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Comparison of fluorescent lamp technology and LED technology with optimised lighting management in the Werd administrative centre LED pilot project, Zurich.

Over a period of four months, the lighting solutions of two comparable corridors were evaluated in the Werd administrative centre. The one corridor remained unchanged: the conventional fluorescent lamps with presence detectors switched off as soon as no movement had been detected in the corridor for ten minutes. The other corridor was converted to LED luminaires. In addition, the switch off delay of the presence detectors was reduced to one minute in several stages.

In the case of the LEDs, frequent switching or dimming has no adverse effects on lighting comfort and doesn’t cause any wear or tear. The measured power consumption of the LED solution with optimised presence monitoring was 81 per cent less than that of comparable luminaires fitted with fluorescent lamps.

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