DD series DC phepelo ea motlakase e nka moralo oa modular, 'me e hlokomela matla a phahameng, a morao-rao a hlahisoang ke theknoloji a etellang pele phepelo ea motlakase ka khokahano ea li-module tse ngata tse tšoanang.Sistimi e ka amohela moralo oa N+1 oa redundancy, o ntlafatsang ts'epahalo ea sistimi haholo.Lihlahisoa li sebelisoa haholo kholong ea kristale, ho lokisoa ha fiber ea optical, foil ea koporo le foil ea aluminium, plating ea electrolytic le kalafo ea holim'a metsi.