Shopping centre buys into benefits of Tebis lighting control

Installation time savings of 30 to 40% have been gained using Hager’s Tebis system to control the lighting as part of the £23 million refurbishment of the Clyde shopping centre in Clydebank, compared with using a conventionally wired control system. It also helped minimise disruption during the work, with the centre remaining open to the public. The Tebis system switches the centre’s lights, car-park lights, external security lighting and coloured display lighting to pick out the architectural steelwork fo aesthetics. Consultant Waterman Gore felt that a bus-based system provided the most flexible and simple answer for this project. The system uses a single twisted-pair cable, or central bus line, from which all input and output devices are tapped off. Tebis enables separate lighting circuits to be switched in response to different combinations of daylight and timers. At 7 a.m., all lights throughout the centre and car park are switched on until dawn, when a photocell turns off the coloured display lights to conserve energy. At dusk, the display lighting is switch on again. At 9 p.m., the timer turns lighting to security modes, leaving just a third of the lighting on. Commissioning is simplified by giving all lighting circuits, sensors and controllers individual addresses and programming which output devices respond to which input devices.
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