... to 2500kVA4, Standard: GB/T10228, GB6450, IEC726, DIN425235, Insulation Level: LI75CA35/LI0AC36, Connection: Yyn0 or Dyn117, Transformer shell ... is optional, its production class is Ip20 or IP238, Wind-cool system and Temperature ... Overload Capacity14, High short-circuit resistant ability15, High insulation ability under over-voltage condition16, Mounted in sites with ...