class electric locomotives built norwegian state railways class built delivered numbered second delivered numbered traction system based class germany bbc world feature phase motors units ordered bergen plagued technical faults traction equipment etc lack sufficient power forced instead use regional delivery series retired second series locomotives maximum kilowatts power output lbf effort allowing locomotive haul car train run power supply capable operating mph units wheel arrangement brakes weigh tonnes long tons short tons series delivered time similarities class history late 1970s need new rolling stock trains electric multiple units considered instead chose order locomotives greater operational flexibility choice fell german class phase locomotive world regular service prototype test service serial version norwegian variation scaled maximum axle load long tons short tons class long tons short tons lower power output class powerful predecessors instead order placed norwegian electric locomotive mechanical components built germany time ordered axle diesel electric locomotives mark danish mark similarities electric counterpart planned motors weight restrictions received type class locomotives numbered delivered time delivery passenger cars train regular service operated september plagued problems components etc quickly decided operate pairs case unit fail july fire sent redesigned initially placed unit service round trip oslo trondheim day technical original trains rebuilt times end different technical solutions eventually felt confident found technical solution satisfactory ordered units allow trains bergen hauled class units delivered regular service line better series second series prone technical problems entered regular service 1990s service regional rail services units liked bad series given partly number available units unpredictable took discover locomotives needed operated differently locomotives designed haul car train regularly needed haul car trains instead powerful early 1990s decided replace trains class multiple unit locomotives hauled trains swiss designed electric equipment bbc aside scrapped following year second series service steep tourist line connects units painted green connected end train passenger cars series taken regular service units service unit transferred display specifications built manufacturer germany locomotives phase motors continuous output power kilowatts allowing maximum speed kilometres hour mph units receive power class locomotive brakes electrical equipment designed manufacturer bbc german plant built norwegian manufacturer locomotive equipped motors giving wheel arrangement maximum effort lbf dry rails electric locomotive designed trains capable hauling light freight trains body self containing construction roof light sections removed locomotives norwegian locomotives center aisle machine room locomotives metres long wheel diameter millimetres weigh tonnes long tons short tons locomotives run multiple signalling cable locomotives need adjacent train unique pointed found classes
NSB El 17