Distribution Transformer Models and Price Analysis
04-07 2025 | By:
Distribution transformers are critical components in power distribution systems, available in various models tailored to specific applications. Below is a technical overview of common models, their specifications, and pricing trends based on market data.
1. Common Models and Technical Specifications
Dry-Type Transformers (SCB Series)
SCB10: epoxy resin-insulated, suitable for fire-prone environments (e.g., high-rise buildings, substations). Features low losses and high mechanical strength
SGB10: non-encapsulated H-class insulation, operating temperature up to 120°C, ideal for harsh industrial conditions
Oil-Immersed Transformers (S11 Series)
S11-M: fully sealed design with cold-rolled silicon steel cores, capacities from 30kVA to 2500kVA. Energy-efficient and widely used in residential and commercial grids
S13/S15: advanced energy-saving models with lower no-load losses, commonly applied in smart grids
Specialized Transformers
Non-Granular Alloy (NGA) Transformers: ultra-low loss, used in high-efficiency power networks
Distribution Transformer Models and Price Analysis
Mine-Use Transformers: explosion-proof design, compliant with GB3309-89 standards
2. Price Range and Influencing Factors
Transformer prices vary significantly based on:
Model and Capacity:
Small dry-type transformers (e.g., SCB10-50kVA): ¥18,000–¥35,000
Medium oil-immersed units (e.g., S11-M-800kVA): ¥50,000–¥80,000
Large industrial models (e.g., 2500kVA): ¥150,000–¥300,000
Material Costs: Copper/aluminum wire and silicon steel prices directly impact production costs
Regional Demand: Urban areas with high power density command premium prices, while rural regions may see discounts due to bulk procurement
3. Market Trends and Recommendations
Energy Efficiency Drives Demand: Governments incentivize S13/S15 models to reduce carbon emissions, increasing their market share
Regional Pricing: Coastal cities (e.g., Shanghai, Guangzhou) report 10–15% higher prices than inland regions due to logistics costs
Procurement Tips:
Prioritize suppliers offering 1-year warranties and free installation support
4. Conclusion
Selecting the right transformer model requires balancing technical requirements, budget, and long-term operational costs. While dry-type models excel in safety, oil-immersed variants remain cost-effective for standard applications. Continuous monitoring of material prices and policy updates is essential for informed procurement decisions.
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