SG(B) Series Non-Encapsulated Dry-Type Transformer
It is a high-performance, highly reliable power transformer built with premium high-permeability grain-oriented silicon steel sheets, featuring excellent insulation performance, low losses, and low noise. Rigorously tested for quality and compliant with national standards, it is widely suitable for industrial and commercial applications, providing customers with safe, eco-friendly, and efficient power supply solutions.
Product Introduction
Key Specifications
Capacity Range
50 kVA - 2500 kVA
Voltage class
6 kV、10 kV、35 kV
Frequency
50 Hz or 60 Hz
Insulation Class
Class F or Class H
Cooling Method
Natural air cooling (AN), forced air cooling (AF)
Connection method
Dyn11 or Yyn0
Applications
Crowded areas
Large commercial complexes and public buildings with stringent fire protection requirements
Underground spaces
Underground/semi-underground distribution stations, focusing on heat dissipation and safety redundancy
High-reliability power distribution
Continuous operation for critical loads, emphasizing thermal stability and short-circuit resistance
Product Overview
- 1. The product is Class H with Class C insulation materials, offering strong overload capability, strong short-circuit resistance, and high safety performance.
- 2. Premium high-permeability silicon steel with multi-step lamination process for low no-load loss.
- 3. Copper and silicon steel are recyclable and insulation materials are fully degradable, making an environmentally friendly product.
- 4. Adopts DuPont ReliatraN@ core technology, reducing volume by 10% and material usage by 10%.
- 5. Fully intelligent data acquisition and analysis with a smart 'brain' for proactive O&M.
Product Features
Advanced design technology
Using "3D + parametric" design software combined with more than 20 years of group design and manufacturing experience, transformer design is automated, cost-optimized, and simulation-verified, ensuring advanced and reliable product design.
High Reliability of the High-Voltage Winding
The high-voltage coil adopts a continuous structure with high mechanical strength and good heat dissipation, avoiding the heat dissipation and voltage distribution problems of conventional multi-layer coils and ensuring higher mechanical strength and reliability. Partial discharge is below 5 pC, guaranteeing long-term stable product operation.
Strong Impact Resistance of the Low Voltage Winding
The low-voltage coil adopts a foil or longitudinal-duct high-current spiral structure, a nationally patented design, and is treated with vacuum pressure impregnation (VPI), providing extremely high short-circuit and surge resistance along with moisture-proof, dust-proof, and salt-fog-resistant properties to adapt to a variety of complex environments.
High-Efficiency Core Design
The core is made of premium high-permeability grain-oriented silicon steel with a 45° fully mitered step-lap lamination process and a special moisture- and rust-resistant coating, significantly reducing no-load loss, no-load current, and operating noise while improving overall operating efficiency.
Strict quality inspection
Before leaving the factory, every transformer must pass rigorous tests compliant with the national standards GB6450-1986 and JB/T501-XXXX, covering multiple key items such as partial discharge, lightning impulse, and noise, which guarantees the product's high quality and high reliability.
Superior heat dissipation
Open air duct + natural/forced air cooling for better temperature rise control and stronger overload adaptability
Standards and certifications
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
Integrates electromagnetic optimization design, parametric drawing, performance analysis, structural optimization, and automatic drawing output for transformers, enabling shared transformer design resources and search, modification, and version control of all kinds of data.
Simulation Analysis
Flow field, temperature field, electric field, leakage magnetic field, wave process, and short-circuit force. The R&D and design of every product series are verified through flow field and temperature field simulation analysis to determine the winding average temperature rise and hot-spot temperature, ensuring product performance.
Smart O&M platform
By collecting key data such as transformer temperature, current, voltage, vibration, and grid harmonics, it enables online power quality analysis and fault alarms, and can be installed on mobile phones.
