Replacement Parts For Matangi
KiwiRail reports that replacement auxiliary power units are being freighted to Wellington to overcome the fault which led to new Matangi Metro passenger units being briefly withdrawn from service.
Last month, after two Matangi units experienced some overheating faults in the auxiliary power unit, electrical engineers from Korean manufacturer Hyundai Rotem, carried out an investigation and confirmed the issue lies with the inductor coil, KiwiRail were told in their weekly newsletter.
They have since been working on a redesign and type testing is underway in Korea. Once they’re satisfied the new design will be fit for purpose in Wellington conditions, a prototype will be brought back for further testing before it enters production.
The replacement units will be freighted out to retrofit to the Matangi units already in Wellington, and it’s expected all Matangi in Wellington will have the new unit in September.
- installation of cooling fans
- Changes to the train management system
- Lowering of overhead line voltage in the depot
- Changes to the “switching frequency” in the APU
- Additional inspections by engineers..