Estudo de caso | Source Ground Return with SACE Emax 2 (EN)

ABB

Estudo de caso | Source Ground Return with SACE Emax 2 (EN)

Publicado: 3 de fevereiro de 2015 · Categoria: Estudos de caso

Deste documento

Case studies Source Ground Return with SACE Emax 2 The Customer SEI S.r.l. was founded in 2005 and in few years has become a leading company as manufacturer of LV switchgear. It is present worldwide with high-quality products, which can be customized to meet the designing requirements of its customers. The challenge The project concerns a plant for crude oil delivery realized on behalf of an oil and gas company. The challenge was to provide complete and total protection against earth faults in any point of the plant, with the commitment of guaranteeing selectivity between the MV and LV circuit-breakers to isolate only the area affected by the fault. Complete protection of the plant 100% Direct contacts Short-circuit protection for the electrical plant, using a single protection device Transformer disconnection Overload Thanks to the unique features of Emax 2 with the Ekip signalling module, it has been possible to get such a quick trip time that the fault is eliminated before the MV circuit-breaker receives the opening command. Source Ground Return with SACE Emax 2 | ABB The ABB solution Using the Ekip Hi-Touch trip unit and with no need of indirect multifunction relays, it has been possible to protect the plant by managing two independent curves for the protection against earth faults (function G). Thus, the function Source Ground Return is implemented, which guarantees protection against the earth faults, both on the supply (restricted) as well as on the load side...