Technical paper nº 1 | Low voltage selectivity with ABB circuit-breakers (EN)

ABB

Technical paper nº 1 | Low voltage selectivity with ABB circuit-breakers (EN)

Publicado: 3 de fevereiro de 2015 · Categoria: Cadernos técnicos

Deste documento

Technical Application Papers No.1 Low voltage selectivity with ABB circuit-breakers Technical Application Papers COVER CONTACT INFO Low voltage selectivity with ABB circuit-breakers Index A theoretical outline of selectivity Problems and requirements for the coordination of the protections......................................................... 2 Main definitions Selectivity................................................................. 3 Total discrimination (total selectivity)....................... 3 Partial discrimination (partial selectivity).................. 3 Overload zone Short-circuit zone.......................... 4 Real currents circulating in the circuit-breakers....... 5 Selectivity techniques Time-current selectivity............................................ 7 Current selectivity..................................................... 8 Time selectivity......................................................... 9 Energy selectivity................................................... 10 Zone selectivity...................................................... 11 How to obtain selectivity with ABB circuit-breakers Types of ABB circuit-breakers............................... 12 MCB Miniature Circuit-Breakers Supply-side S200 / Load-side S200...................... 13 Supply-side S800D / Load-side S200.................... 13 MCCB-MCCB Selectivity Current selectivity................................................... 16 Time...