SACE Emax DC: Direct Current Applications - VAE ProSys sro

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SACE Emax DC: Direct Current ApplicationsDirect Current Network TypologyMedian Point connected to Earth– Fault a: the fault between the two polarities sets up a short-circuit current to which both polaritiescontribute to the full voltage U, according to which the breaking capacity of the breaker isselected.– Fault b: the fault between the polarity and earth sets up a short-circuit current less than that ofa fault between the two polarities, as it is supplied by a voltage equal to 0.5 U.– Fault c: the fault in this case is analogous to the previous case, but concerns the negative polarity.The breaker must be inserted on both polarities.ABB SACE
SACE Emax DC: Direct Current ApplicationsCircuit Breaker SelectionTo correctly select the devices for the protection of a direct current network the following factorsmust be considered:• The type of network - earthing connection• Rated Current• Voltage Current• The prospective short-circuit current at the point of installationHere below the rating plate of an Emax DC air circuit breaker for direct current applicationABB SACE
Page 1: Annex to the technical catalogueEma
Page 4 and 5: SACE Emax DC automatic circuit-brea
Page 6 and 7: SACE Emax DC: Direct Current Applic
Page 10 and 11: Protection Releases and trip Curves
Page 12 and 13: Protection Releases and trip Curves
Page 14 and 15: Protection Releases and Trip Curves
Page 26 and 27: Overall dimensionsFixed circuit-bre
Page 28 and 29: Overall dimensionsFixed circuit-bre
Page 30 and 31: Overall dimensionsWithdrawable circ
Page 32 and 33: Overall dimensionsWithdrawable circ
Page 34 and 35: Overall dimensionsCircuit-breaker a
Page 36 and 37: Circuit diagramsReading information
Page 38 and 39: Circuit diagramsCircuit diagram sym
Page 40 and 41: Circuit diagramsCircuit-breakersMot
Page 42 and 43: Circuit diagramsCircuit-breakersAux
Page 44 and 45: Ordering codesSACE Emax DC automati
Page 46 and 47: Ordering codesSACE Emax DC automati
Page 48: Ordering codesSACE Emax FP fixed pa

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