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The S22 oil-immersed transformer is an upgraded, high-efficiency, energy-saving power transformer based on the S11 series, compliant with China's national Grade 1 or Grade 2 energy efficiency standards.
In-Depth Analysis of S22 Oil-Immersed Transformer
1. Product Overview
The S22 oil-immersed transformer is an upgraded, high-efficiency, energy-saving power transformer based on the S11 series, compliant with China's national Grade 1 or Grade 2 energy efficiency standards. Its core advantages lie in optimized electromagnetic design and the use of all-copper windings and high-quality iron cores, significantly reducing no-load and load losses while enhancing operational efficiency. This transformer model is widely applied in power, construction, industrial manufacturing, and other fields, making it an ideal choice for replacing outdated, high-energy-consuming transformers.
2. Technical Features and Performance Parameters
Parameter Category | Typical Values/Range | Description |
---|---|---|
Rated Capacity | 30KVA–5000KVA | Covers small to large power distribution needs (e.g., S22-630KVA, S22-2500KVA models). |
Voltage Class | High voltage side: 10kV; Low voltage side: 0.4kV | Standard power system configuration, supports customized voltage combinations. |
Energy Efficiency Grade | National Grade 1/2 | No-load losses reduced by 20% compared to NX3 transformers; load losses reduced by 30% compared to Grade 3 energy efficiency transformers. |
Connection Group | Dyn11/Yyn0 | Ensures voltage stability and reliable operation. |
Short-Circuit Impedance | 4%–6.5% | Enhances short-circuit withstand capability, ensuring equipment safety. |
Noise Level | <50dB (10dB lower than national standard) | Optimized iron core and winding structures reduce noise pollution. |
Cooling Method | Oil-immersed natural cooling/forced air cooling | Insulating oil circulation for heat dissipation, suitable for high-temperature environments. |
3. Core Advantages
High Efficiency and Energy Savings
Adopts amorphous alloy iron cores or high-permeability silicon steel sheets, reducing no-load losses by 20%–30% and load losses by 15%–25%.
Grade 1 energy efficiency models offer significant annual energy cost savings and a short payback period.Stable and Reliable
All-copper windings provide excellent conductivity, strong overload capacity, and improved short-circuit resistance.
A robust cooling system (corrugated tank or plate-type radiators) ensures long-term stable operation.Environmentally Friendly and Safe
Insulating oil uses eco-friendly β-oil, which is non-toxic, harmless, and biodegradable.
A sealed structure prevents oil leakage, meeting environmental requirements.Cost-Effective
Lower procurement costs compared to dry-type transformers, with simple maintenance (regular oil changes and filtration).
Low lifecycle costs and significant long-term operational economy.4. Application Scenarios
Industrial Sector
Heavy-Load Industries: Metallurgy, petrochemicals, mining, etc., requiring high-power, stable power supply.
Selection Recommendations: Choose capacity based on load fluctuations, reserve redundancy, and prioritize temperature control protection devices.Commercial and Public Facilities
Large Buildings: Shopping malls, hospitals, hotels, etc., with high power quality requirements.
Selection Recommendations: Focus on noise levels (<50dB) and short-circuit impedance to ensure environmental comfort.Infrastructure
Power Plants/Substations: Serves as the core distribution equipment, improving system efficiency.
Selection Recommendations: Select high-voltage models and support customized designs.Special Environments
Outdoor/Humid Areas: High insulation oil protection grade, adaptable to harsh climates.
Selection Recommendations: Configure moisture-proof and anti-corrosion coatings to enhance environmental adaptability.5. Comparison with Dry-Type Transformers
Comparison Dimension | S22 Oil-Immersed Transformer | Dry-Type Transformer |
---|---|---|
Cost | Lower procurement cost, simple maintenance | Higher procurement cost, requires regular dust cleaning |
Capacity and Voltage | Supports large capacities (>5000KVA), full voltage class range | Capacity generally ≤1600KVA, limited voltage class options |
Heat Dissipation and Insulation | Insulating oil circulation for heat dissipation, excellent insulation performance | Self-cooling or forced air cooling, insulation materials prone to aging |
Suitable Applications | Outdoor/independent substation sites, humid environment-friendly | Indoor/fire safety-critical sites, such as high-rise buildings |
Environmental Friendliness | Eco-friendly insulating oil, biodegradable | Oil-free design, but material recycling is challenging |
6. Selection and Maintenance Recommendations
Selection Key Points
Capacity Matching: Select capacity based on load requirements, reserve 20% redundancy.
Energy Efficiency Grade: Prioritize Grade 1 energy efficiency models to reduce long-term operational costs.
Environmental Adaptability: Consider usage scenarios (indoor/outdoor, temperature, humidity) when selecting protection grades.Maintenance Practices
Regular Inspections: Check insulating oil level, quality, and external leakage every 6 months.
Cleaning and Maintenance: Clean radiator dust annually to maintain good heat dissipation.
Preventive Testing: Conduct insulation resistance tests, withstand voltage tests, etc., every 2–3 years to ensure stable performance.Summary: The S22 oil-immersed transformer excels in high efficiency, energy savings, stability, reliability, cost-effectiveness, and environmental friendliness, making it suitable for industrial, commercial, and infrastructure applications. When selecting, consider load requirements, environmental conditions, and budget. Prioritize Grade 1 energy efficiency products and pay attention to the manufacturer's after-sales service capabilities. Regular maintenance can extend equipment life and ensure 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