Product OverviewDesigned specifically for battery-storage applications, this dry-type transformer combines high efficiency, safety, and environmental friendliness.  Its oil-free, open-ventilated design delivers excellent insulation, low losses, and outstanding short-circuit withstand capability.  Natural or forced air cooling, low-noise operation, and robust construction allow reliable service in hospitals, smart parks, solar-storage charging stations, data centers, and other user-side energy-storage projects.ApplicationsTailored for user-side energy-storage systems where power quality and continuity are critical—hospitals, smart campuses, PV-storage EV charging hubs, data centers, and similar facilities that must remain stable during grid fluctuations.Product DescriptionEpoxy-cast windings with an un-encapsulated surface provide superior heat dissipation, high overload capacity, and safe power conversion.Compact, space-saving layout simplifies integration into containerized or indoor installations.Operates reliably from –40 °C to +180 °C, meeting diverse storage-environment requirements.Flame-retardant, non-explosive construction is ideal for sensitive sites such as hospitals and data centers.Equipped with an intelligent transformer terminal and IoT cloud platform for smart O&M and predictive maintenance.Key FeaturesHigh safety: Oil-free design eliminates leakage and fire risk, meeting the most stringent safety demands.Superior insulation: F- or H-class insulation retains excellent diTransformer performance under high temperature and humidity.Excellent cooling: Natural air (AN) or forced air (AF) maintains stable temperatures during sustained high-load operation typical of storage systems.Strong short-circuit withstand: Continuous-disc HV and foil-wound LV coils, vacuum-pressure cast, deliver exceptional short-circuit and surge strength.Low-loss & eco-friendly: High-grade grain-oriented silicon steel with 45° step-lap stacking cuts no-load losses and current, reducing energy consumption and carbon footprint.Ultra-low noise: Optimized core geometry and anti-vibration treatment keep noise ≤ 55 dB, suitable for noise-sensitive locations.Main SpecificationsPower range: 100 kVA – 5 000 kVAPrimary voltage: 6 kV, 10 kV, 35 kVInsulation class: F or HCooling: Natural air (AN) / Forced air (AF)Frequency: 50 Hz or 60 HzShort-circuit impedance: 4 % – 6 %Applicable StandardsGB/T 1094.1-2013 Power transformers – Part 1: GeneralGB/T 1094.3-2017 Power transformers – Part 3: Insulation levels, diTransformer tests & external clearancesGB/T 1094.5-2008 Power transformers – Part 5: Ability to withstand short circuitGB/T 1094.10-2022 Power transformers – Part 10: Determination of sound levelsGB/T 1094.11-2022 Power transformers – Part 11: Dry-type power transformersGB/T 1094.12-2013 Power transformers – Part 12: Loading guide for dry-type transformersGB/T 10228-2015 Dry-type power transformers – Technical parameters & requirements