Product OverviewThe S Series 20 kV power transformer is engineered for high efficiency, low noise, and exceptional reliability. Designed for urban and rural distribution networks, industrial parks, and other high-load applications, the series leverages advanced technology and premium materials to deliver outstanding Transformer al performance and operational stability.ApplicationsThe S Series 20 kV transformer is widely used in urban and rural distribution systems, industrial parks, large industrial and mining enterprises, rail transit, power plants, and any site with stringent energy-saving and environmental requirements. With its high efficiency, stable operation, and low-noise performance, it is the ideal choice for modern distribution-network optimization and upgrades.Product DescriptionStrong adaptability: High temperature endurance and overload capacity ensure long-term stable operation even in harsh environments with elevated temperatures and high load factors.Elegant appearance: The enclosure is fully shot-blasted and powder-coated, fitted with wide-fin radiators for a durable, fade-resistant finish.Leak-free design: One-piece acrylic seals prevent leakage; every unit passes both positive- and negative-pressure leak tests before shipment.Safe & eco-friendly: All materials and processes meet safety and environmental standards—non-toxic, low-smoke, non-corrosive, and environmentally friendly.Key FeaturesUltra-low losses: New-type core and optimized windings cut no-load losses by 20 % and load losses by 10 % compared with conventional transformers, significantly improving efficiency.Ultra-quiet operation: High-grade silicon steel and optimized magnetic circuits reduce noise levels, meeting urban and residential environmental requirements.High reliability: Rigorously designed windings and active parts provide strong short-circuit withstand capability. Premium insulation and high-temperature transformer oil ensure safe, long-life operation.Green & energy-saving: Non-toxic, recyclable insulating oil and fully recyclable materials, superior sealing, leak-free performance, and virtually maintenance-free operation.Main SpecificationsVoltage rating: HV 20 kV / LV 0.4 kVPower range: 30 kVA – 3 150 kVACooling method: Oil-immersed self-cooled (ONAN)Vector group: Dyn11 or Yyn0Applicable standards:Power transformers: GB 1094, GB/T 10228Technical parameters & requirements: IEC 60354Transformer loading guide: GB/T 25384Minimum energy-efficiency values and grades for power transformersEnvironmental management systems: ISO 1400120kV 30-2500kVA 3-Phase 2-Winding No-Load Tap-Changing Distribution Transformers