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CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer - H-Class Insulation with DuPont Nomex Paper
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Home  >  Products  >  Dry-Type Transformer  >  CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer
SG(B) Series Non-Encapsulated Dry-Type Transformer
The SG(B) Series Non-Encapsulated Dry-Type Transformer is a high-performance and highly reliable power transformer. It is manufactured with high-quality, grain-oriented silicon steel, offering excellent insulation performance, low losses, and low noise operation. Tested under strict quality control procedures and compliant with national standards, it is widely used in industrial and commercial applications, providing a safe, environmentally friendly, and efficient power supply solution.
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CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer - H-Class Insulation with DuPont Nomex Paper
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer - H-Class Insulation with DuPont Nomex Paper
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer - H-Class Insulation with DuPont Nomex Paper
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer - H-Class Insulation with DuPont Nomex Paper
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer - H-Class Insulation with DuPont Nomex Paper
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer - H-Class Insulation with DuPont Nomex Paper
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Scope of application
High-Density Occupancy Areas
Suitable for large commercial complexes and public buildings with strict fire safety requirements.
High-Density Occupancy Areas
Underground Spaces
Ideal for underground or semi-underground substations, with a focus on efficient heat dissipation and enhanced safety redundancy.
Underground Spaces
High-Reliability Power Distribution
Suitable for critical load applications requiring continuous operation, with strong thermal stability and short-circuit withstand capability.
High-Reliability Power Distribution
Product Description
Product Description
1 Class H insulation with Class C insulating materials, offering strong overload capacity, excellent short-circuit withstand capability, and high operational safety.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer
2 Manufactured with high-quality, high-permeability silicon steel and multi-step lap core technology, ensuring low no-load loss.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer
3 Copper and silicon steel are recyclable, and the insulation materials are fully degradable, making it an environmentally friendly product.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer
4 Incorporates DuPont™ ReliatraN® core technology, reducing overall size and material usage by approximately 10%.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer
5 Enables fully intelligent data acquisition and analysis, acting as a smart “brain” for proactive operation and maintenance.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer
Product Features
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer

Advanced Design Technology

  • 3D Parametric Design: Utilizes advanced software for automated and precise engineering.
  • 20+ Years Experience: Proven track record backed by 20+ years of manufacturing expertise.
  • Cost Optimization: Leverages digital tools to achieve maximum cost and material efficiency.
  • Simulation Analysis: Conducts rigorous software simulation for advanced and reliable performance.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer

High Reliability of HV Windings

  • Continuous Structure: Optimizes heat dissipation and eliminates traditional multilayer issues.
  • High Mechanical Strength: Provides superior structural integrity to withstand severe operational stress.
  • < 5 pC Partial Discharge: Guarantees ultra-low discharge levels for long-term stable operation.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer

Strong Impact Resistance of LV Windings

  • Patented Structure: Adopts foil-type or helical structures for superior large-current capability.
  • VPI Treatment: Treated with Vacuum Pressure Impregnation for excellent short-circuit resistance.
  • 3-Proof Protection: Delivers robust defense against moisture, dust, and salt spray.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer

High-Efficiency Core Design

  • Premium Silicon Steel: Made of high-quality, grain-oriented silicon steel with moisture and corrosion coatings.
  • Step-Lap Structure: Utilizes a 45° step-lap joint structure to significantly reduce operating noise.
  • High Efficiency: Engineered to minimize no-load loss and current for improved overall efficiency.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer

Strict Quality Testing

  • Standard Compliance: Fully tested in strict accordance with national GB6450-1986 and JB/T standards.
  • Comprehensive Testing: Includes rigorous partial discharge, lightning impulse, and comprehensive noise tests.
  • Guaranteed Reliability: Ensures every delivered unit meets the highest quality and reliability levels.
CEEG SG(B) Series Non-Encapsulated Dry-Type Transformer

Enhanced Cooling Performance

  • Open Ventilation Duct: Features an advanced open-duct design for superior natural heat dissipation.
  • AN/AF Cooling Options: Combines natural (AN) and forced air (AF) to precisely control temperature rise.
  • Enhanced Overload: Boosts thermal efficiency to significantly improve transformer overload capability.
Main Parameters
Capacity Range 50 kVA - 2500 kVA
Rated Voltage 6 kV、10 kV、35 kV
Frequency 50 Hz / 60 Hz
Insulation Class Class F or Class H
Cooling Method Natural Air Cooling (AN) / Forced Air Cooling (AF)
Vector Group Dyn11 or Yyn0
Implementation Standard
Implementation Standard
GB 6450-1986 Technical Requirements and Test Methods for Dry-Type Power Transformers
IEC 60076-11 International Standards for Dry-Type Transformers
Technical Advantages
R&D Cloud Platform
R&D Cloud Platform
An integrated platform combining electromagnetic optimization design, parametric modeling, performance analysis, structural optimization, and automatic drawing generation. It enables efficient design resource sharing, as well as data management including search, modification, and version control.
Simulation Analysis
Simulation Analysis
Advanced simulation capabilities covering fluid flow, thermal field, electric field, leakage magnetic field, transient processes, and short-circuit forces. Each product series is optimized through thermal and flow analysis to accurately determine winding temperature rise and hotspot distribution, ensuring reliable and stable performance.
Smart Operation & Maintenance Platform
Smart Operation & Maintenance Platform
By collecting key data such as temperature, current, voltage, vibration, and grid harmonics, the system enables real-time power quality analysis and fault alarms. It also supports mobile access for remote monitoring and intelligent operation management.
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