S Series 20kV Power Transformer
The S series 20kV oil-immersed transformer adopts an optimized magnetic circuit and heat-resistant insulation system, featuring low losses, low noise, and good short-circuit withstand performance, and can be flexibly matched with various medium-voltage connection schemes. It is widely used in urban and rural distribution networks, industrial parks, and various high-load operation scenarios
Product Introduction
Key Specifications
Voltage class
20kV on the high-voltage side, 0.4kV on the low-voltage side
Capacity Range
30kVA~3150kVA
Cooling Method
Oil-Immersed Self-Cooled (ONAN)
Vector group
Dyn11 or Yyn0
Applications
Distribution network upgrades
20kV medium-voltage system upgrades, focusing on wiring compatibility and low losses
Industrial parks
Medium-voltage consumer substations, emphasizing noise control and reliability
Regional power supply
Suburban areas with growing loads, with focus on long-term continuous operation
Product Overview
- Strong adaptability: high temperature resistance and high overload capacity enable long-term stable operation in harsh environments.
- Refined appearance: full grinding and derusting, powder coating, wide-panel radiators, and a durable finish that stays like new.
- Leak-free design: one-piece acrylate seals, verified by positive and negative pressure leak testing for reliable quality.
- Safe and eco-friendly: materials and processes meet safety and environmental standards, with low smoke, non-corrosive combustion, and environmental friendliness.
Product Features
Low-loss design
The S series features a new core and optimized winding structure design, reducing no-load losses by more than 20% and load losses by more than 10% compared with conventional transformers, greatly improving energy efficiency.
Low-noise operation
Premium silicon steel and optimized magnetic circuit design significantly reduce noise levels, meeting the environmental requirements of modern cities and residential areas.
High Reliability
The windings and active part are rigorously designed with strong short-circuit resistance. Premium insulation materials and high-temperature transformer oil ensure safe operation and extended service life.
Eco-friendly and energy-saving
Uses pollution-free, recyclable eco-friendly insulating oil. Product materials are recyclable, with excellent sealing performance—leak-free and maintenance-free.
Sealed and leak-proof
Optimized tank sealing structure withstands pressure and prevents leakage for long-term outdoor operation
Strong Short-Circuit Withstand Capability
Reinforced windings and optimized structure withstand short-circuit impacts for more stable operation
Standards and certifications
GB 1094
Power transformer
GB/T 10228
Technical parameters and requirements for power transformers
IEC 60354
Transformer Loading Guide
GB/T 25384
Minimum energy efficiency limits and energy efficiency grades for power transformers
ISO 14001
Environmental Management System Specification
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.
