Success Stories
Kema transport company (Netherlands (The Netherlands))

Intelux luminous flux regulators for indoor lighting management


In 1992 KEMA, the Dutch Transport and Distribution Company, carried out a study on its lighting system to assess the amount of savings that can be obtained by adopting the control of the luminous flux, in particular by partializing the artificial flux according to the amount of daylight. , and at the same time check the increase in lamp life. Faced with the impossibility of making theoretical predictions of some value on energy saving and increasing lamp life using various control systems available on the market, manufacturers were asked to install their equipment in KEMA offices to check and test them. for a significantly long period.


In all past installations, the Intelux system has proven to be able to guarantee an optimal balance between the conflicting needs of energy saving and high quality lighting.
In order to have a complete and exhaustive view of the existing systems, the test was carried out simultaneously with two systems, one based on high frequency electronic ballasts and the Intelux system, which is installed by associating it with conventional electromagnetic ballasts. The trial began on September 24, 1993 and ended on September 20, 1994 (361 days). The system worked continuously for 11,376 hours, equal to 35/40 months of normal use. The basic lighting level was set at 500 lux in all offices, and kept constant throughout the test. The controllers of the Intelux range worked continuously throughout the trial period. Only once did the light go out for a lighting check, and immediately all the fluorescent tubes came back on immediately. The regulators allowed a wide range of control. For several weeks the power demand was only 8 kVA, for other weeks more than 16 kVA.


By using the controllers of the Intelux range, by comparing the plant under control with an equal traditional sample plant, the energy consumption has been reduced by up to 57% with an annual average of 43%. During the night, without the influence of daylight, the power demand was reduced from 264 W to 196 W. The efficiency of the light sources increased, with the partialization, from 78.8 Lm / W to 81.6 Lm / W, while the natural decay of the tubes with Intelux regulators was lower than that observed in the traditional system. Users also found that the level of light quality remained unchanged compared to the reference sample rooms.