Outdoor Electric Power Transformer 20kV 30kVA 50kVA

As a leading professional manufacturer of electrical equipment in China, Jinhand Electrical’s S13/S22-M Outdoor Electric Power Transformer 20kV 30kVA 50kVA is a customized outdoor power distribution core equipment developed for the pain points of traditional outdoor transformers such as poor environmental adaptability, high maintenance costs, and high energy consumption. Adopting advanced electromagnetic design, high-quality material selection, and full-sealed structural optimization, this transformer is tailored for 50Hz outdoor industrial power systems, supporting 6/6.3/6.6/10/10.5/11kV high-voltage input and a fixed 0.4kV low-voltage output, compatible with Yyn0 and Dyn11 dual connection groups.

MAIN TECHNICAL PARAMETERS

Core Selling Points

1.Fully Sealed Maintenance-Free Design:Equipped with 30-year service life sealed components, the fully sealed structure isolates internal oil and components from air, eliminating the need for regular oil changes. Only oil sample testing every 5-8 years is required, reducing maintenance work by 90% compared to traditional oil-immersed transformers—ideal for unmanned outdoor power distribution stations.
2.Ultra-High Energy Efficiency & Low Loss:Compliant with national Grade 1 energy efficiency standards and exceeding it by 30%, the 30kVA/50kVA models feature ultra-low no-load loss of 80W/100W and optimized load loss. At 80% load, the series saves up to 18,000kWh of electricity annually for large-capacity models, with low no-load current improving the power factor to 0.96 and further reducing reactive power loss.
3.IP54 Protection & Harsh Environment Adaptability:Certified with IP54 dustproof and waterproof protection rating, paired with double-layer anti-corrosion coating on the steel tank, the transformer has salt spray resistance ≥1000 hours. It operates stably in outdoor environments with high dust (≥80mg/m³), high humidity (RH≥95%), mild corrosion, and wide temperature (-25℃~+45℃), realizing all-weather reliable power supply.

Advanced Production Process Advantages

1.Robotic Automatic Welding Technology:The steel tank adopts industrial robotic automatic welding with full weld seam coverage and welding precision ≤0.1mm. It achieves a 0 oil leakage rate, ensuring the airtightness of the fully sealed structure and laying a solid foundation for long-term maintenance-free operation.
2.Precision CNC Core Cutting & Stacking:Uses CNC precision silicon steel core cutting equipment with a cutting error ≤0.05mm, and automatic stacking technology to ensure the core lamination density is uniform. This reduces core loss and magnetic vibration noise, improving the energy efficiency and operational stability of the transformer.
3.Vacuum Oil Filling & Dehydration Process:Adopts a full vacuum oil filling and dehydration process (vacuum degree ≤50Pa) to remove air and moisture in the transformer oil and internal insulation structure. This improves the insulation performance and thermal conductivity of the oil, avoiding insulation aging and breakdown caused by moisture and air.

Innovative Design Highlights

1.30-Year Sealed Fully Enclosed Structure:Innovatively adopts high-performance fluororubber sealing components with a 30-year service life, matching the fully sealed tank design to isolate the internal transformer oil from the outside air completely. It eliminates the need for regular oil changes and solves the industry pain point of oil leakage and oxidation of traditional outdoor transformers.
2.Integrated Lifting Lugs & Forklift Slots:The tank is designed with integrated reinforced lifting lugs and forklift slots, without additional hoisting accessories needed for transportation and installation. It is compatible with forklifts and cranes, improving the convenience of outdoor on-site handling and installation, especially for narrow outdoor installation spaces.
3.Dual Connection Group & Tap Adjustment Design:Supports both Yyn0 and Dyn11 connection groups, with a built-in tap changer on the high-voltage side (±5%/±2×2.5% adjustment range). Users can flexibly adjust the connection mode and output voltage according to the actual power grid situation without complex disassembly and assembly, with strong on-site adaptability.

Logistics & Installation

1.IPPC Compliant Fumigation-Free Packaging:Adopts export-standard fumigation-free wooden packaging (IPPC certified), with shock-absorbing and anti-collision foam inside the packaging box and moisture-proof plastic film wrapping the transformer body. It ensures the product is not damaged during long-distance sea and land transportation and meets the import packaging requirements of various countries.
2.Convenient Container Transportation:The compact structure of the 30kVA/50kVA models is suitable for loading in 40GP/40HQ standard containers, with multiple units loadable in a single container to reduce transportation costs. The packaging is marked with clear hoisting, transportation, and storage signs to guide standardized handling.
3.Real-Time Logistics Tracking & Global Delivery:Cooperate with well-known international logistics companies to provide sea, land, and air multi-mode transportation services, supporting EXW/FOB/CIF and other flexible trade terms. The whole transportation process is tracked in real time, with professional customer service feeding back transportation information to customers in a timely manner to ensure on-time delivery.

Simple & Efficient Outdoor Installation

1.Compatible with Standard Industrial Foundations:Requires no special foundation construction, only a standard concrete foundation with a bearing capacity ≥10t/m² is needed, which can be constructed according to the national outdoor transformer foundation standard drawing. This reduces the construction period and initial construction investment.
2.Fast On-Site Installation (10 Hours):All units are pre-debugged at the factory, and on-site installation only includes foundation fixing, wiring, and grounding work. 2-3 electricians can complete the entire installation and commissioning in 10 hours, with no professional installation equipment needed, minimizing project downtime.
3.Integrated Hoisting & Handling Design:The tank is designed with integrated reinforced lifting lugs and forklift slots, which can be directly hoisted by a crane or transported by a forklift. It is suitable for narrow outdoor installation spaces such as industrial park corners and rural power grid stations, improving the convenience of on-site handling.

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With over a decade of strategic growth, Jinhand has become a leading manufacturer and supplier of electrical equipment in China. Our factory is equipped with advanced technologies and state-of-the-art equipment, and we invite you to purchase our top-quality, competitively priced Chinese-made products.