New Zealand FP class electric multiple unit

New Zealand FP/FT class Matangi
FP5033 at Petone station
Interior of an FP carriage of the Matangi EMU
In service	August 2010
Manufacturer	Hyundai Rotem Mitsui
Built at	Changwon, South Korea
Replaced	DM/D class EM/ET class
Constructed	2008–2012, 2014–2016
Entered service	December 2010–2016
Number built	83
Number in service	83
Formation	2 cars (FP–FT) per unit
Fleet numbers	4103–4610 5010–5396
Capacity	147 seated, 230 standing (FP/FT unit)[1]
Operators	Tranz Metro (2010–16) Transdev Wellington (2016–)
Depots	Wellington
Lines served	Wellington suburban lines Kapiti Line Hutt Valley Line Melling Branch Johnsonville Branch
Specifications
Car body construction	Stainless steel[2]
Train length	44.03 m (144 ft 5 in)[2]
Car length	21.53 m (70 ft 8 in) (FP) 22.5 m (73 ft 10 in) (FT) [2]
Width	2.73 m (8 ft 11 in)
Height	3.64 m (11 ft 11 in) without pantograph
Floor height	1,100 mm (3 ft 7 in) (high floor) 730 mm (2 ft 5 in) (FT low floor)
Platform height	730 mm (2 ft 5 in) nominal
Entry	Level
Doors	8 × electronically operated twin doors (open on demand)
Maximum speed	120 km/h (75 mph) (design) 95 km/h (59 mph) (service) [2]
Weight	76.9 t (75.7 long tons; 84.8 short tons) total[1]
Traction system	IGBT–VVVF[2]
Traction motors	4 × 170 kW (230 hp) 3-phase AC
Power output	680 kW (910 hp)[1]
Acceleration	0.84 m/s2 (2.8 ft/s2)
Deceleration	0.9 m/s2 (3.0 ft/s2) (service) 1.2 m/s2 (3.9 ft/s2) (emergency)
Power supply	2 × 50 kVA auxiliary power units, producing 230 V 50 Hz AC from traction supply
HVAC	Heating and air conditioning
Electric system(s)	1,500 V DC overhead catenary
Current collector(s)	Pantograph
UIC classification	Bo′Bo′+2′2′
Braking system(s)	Rheostatic, electropneumatic and air
Coupling system	Knuckle Scharfenberg
Multiple working	Within class only
Track gauge	1,067 mm (3 ft 6 in)
Notes/references
Sourced from [3] except where noted

The New Zealand FP/FT "Matangi" class^[4][5] (/ˈmɑːtʌŋi/) is a class of electric multiple units used on the suburban rail network of New Zealand's capital city, Wellington. The class, consisting of an FP power car and an FT trailer car, operates services on all electrified lines of the network which comprise the Kapiti, Hutt Valley, Melling and Johnsonville lines. The units are owned by Greater Wellington Rail Ltd,^[3] a subsidiary of the Greater Wellington Regional Council (GWRC), and have been operated by Transdev Wellington under contract to the GWRC since 2016. They were previously operated by Tranz Metro, a former division of KiwiRail.

The FP/FT units were built in South Korea by a consortium of Hyundai Rotem and Mitsui, with the first unit arriving in New Zealand in July 2010 and entering full-time service in March 2011. The first batch of 48 units, the 4000 series units, allowed an increase in the capacity of the Wellington network, and allowed the retirement of the ageing DM/D class "English Electric" multiple units that were introduced between 1949 and 1954. The 4000 series also relegated the EM/ET "Ganz-Mavag" class multiple units (introduced 1982-83) to peak services only. A second batch of 35 units, the 5000 series, were introduced in 2015–16 to replace the remaining EM/ET units.