Cast resin transformer TTR

powerdistributionindustrial

TTR cast resin transformers are distribution, industrial and power transformers with ratings up to 30 MVA. Medium voltage windings are vacuum casted with epoxy resin and they are suitable for indoor or outdoor applications. Outdoor solutions can be realized with a wide range of boxes; for lower ratings there is the new type TTR IP00 (without enclosure), validated according to ENEL regulation. TTR transformer can be used in substations for public buildings, hospitals, airports, and in places where usage of liquid immersed transformers is restricted for fire risk or enviroment protection, e.g. tunnels, marine, cranes, offshore platforms, wind turbines, groundwater catchment areas and food processing plants. SEA cast resin transformers are certified in compliance with IEC60076-11 for: •F1 (Fire resistance class) Risk of fire: materials free of halogens, limited formation of fumes, self estinguishing transformer fire, limited contribution with calorific energy to the source fire •C2 (Climatic class) Lowest ambient temperature: operation -25 °C, storage and transport -25 °C •E3 (Environmental class) Heavy pollution, frequent condensation ________________________________________ SEA performed in external lab tests at very low storage temperatures confirming resistance of cast resin transformers in heavy conditions LOWER THAN -50 °C ________________________________________ Special technical executions can be realized according to the customer's requests: •On Load Tap Changer (OLTC) •Double or multiple tier execution •Multi secondary windings arrangement •Special passbars •Special cable output from enclosures •Different type of cooling (AN-AF-AFWF)