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S22 oil immersed transformer
S22 oil immersed transformer
S22 oil immersed transformer
  • S22 oil immersed transformer
  • S22 oil immersed transformer
  • S22 oil immersed transformer

S22 oil immersed transformer

Product Details:

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.


Product Introduction

  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applied in power, construction, industrial manufacturing, and other fields, making it an ideal choice for replacing outdated, high-energy-consuming transformers.

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  2. Technical Features and Performance Parameters


Parameter CategoryTypical Values/RangeDescription
Rated Capacity30KVA–5000KVACovers small to large power distribution needs (e.g., S22-630KVA, S22-2500KVA models).
Voltage ClassHigh voltage side: 10kV; Low voltage side: 0.4kVStandard power system configuration, supports customized voltage combinations.
Energy Efficiency GradeNational Grade 1/2No-load losses reduced by 20% compared to NX3 transformers; load losses reduced by 30% compared to Grade 3 energy efficiency transformers.
Connection GroupDyn11/Yyn0Ensures voltage stability and reliable operation.
Short-Circuit Impedance4%–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 MethodOil-immersed natural cooling/forced air coolingInsulating 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 DimensionS22 Oil-Immersed TransformerDry-Type Transformer
CostLower procurement cost, simple maintenanceHigher procurement cost, requires regular dust cleaning
Capacity and VoltageSupports large capacities (>5000KVA), full voltage class rangeCapacity generally ≤1600KVA, limited voltage class options
Heat Dissipation and InsulationInsulating oil circulation for heat dissipation, excellent insulation performanceSelf-cooling or forced air cooling, insulation materials prone to aging
Suitable ApplicationsOutdoor/independent substation sites, humid environment-friendlyIndoor/fire safety-critical sites, such as high-rise buildings
Environmental FriendlinessEco-friendly insulating oil, biodegradableOil-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.

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