The 3MW drive-train was put through a two-month series of operational tests in a cold-climate chamber chilled to -40°C, to check the effects on the heating, cooling and lubrication of a wide range of components.
Each of five tests runs, which took between five and 13 hours, finished with the chamber thermostat being turned up to 60°C to run the rule over its performance in ultra-hot temperatures.
“Even
