9 Accessory devices9.9 DX-LN… mains chokesDE1… Variable Speed Starter 11/16 MN040011EN www.eaton.com 1459.9 DX-LN… mains chokesThe DE1... variable speed starter’s rated input currents serve as the basisused to determine which mains chokes should be used.TFigure 87: main chokes DEX-LN…￫ If the DE1... variable speed starter is being run at its rated oper-ational current limit, the variable speed starter’s maximum pos-sible 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’su k value must not exceed 4 %, as these devices feature a“lean DC link”.￫ 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
