Sumários
Circuit-Breakers and Protective Relaying
23 abril 2018, 14:00 • José Luís Pinto de Sá
Elements of circuit-breakers design, specifications and operations. IEC Standards.
Protective relaying fundamentals.
Design for short-circuits
18 abril 2018, 14:00 • José Luís Pinto de Sá
Mechanical stresses in cable junctions, bars, conductors and transformers, from short-circuit currents.
Thermal stresses from short-circuits.
Arc flash and destruction.
Designing for short-circuit withstanding. Metal-clad boxes.
Power Transformers
16 abril 2018, 14:00 • José Luís Pinto de Sá
Power transformers and thermal rating. Losses and efficiency. Short-circuit impedance. Meaning of "pu".
There was a breake because os a fire alarm simulation in the building.