The NZR

New Zealand Railways Corporation

KiwiRail Network, formerly ONTRACK , is the infrastructure arm of KiwiRail. The ONTRACK trading name was introduced in 2004 after the government repurchased all of New Zealand's rail infrastructure from Toll NZ. It does not operate revenue rolling stock...

 EF class (originally NZR Class 30) is a class of 22 25 kV AC

25 kV AC

The 25 kV Alternating current railway electrification system is commonly used in railways worldwide, especially for high-speed rail.-Overview:This electrification system is ideal for railways that cover long distances and/or carry heavy traffic...

 electric locomotives that operate on the North Island Main Trunk between Palmerston North

Palmerston North

Palmerston North is the main city of the Manawatu-Wanganui region of the North Island of New Zealand. It is an inland city with a population of and is the country's seventh largest city and eighth largest urban area. Palmerston North is located in the eastern Manawatu Plains near the north bank...

 and Te Rapa

Te Rapa

Te Rapa is a mixed light industrial, large scale retail and semi-rural suburb to the northwest of central Hamilton, New Zealand.Stretching in a long, thin north-south axis, Te Rapa is home to a large number of factories including Te Rapa Dairy Factory, one of the largest of its kind in the world...

 (near Hamilton

Hamilton, New Zealand

Hamilton is the centre of New Zealand's fourth largest urban area, and Hamilton City is the country's fourth largest territorial authority. Hamilton is in the Waikato Region of the North Island, approximately south of Auckland...

) in New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

. They are the only class of 25 kV AC locomotives to operate in New Zealand, and one of the two mainline electric locomotive classes in New Zealand - the other being the 1968 EO class

NZR EA class

The NZR Ea class were used by New Zealand Railways between 1968 and 1997 on the OtiraArthur's Pass section of the Midland line in the South Island, through the Otira Tunnel...

 1500V DC locomotives originally built for the Otira Tunnel

Otira Tunnel

The Otira Tunnel is a railway tunnel on the Midland Line in the South Island of New Zealand between Otira and Arthur's Pass. It runs under the Southern Alps from Arthur's Pass to Otira - a length of over . The gradient is mainly 1 in 33, and the Otira end of the tunnel is over lower than the...

 and now in service for Tranz Metro

Tranz Metro

Tranz Metro, part of KiwiRail, is the operator of Metlink suburban trains owned by the Greater Wellington Regional Council in the Wellington Region of New Zealand....

 in Wellington.

The EF class was built by Brush Traction

Brush Traction

This article is about a British rail-locomotive maker. For the Detroit auto-maker, see Brush Motor Car CompanyBrush Traction is a manufacturer and maintainer of railway locomotives, part of the FKI group , based at Loughborough in Leicestershire, England situated alongside the Midland Main Line.-...

 in Loughborough

Loughborough

Loughborough is a town within the Charnwood borough of Leicestershire, England. It is the seat of Charnwood Borough Council and is home to Loughborough University...

, United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 between 1986 and 1988.