A transformer is an electrical device that transfers energy between two or more circuits through electromagnetic induction. A varying current in the transformer's primary winding creates a varying magnetic field in the core and this varying magnetic field induces a varying voltage in the secondary winding. For best energy transfer each transformer core is produced with interleaved laminations of cold rolled, grain orientated, low loss electrical sheet steel conforming. Our core designs are ensuring minimum noise and loss levels with uniform flux distribution throughout the magnetic circuit.
Low Voltage and High Voltage Windigs
According to customer requirements Low Voltage and High Voltage windings are designed with Copper are Aluminum conductors. LV windings are made of paper insulated conductors or foils. HV windings are made of enameled wires or paper insulated conductors. All components of insulation are made from electrical grade insulating board; processed to ensure electrical and mechanical stability throughout the temperatures found in operational service. High technology winding machines and manufacturing with qualified technicians ensure that each winding is able to withstand the excessive axial forces, which may result from external sources.
Tank and Top Cover
Transformer tanks are manufactured using mild steel, which is electrically welded. Cooling is effected corrugated walls or radiators, electrically welded and independently pressure tested. Metal is pre-treated by sand blasting, then immediately covered with a high performance industrial paint finish, suitable for highly corrosive environments. This finish is designed to give maximum world-wide, long term protection in coastal, industrial, and general environments with suitable heat and oil resistance.
Drying Process and Final Assembly
Completed core-coils are dried in thermostatically controlled vacuum ovens, fitted into the transformer tank and filled with oil under a vacuum. This is followed by oil pressure adjustments. After the tanking process is complete the transformer is prepared for test.
Atlas Trafo applies all routine tests, type and special tests as per IEC EN 60076-1 standard. Tests according to ANSI/NEMA standards can also be carried in ATLAS Trafo laboratory. All transformers are dispatched to the customer only after successfully passing the final inspection and testing.
Atlas Trafo production and its products are certified by several authorities.