Compact, highly mobile, and powerful synchronous generator PGG 3/1 with 2.8 kW output for autonomous power supply, for example on construction sites, in agriculture, or in municipal operations. The reliable four-stroke gasoline engine ensures safe operation thanks to consistent performance and advanced safety technology with overload and low oil protection, as well as easy transport of the user-friendly machine due to puncture-proof wheels and a foldable push handle. The two protective contact sockets are equipped with an automatic voltage regulator that provides a largely constant voltage. With operating times of up to 12 hours (6.5 hours at full load) on a 15-liter tank, entire workdays can be easily covered.