Maybach 15kva generator Maybach 15kva generator with ATS is equipped with a number of features that make it a great choice for backup power. It has an automatic voltage regulator (AVR) that ensures stable output voltage, even when the load varies. It also has a low oil pressure shutdown switch that protects the engine from damage. The generator is also easy to start and operate, with a simple electric start system and a clear and concise control panel.