Disjuntores ABB em painéis de baixa tensão

ABB

Disjuntores ABB em painéis de baixa tensão

Publicado: 17 de julho de 2013 · Categoria: Technical Papers

Deste documento

4 Technical Application Papers December 2006 ABB circuit-breakers inside LV switchboards 1SDC007103G0202 ABB circuit-breakers inside LV switchboards Index Introduction ............................................... 2 1 Problems of overheating inside switchboards 1.1 General aspects....................................... 3 1.2 The current carrying capacity.................. 3 1.3 Verification of temperature-rise by test (in compliance with IEC 60439-1)............................................ 4 1.4 Verification of temperature-rise by extrapolation............................................ 7 2 Advices to improve the current carrying capacity of the circuit-breakers inside switchboards 2.1 Power loss inside switchboards.............. 9 2.1.1 Internal structure................................................... 9 2.1.2 Tipology of the circuit-breaker installed................ 9 2.1.3 Cross-section of conductors within switchboards....................................................... 11 3 Problems concerning shortcircuit 3.1 Main definitions of the parameters characterizing a switchboard under short-circuit conditions.......................... 39 3.1.1 General prescriptions and information about short-circuit withstand strength.......................... 39 3.2 Prescriptions concerning the electrical circuits of a switchboard........................ 40 3.2.1 Main busbar systems.......................................... 40 3.2.2 Distribution busbars and conductors derived by...