INPUT POWER MEASUREMENT IN AN OPERATING DEVICE FOR BUILDING TECHNOLOGY DEVICES

The present invention discloses an operating device (2) for electrically power at least one building technology device (10), in particular a illuminant section having at least one illuminant, wherein the operating device (2) comprises an input (E2, E2',E2") for electrically connecting an electric power supply (9), in particular an AC voltage source, an output (A2, A2', A2") for electrically connecting at least one building technology device (10), an electrical supply path having at least one converter stage (6), preferably a PFC circuit, which connects electrically the input (E2, Ε2', E2") and the output (A2, Α2', A2") of the operating device (2) to one another, and a control unit (7), which is designed for controlling the at least one converter stage (6); wherein the control unit (7) is configured, for the purpose of measuring the input power, to measure an input voltage and an input current of the electrical supply path between the input (E2, Ε2', E2") of the operating device (2) and of the at least one converter stage (6). The present invention further discloses a building technology apparatus having such an operating device according to the invention and a method for measuring an input power of such an operating device according to the invention.