class class norwegian type class electric multiple units built norwegian state railways delivered built opening served line closed trains retired periodically served delivery consisted motor cars carriages train consisting units motor cars meters long power output kilowatts capable mph motor units given road numbers units preserved station history line opened steep branch connect bergen line kilometers long maximum gradient percent minimum curve radius meters maximum speed mph maximum permitted axle load tonnes long tons short tons standard gauge electrification system taken delivery electric multiple unit class use commuter trains ordered similar units modified higher power output motor cars carriages delivered mechanical components assembly electrical equipment class similar future class regarded prototype class shortest multiple units november received electric traction class trains line curved trains received track brakes locomotives delivered class trains continued periodically insufficient availability periods little traffic unit retired december damage found carriages bad shape needed replaced trailers class class taken use short period class trailer august passenger traffic line terminated remaining trains retired reasons termination included lack sufficient political support financing new trains class longer suitable use trains preserved stored specifications units motors giving combined power output kilowatts overall length meters weighed tonnes long tons short tons wheel arrangement motor cars capacity passengers maximum speed mph steep units low weight combined high power output track brakes dynamic braking originally given road numbers later changed
NSB Class 64