The Deliverable includes simulations and results obtained from the tests performed with the low power converter prototype of 15kW@1200VDC. Among others tests, long-term overvoltage, reset behaviour, connector interruption, signal lines short-circuits, EMC/ESD tests (electrical tests); high/low temperature aging, increment temperature test, low/high temperature operation, damp heat cyclic, thermal shocks for components (environmental test), vibration and mechanical shock test (mechanical); and insulation resistance, dielectric strength, protection against water and dust (safety tests) are performed and discussed in this report.