<h4>Introducing the FLEX concept</h4>
<p>The FLEX concept involves converting existing Class 319 units to Class 769 FLEX units, delivering lower operational costs on both electrified and non-electrified routes, by fitting two new powerpacks – one under each driving vehicle. These low emission (Stage IIIB compliant) MAN engines are coupled to ABB alternators which in turn provide power to the existing DC bus, and the traction and auxiliary equipment.</p>
<p>The modular design of the powerpack rafts means the vehicle can be adapted for future energy modes. Diesel engines can be replaced by battery packs and hydrogen fuel cells to create a zero emission self-powered unit.<br /><br />This exciting concept will result in passenger trains offering performance that can match or exceed the diesel fleets they replace, significantly raise air-quality, and offer a cost-effective alternative to commissioning brand new trains.</p>