During 1997, there were five incidents where NSB's Nordic Mobile Telephone equipment interfered with the locomotive's electronics, causing the emergency brakes to activate.
NSB | NSB Di 6 | NSB El 18 | NSB Class 93 | The preserved NSB El 10 in the livery of ''Sesam Stasjon | NSB Night Train | NSB Class 66 | NSB Class 30 |
The order was part of a holistic ordering program through which NSB in the late 1990s ordered the El 18, Di 6, the Class 71, Class 73 and Class 93.