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In-Depth Analysis of S20-2500KVA Oil-Immersed Transformer
In-Depth Analysis of S20-2500KVA Oil-Immersed Transformer
I. Basic Parameters and Technical Specifications
Parameter | Technical Specifications |
---|---|
Rated Capacity | 2500KVA |
Voltage Class | Standard configuration: 10kV/0.4kV; customizable for special voltage classes such as 35kV |
Cooling Method | Oil-immersed cooling, utilizing oil circulation for heat dissipation, with excellent heat dissipation and insulation performance |
Insulation Class | Class F insulation, ensuring stable operation under high-temperature conditions |
Short-Circuit Impedance | Options include 4.0, 4.5, 5.0, etc., to adapt to different system requirements |
Temperature Rise Limit | 60K, compliant with relevant standards |
Energy Efficiency Class | Compliant with GB 20052-2020 Class II energy efficiency standards, high efficiency, and low operating costs |
Protection Class | Typically IP20 or above, dustproof and splash-proof, suitable for outdoor environments |
II. Performance Characteristics
High Efficiency and Energy Savings
Utilizes high-quality silicon steel sheet cores and all-copper windings to effectively reduce no-load and load losses, compliant with national Class II energy efficiency standards.
Energy savings at 75% load rate can recoup additional investment costs within 3-5 years.Strong Environmental Adaptability
Oil-immersed design enables stable operation in harsh environments, such as high temperatures, humidity, and dusty outdoor conditions.
Protection class IP20 or above, customizable for higher protection classes to suit special environments.High Reliability
Simple and compact structure, easy maintenance, with high electrical and mechanical strength.
Adopts advanced insulation materials and manufacturing processes to ensure long-term stable operation.Cost-Effective
Lower manufacturing costs compared to dry-type transformers, offering high cost performance.
Simple maintenance; only the transformer top cover needs to be opened for internal inspection during maintenance, eliminating the need for complete disassembly.Intelligent Temperature Control
Equipped with temperature measurement and protection devices, automatically starting and stopping fans to ensure the transformer operates within a safe temperature range.
Features over-temperature warning and tripping functions to protect the transformer from damage.III. Application Scenarios
Power Systems
Used in power transmission and distribution, serving as a critical device in the power grid to ensure efficient power transmission and distribution.
Functions in voltage stepping up, stepping down, and transformation to meet different voltage class requirements.Industrial Sector
Widely applied in industries requiring substantial power supply, such as steel and petrochemicals.
Provides stable and reliable power for the power supply systems of large factories, mines, and other industrial enterprises.Commercial Facilities
Meets the power demands of shopping malls, office buildings, and other commercial facilities.
Supplies sufficient power for large venues, exhibition centers, and similar sites.Urban Infrastructure
Used in the power supply systems for urban road lighting, public transportation, and other urban infrastructure.
Acts as a hub device in urban power supply networks, supplying power to surrounding buildings and facilities.Renewable Energy Sector
Serves as a key device for energy conversion and distribution in renewable energy projects such as wind and solar power.
Enables efficient utilization and stable output of renewable energy.
IV. Structure and Materials
Component | Materials and Processes |
---|---|
Core | Adopts high-permeability, low-loss silicon steel sheet materials with a stepped multi-stage joint structure to reduce no-load losses and no-load currents |
Windings | High-voltage coils are multi-layer cylindrical; low-voltage coils are cylindrical or new spiral types, with interlayer insulation using adhesive-coated paper for good mechanical strength |
Insulation System | Mainly uses paper insulation materials with high electrical performance and heat resistance |
Oil Tank | Corrugated rectangular oil tank with automatically welded corrugated sheets and full, smooth welds to ensure no oil leakage. External fasteners are made of stainless steel for corrosion and rust prevention |
Cooling System | Oil-immersed cooling, dissipating heat through oil circulation |
V. Certifications and Standards
National Standards: Compliant with GB/T 1094.1-2013, GB/T 1094.2-2013, GB 20052-2020, and other standards to ensure product quality and performance.
International Certifications: Some products may pass international certifications such as CE and UL, suitable for export markets.
Safety Certifications: Passed relevant safety certifications, such as CNAS, to ensure product safety and reliability.VI. Suppliers and Pricing
Supplier | Price Range (RMB/Unit) | Product Highlights |
---|---|---|
Shandong Jiaxing Electric | Starting from 220,000 (minimum order of 2 units) | All-copper windings, Class II energy efficiency, oil-immersed cooling, suitable for multiple voltage classes |
Jiangsu Juli | 293,000 | Customizable services, high efficiency, strict quality control, suitable for power systems and industrial sectors |
Price Fluctuation Factors:
Customization Requirements (voltage class, protection class, intelligent functions)
Purchase Quantity (bulk purchase discounts)
Material Costs (fluctuations in copper and silicon steel sheet prices)
Additional Services (installation and commissioning, warranty period)VII. Maintenance and Care
Regular Inspections
Monthly checks on grounding resistance, lead terminal tightness, and insulation resistance.
Semi-annual dust cleaning and testing of temperature controllers and fans.Oil Level Checks
Maintain proper oil levels; regularly check for normal oil levels and promptly address any abnormalities.Overload Management
Avoid prolonged overload operation to prevent equipment damage or shortened service life.Environmental Control
Install transformers in dry, well-ventilated environments free from corrosive gases.
Maintain appropriate indoor temperature and humidity to prevent transformer overheating or moisture ingress.Fault Handling
Immediately shut down for inspection in case of abnormal temperature rise or increased noise.
Regularly conduct insulation resistance tests and partial discharge detection to ensure transformer safety.Conclusion:
The S20-2500KVA oil-immersed transformer, with its high efficiency, reliability, and strong adaptability, has become the preferred choice for large-scale power systems and industrial sectors. Users should consider load characteristics, environmental conditions, and energy efficiency requirements when selecting models, prioritizing suppliers with international certifications and focusing on total cost of ownership (TCO). Regular maintenance can extend the service life to over 30 years, ensuring long-term stable operation.
The main products include oil immersed transformers, dry-type transformers, power transformers, amorphous alloy transformers, mining transformers, box type substations, high and low voltage switchgear and supporting products
Add: South Head of Mount Huangshan Road, Liaocheng Development Zone, Shandong, China
Email:sdbyqcj@163.com
Tel: +86 13706354419