9 Accessory devices9.9 DX-LN… mains chokesDE1 variable speed starter 09/14 MN040011EN www.eaton.com 1579.9 DX-LN… mains chokesThe DE1 variable speed starter's rated input currents serve as the basis usedto determine which mains chokes should be used.Tfigure 92: main chokes DEX-LN…￫ If the DE1 variable speed starter is being run at its ratedoperational current limit, the variable speed starter's maximumpossible output voltage (U2) will be reduced to about 96% of themains voltage (ULN ) due to the mains choke at a uk value ofapproximately 4%.￫ If using DE1-34… variable speed starters, the mains choke's ukvalue must not exceed 4%, as these devices feature a "lean DClink."￫ Mains chokes reduce the magnitude of the current harmonicsup to about 30 % and increase the lifespan of variable speedstarters and upstream-connected switchgear.Further information and technical data on the mainschokes of the DX-LN… series is provided in Instructionleaflet IL00906003Z.a
