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New Zealand DM class electric multiple unit
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New Zealand DM class electric multiple unit
The New Zealand DM/D class electric multiple unit (also known as English Electrics) were a type of electric multiple units used on the suburban rail network of Wellington, New Zealand. Formed of DM power cars and D trailer cars, the first units were ordered from English Electric in 1936 and introduced on 2 July 1938 operating the electrified Johnsonville Line service. Additional units were ordered in 1942 for the line, and in 1946 as the other Wellington suburban lines were to be electrified.
The units were relegated to peak services and the Johnsonville Line after the arrival of the "Ganz-Mavag" EM/ET units in 1982–1983, before finally being replaced by the "Matangi" FP/FT units in 2011–2012. The units operated their last revenue service on 25 June 2012, from Wellington to Melling and return. Five complete units (four two-car and one three-car) and six trailer cars have been preserved.
Following its decision to build the Tawa Flat deviation to replace the original Wellington and Manawatu Railway Company portion of the North Island Main Trunk (NIMT) alignment out of Wellington, the New Zealand Railways Department (NZR) decided to convert the remaining 10.49 kilometres (6.52 mi) of track between Wellington and Johnsonville into an electrified suburban branch line. Six two-car trains comprising one driving motor car and one driving trailer were ordered from English Electric in 1936 to work the future Johnsonville Line, which formally opened as a branch line on 2 July 1938 with the new electric trains inaugurating the service. The new trains were allocated as the DM class (driving motor cars) and the D class (non-motored driving trailer). The first order became known as the "36 stock" by the year it was ordered (1936).
The first sets were shipped to New Zealand in January 1938.
Due to traffic growth both on the Johnsonville Branch and with further electrification in the Wellington suburban area, two further orders were placed with English Electric for further trains of this type; three motor cars and two trailers were ordered in 1942 and delivered in 1946 following the end of the Second World War, while forty motor cars and seventy-one trailers were ordered in 1946 and delivered from 1949 onwards to work the Paekākāriki and later Upper Hutt and Melling services. Due to the limited number of these trains, NZR was required to run additional locomotive-hauled carriage trains until the arrival of the first Ganz Mavag EM/ET units in 1982.
The class operated in two principal configurations:
Up to 1983 when electrification was extended to Paraparaumu some (D-DM-D) units were hauled from Paekākāriki by diesel locomotives, usually the DA class. They were fitted with extra storage batteries for lights and other electrics.
The introduction of the Traffic Monitoring System (TMS) in 1979 saw the units renumbered.
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New Zealand DM class electric multiple unit
The New Zealand DM/D class electric multiple unit (also known as English Electrics) were a type of electric multiple units used on the suburban rail network of Wellington, New Zealand. Formed of DM power cars and D trailer cars, the first units were ordered from English Electric in 1936 and introduced on 2 July 1938 operating the electrified Johnsonville Line service. Additional units were ordered in 1942 for the line, and in 1946 as the other Wellington suburban lines were to be electrified.
The units were relegated to peak services and the Johnsonville Line after the arrival of the "Ganz-Mavag" EM/ET units in 1982–1983, before finally being replaced by the "Matangi" FP/FT units in 2011–2012. The units operated their last revenue service on 25 June 2012, from Wellington to Melling and return. Five complete units (four two-car and one three-car) and six trailer cars have been preserved.
Following its decision to build the Tawa Flat deviation to replace the original Wellington and Manawatu Railway Company portion of the North Island Main Trunk (NIMT) alignment out of Wellington, the New Zealand Railways Department (NZR) decided to convert the remaining 10.49 kilometres (6.52 mi) of track between Wellington and Johnsonville into an electrified suburban branch line. Six two-car trains comprising one driving motor car and one driving trailer were ordered from English Electric in 1936 to work the future Johnsonville Line, which formally opened as a branch line on 2 July 1938 with the new electric trains inaugurating the service. The new trains were allocated as the DM class (driving motor cars) and the D class (non-motored driving trailer). The first order became known as the "36 stock" by the year it was ordered (1936).
The first sets were shipped to New Zealand in January 1938.
Due to traffic growth both on the Johnsonville Branch and with further electrification in the Wellington suburban area, two further orders were placed with English Electric for further trains of this type; three motor cars and two trailers were ordered in 1942 and delivered in 1946 following the end of the Second World War, while forty motor cars and seventy-one trailers were ordered in 1946 and delivered from 1949 onwards to work the Paekākāriki and later Upper Hutt and Melling services. Due to the limited number of these trains, NZR was required to run additional locomotive-hauled carriage trains until the arrival of the first Ganz Mavag EM/ET units in 1982.
The class operated in two principal configurations:
Up to 1983 when electrification was extended to Paraparaumu some (D-DM-D) units were hauled from Paekākāriki by diesel locomotives, usually the DA class. They were fitted with extra storage batteries for lights and other electrics.
The introduction of the Traffic Monitoring System (TMS) in 1979 saw the units renumbered.
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