New Zealand EM class electric multiple unit
| New Zealand EM/ET class | |
|---|---|
EM 1367 leading a southbound four-car train on the Hutt Valley Line, 17 May 2003.
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| In service | May 1982 – 27 May 2016 |
| Manufacturer | Ganz-Mavag, Budapest, Hungary (electrical components from GEC traction, United Kingdom) |
| Constructed | 1979 – 1982 |
| Entered service | May 1982 – 1983 |
| Refurbishment |
Tranz Rail 1996 – 2002 (entire fleet) and Metlink/Tranz Metro 2010 (one unit) |
| Number built | 44 |
| Number in service | 0 |
| Number scrapped | 0 |
| Formation | 1 EM + 1 ET per unit |
| Fleet numbers | EM 1004 – 1528 ET 3004 – 3528 |
| Capacity | 148 seats |
| Operator(s) | Tranz Metro |
| Depot(s) | Wellington |
| Line(s) served | Kapiti, Hutt Valley, Melling |
| Specifications | |
| Car body construction | 20.73 m (68 ft 1⁄8 in) |
| Train length | 43.06 m (141 ft 3 1⁄4 in) per Unit. |
| Car length | 21.53 m (70 ft 7 5⁄8 in) over Couplers. |
| Width | 2.72 m (8 ft 11 1⁄8 in) |
| Height | 3.73 m (12 ft 2 7⁄8 in) without pantograph |
| Platform height | 0.73 m (2 ft 5 in) |
| Doors | 8 electrically operated sliding twin doors (centrally controlled) |
| Maximum speed | 95 km/h (59 mph) |
| Weight | EM: 37.6 t (37.0 long tons; 41.4 short tons) ET: 34.5 t (34.0 long tons; 38.0 short tons) |
| Power output | 400 kW (540 hp) |
| Transmission | Camshaft-controlled resistance |
| Power supply | Motor-alternator producing 230/400 V 50 Hz AC |
| Train heating | Electric heating |
| Electric system(s) | 1500 V DC overhead |
| Current collection method | pantograph |
| UIC classification | Bo-Bo+2'2' |
| Braking system(s) | Westinghouse "Westcode" electropneumatic brakes (six-step) with automatic air brake backup |
| Multiple working | Within class only |
| Track gauge | 3 ft 6 in (1,067 mm) |
| Notes | |
The New Zealand EM/ET class (also known as Ganz-Mavag) electric multiple units were used on suburban services in Wellington, New Zealand from 1982 to 2016. They were owned initially by the New Zealand Railways Corporation and finally by the Greater Wellington Regional Council (GWRC) and operated by Tranz Metro, part of national railway operator KiwiRail.
The 44 two-car units of an EM motor car and an ET trailer car were introduced between 1982 and 1983 on the 1500 V DC electrified Kapiti, Hutt Valley and Melling lines. After the introduction of the "Matangi" FP/FT class EMUs in 2011–12, they were largely been relegated to peak services. In 2012, the GWRC decided to order a second batch of Matangi units to replace the Ganz-Mavag units, and the last units were withdrawn from revenue service on 27 May 2016 after 34 years in service.
The name "Ganz-Mavag" comes from the units' manufacturer, Ganz-Mavag of Hungary. It was widely used by the GWRC and in the media to distinguish them from other electric multiple units used on the Wellington suburban lines; they were also referred to as Hungarian units.
The cost was NZ$33 million, then the single largest order of rolling stock in New Zealand Railways Department's history. This cost was partially offset by a barter agreement involving the Hungarian Government buying New Zealand dairy products, chiefly butter.
Their introduction spelled the end of the carriage trains hauled by the EW electric locomotives, though electric-hauled carriage trains were temporary reintroduced behind the EO locomotives between 2008-2011, and Wairarapa Line services are diesel-hauled. A number of the older English Electric DM/D units were retained, mainly for use on the Melling and Johnsonville Lines.
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