission, Insulation
Certification: CE, ISO9001
Color: Silver
Testing Voltage: 240V
No Load Loss: 37W
Transport Package: Carton/Wooden Pallet
Product Description & Technical Data
SIZE Customized
THICKNESS 0.23-0.35MM (CRGO) & 0.35-0.5MM (CRNGO)
MATERIAL B20P080, B23P080, B23P085, B23P090
FREQUENCY 50HZ-1000HZ
COATING T2 Inorganic (CRGO), T4 Semi-organic (CRNGO)
PROCESS Annealing & Without Annealing
APPLIANCE Control Transformer, Auto Transformer, Isolation Transformer, Power Transformer, Ballast, Reactor, Inductor, Inverter Power, Toroidal Transformer, Voltage Stabilizers.
Core Characteristics
  • Material Composition: Silicon content: 3% alloy (Si:11Fe formula)
  • Surface Treatment: Dual-layer insulation coating (T2 coating standard)
  • Precision Manufacturing: Cold Rolling thickness control under 0.35mm
  • Grain Alignment: 800°C-1200ºC hydrogen atmosphere annealing treatment
  • Coating: C6 insulation coating
Performance Advantages
Energy Efficiency
Reduces no-load losses by 30-45%; 98.5% lamination stacking accuracy.
Operational Benefits
Withstands temperatures from -60ºC to 180ºC; 20-year lifespan guarantee.
Customization
Laser cutting tolerance: ±0.1mm; available in coils or pre-cut laminations.
EI Parameters Table
Type a b c d e holes
EI- 282846817-
EI-353557.51019.5-
EI-4141681321-
EI-4848881624-
EI-6060101020304
EI-76.276.212.712.725.438.14
EI-9696161632484
EI-120120202040604
Product Presentation
Frequently Asked Questions
Q1: What are the energy-saving benefits of using these wound cores?
A: These cores reduce no-load losses by 30-45% compared to conventional silicon steel cores, significantly improving energy efficiency in transformers.
Q2: What temperature range can the cores operate in?
A: Our cores are designed to withstand extreme environments, operating reliably between -60ºC and 180ºC.
Q3: Are the core sizes and shapes customizable?
A: Yes, we provide fully customizable sizes. We offer various types including EI type, U type, F type, and ring (toroidal) types based on your specific requirements.
Q4: What is the standard lifespan of these products?
A: Our products come with a 20-year lifespan guarantee under IEC 60404 standard conditions.
Q5: What certifications do these cores hold?
A: The cores are compliant with ISO 9001:2015, CE, RoHS, and REACH standards, ensuring high quality and environmental safety.
Q6: What material grades are available?
A: We use high-quality CRGO and CRNGO materials including B20P080, B23P080, Z11, and others, with thicknesses ranging from 0.23mm to 0.5mm.

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