Transformers, voltage converters and switchgear – these are all key factors for ensuring that the electricity grid works properly so that, wherever consumers are, the lights come on, air conditioning systems keep temperatures pleasant inside buildings, and the machinery in factories keeps working. To ensure that power supplies remain reliable, it is essential that all of these operating components are regularly inspected. However, transporting them back to the factory would come at great financial cost, and the process would consume vast amounts of time. This is why Ausgrid decided to invest in a mobile AC testing system that would allow test engineers to drive the necessary equipment directly to the substations.