50Hz 30kVA 11kv 400V Sealed Tank Oil Transformer Long Service Life S13 for Textile Mill

50Hz 30kVA 11kv 400V Sealed Tank Oil Transformer Long Service Life S13 for Textile Mill. 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.