S13 Copper Winding Hermetically Sealed Transformer 100kVA 11kv 400V 4% Impedance for Cold Storage

S13 Copper Winding Hermetically Sealed Transformer 100kVA 11kv 400V 4% Impedance for Cold Storage. Uses dry air, nitrogen and eco-friendly gas mixtures instead of traditional SF6, producing zero greenhouse gas emissions and fully compliant with environmental standards. Fully-sealed design with IP67 (gas compartment) and IP54 (enclosure) protection class, delivering superior defense against dust, moisture and condensation. Stable and reliable operation in high-temperature, high-humidity, dusty and other harsh outdoor conditions with excellent short-circuit withstand capability. Integrated modular structure supports flexible expansion and optional automation DTU terminals; long mechanical service life with simple maintenance. Fully compliant with State Grid standards and IEC specifications; widely used in urban power distribution, renewable energy projects and overseas outdoor ring network applications.