Abstract: Monitoring and management system for the lamps of a lighting network comprising a device (1i), associated with each lamp (2i) of the network, provided with means (8, 19) for measuring the characteristic operating parameters of the lamp, at least one microprocessor (6, 20) for processing said measured parameters, and a transmitter/receiver for transmitting said data which are received by a central unit (100); said transmitter/receiver is of radio wave type and is arranged to receive the parameters measured by the successive devices (1i+1,n) and to transmit them, together with the parameters measured for the lamp (2i) with which it is associated, to at least the transmitter/receiver of that device (1i−1) associated with the preceding lamp (2i−1).

Abstract: Disclosed herein is a centralized power reducing device, particularly for lighting installations, comprising, on each phase of the installation power source, a winding (16) in series with load (10), wound on a magnetic core (18), the current supplied to load (10) flowing therethrough, a second winding (20) wound on said magnetic core (18), a drive or control current flowing therethrough, means (22, 24) for changing said drive or control current and wherein said means (22,24) for establishing the extent of the drive or control current in said second winding (20) are comprised of a multiple-tap autotransformer (22), the connection of said autotransformer (22) taps occurring by means of relays (24) controlled by a logic unit (26).