The New Zealand EF class locomotive (nicknamed Toasters) is a very notable train in KiwiRail’s fleet, as it’s currently the only mainline electric locomotive, and electric #freight#train in #NewZealand. All other operating locomotives are diesel.
The concept for the EF class (originally Class 30) came around during the oil crisis in the 1970s. It was decided that the 411-kilometre section of the North Island Main Trunk line (NIMT) between Palmerston North and Te Rapa (Hamiliton) was to be electrified with 25 kV AC. This was the first section of track in NZ to be electrified in many decades, and the first line in NZ to be electrified with 25 kV AC.
The EF class was introduced in 1988 with the completion of the NIMT electrification. They are New Zealand’s most powerful locomotives with a power output of 3,000 kW (4,000 hp) (continuous). The use a semi-uncommon wheel arrangement of Bo-Bo-Bo, well suited for NZ’s light and curvy tracks. Like most electric trains they also feature regenerative braking, thus allowing for massive power savings as energy generated from braking can be fed directly back into the grid.
A total of 22 EF class locomotives were built. In 2016 there were plans to phase out the EF class, and replace them with DL class diesel locomotives, as they were past their expected life-span, and worn out. However, in 2018 it was announced that 15 units will undergo life extension overhauls, as there is strong demand for environmentally #sustainable and zero emission modes transportation. The other 7 units have been scrapped or laid up over their years of operation. Unfortunately, the overhauls will only extend their lifespans by around 10 years.
Another thing to note is that the Eurotunnel Class 9 freight locomotives are based off the EF class.
Photo Credit: Cody Cooper
