MGV Burn-in test

Eco-friendly technology:
Energy recovery during burn-in test

As a rule, power supply manufacturers ensure that their products undergo a burn-in test under nominal conditions prior to consignment. In the past, a highly stress-resistant ohmic appliance was connected as a current sink to achieve the rated load required of the appliances and the heat subsequently generated was released into the surrounding atmosphere.

Today, the tremendous power loss which occurs during this process is no longer simply a waste, it is, for the most part fed back into the mains network – to the benefit of both manufacturers and the environment.

Save money instead of wasting it

Before power supplies leave the MGV plant, they have to pass an endurance test under a rated load at the maximum permissible ambient temperature. Repeated switching on and off may be used as an additional stress factor. Based on a model calculation, the burn-in test facilities would, under full ohmic load, generate a power loss of 140 kW in the form of heat and as a result, would waste energy worth more than €120,000 each year.

Thanks to the recovery system, some €84,000 of this can be saved, since about 70% of the energy uptake is no longer wasted as heat, but reconverted.