Three Phase Transformers 3CL Range Data Sheet Technical data_________________________________________________ Three Phase Power Transformer Standard Primary Voltage Secondary Voltage Frequency Insulation Class Insulation Resistance Dielectric Strength Ambient Temperature Duty Core Windings Cooling Terminals Earthing Enclosures Protection Vector Group Isolation Transformer with Earth Screen between Primary and Secondary IEC / BS-EN 61558, IEC60076 TBA TBA 50/60Hz F ˃ 5 Meg Ω Primary to Secondary. ˃ 2.5kV Primary to Earth ˃ 2.5kV Secondary to Earth ˃ 2.5kV 40° C Continuous duty at the rated kVA High Grade Electrical Steel, Securely clamped and tied Grade 2 Polyester covered Copper round wire or Nomex covered Copper Strip Open Transformers - AN Enclosed - ANAN Fan Cooling can also be provided on special units Din Rail mounted, Stud or Copper Bus bar according to the current level. Earth Screen between Primary and Secondary Windings with cable brought out and bonded to the Core and all Steel Metalwork. Sheet Steel Enclosures can be provided, please see our separate Data Sheets. Fuses or Circuit breakers can be fitted