... /T10228, GB6450, IEC726, DIN425235, Insulation Level: LI75CA35/LI0AC36, Connection: Yyn0 or Dyn117, Transformer shell is optional, its production class is Ip20 or IP238 ... resistant ability15, High insulation ability under over-voltage condition16, Mounted in sites with adverse circumstances17, In case of forces air cooling, the rated ...