... S9 Series three Phase Oil Immersed Distribution Power Transformer 1. Standard: GB1094-1996; JB/T10088-2004; GB/T6451-2008; ... ,Dyn5,Yyn0, Dyn11 or others8. Short Circuit Impedance: Standard impedance (For details see technical data sheet)Features: S9 33kV transformer equipped ... characters as low loss, low noise, strong protection for thunder and lighting, well anti-shortcut capacity and fine ...