University of Twente Student Theses


Luxon Armatuur: Ontwerp van de behuizing van de LFSW ballast

Kempen, Monica Johanna Christina van (2012) Luxon Armatuur: Ontwerp van de behuizing van de LFSW ballast.

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Abstract:Nedap Light Controls develops ballasts to control HID lamps. A newly developed ballast, the LFSW ballast, is able to work on quartz and ceramic lamps, where former ballasts only work on quartz lamps. While ceramic lamps can present color better then quartz lamps, the new ballast can also be applied in the retail. Another advantage of the ballast is that it is smaller than former ballasts. In this summary the making of the new luminair to fit this ballast will be shortly described. First step in designing the ballast was to find out what the requirements are of this new luminar. These demands are found by looking at the former luminaires, having conversations with Nedaps experts in lighting, visiting a new installation at a production plant and visiting the Light&Building fair in Frankfurt. Apart from the program of requirements obtained from this research, it became clear that heat, ease of installation, Luxon appearance, costs and a rotation symmetric design will be leading goals in the design process. Heat is very important because the lifetime of certain electronic elements (electric capicitors) in the ballast is very sensitive for high temperatures. The heat of the biggest heat source in the luminair, the lamp, therefore has to be guided away from the ballast. Simulations done with the lamp holder and ballast suppose a distance of 100 mm is enough to guide the heat away from the lamp holder naturally. Besides this heat, the heat generated by the ballast itself is diverted by placing the ballast upside down in an open structure. The aluminum casing under the top plastic layer of the ballast provides the necessary safety. The former luminaires made by Nedap are hard to install by one person because of the large number of different components and the complicated actions that have to be performed at the ceiling. In this new luminair less small parts are used and it is clear in the installation how different parts should be adjusted to every installation (this depends on the choice of reflector and choice of lamp). While visiting a new installation at a power plant, the installer of the power plant mentioned he chose for a Luxon ballast because of the savings made with this system. Costs in maintenance and purchase are leading for buyers of HID lighting. By producing as many parts of the luminair by Nedap, the price of the luminair without ballast, connectors, reflector, lamp, lamp holder and reflector holder is about €15,-. A standby lamp and motion sensor are also applicable, but have to be bought separately. In this price, development costs are not taking into account. The retail environment gives extra requirements to the design of the luminair. By applying a rotation symmetric shape, a ceiling full of luminaires will still look structured. With the former luminair being beam shaped, this occurred to be a problem in previous installations. Besides this point of optical design, a Luxon appearance was obtained by keeping a fresh look with a Luxon green detail in the luminair. During the design process it was clear the design of the ballast would not be finished before the luminair. The sizes of the luminair and the center of gravity are not specified because of this situation. In the report, recommendations are made in the field of cost reduction, controlling the wattage switch and extending the range of reflectors applicable on this luminair.
Item Type:Essay (Bachelor)
Faculty:ET: Engineering Technology
Subject:20 art studies
Programme:Industrial Design BSc (56955)
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