MiniTec Workplaces - Minitec - #39

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MINITEC PROFILE SYSTEM 387 MANUAL WORKPLACE SYSTEMS LIGHTING LIGHTING Selection of correct lighting is of paramount importance for optimal workplace design. Lighting has influence on performance and tiredness as well as quality and safety at work. Illuminance: Illuminance on useful plane for demanding assembly and test work should be about 1100 lx. A rated illuminance of 1500 lx is recommended for very high requirements on eye sight such as optical work, assembly of electronic components, color control, etc. Luminance distribution: In the field of view, reflecting or self-luminous areas may cause great differences in luminous density (contrasts). Eye sensitivity correspondingly adapts itself according to luminous density within radius of action. Frequent change between very light and very dark areas will stress the eye by continuous change of sensitivity. Therefore, luminous density difference at work should not be more than 3:1. Glare: Glare sensation depends on luminous density, size of lighting surfaces and incident angle of light. Dazzling can be limited using reflectors, spill shields or built-in components. At the same time, sufficient shadow effect should be given for discriminating bodies and surfaces safely. All efforts should aim at shadows with soft edges and the light should be obliquely incident from above as natural light does. Illuminant color: Illuminant color has great influence on psychic sensation. Normally neutral-white light (4000 k) is appreciated as relaxing and agreeable. Daylight-white lighting should only be provided for color test or quality control at high rated Illuminance. Illuminance depending on level h of luminaire against working surface h = 750 mm h = 1000 mm h = 1000 mm h = 1250 mm h = 1250 mm Side luminaire 36 2 x Side luminaire 36 Center luminaire 78 Luminaire 78, 2 x luminaire 36 Center luminaire 116 h E/max E/medium E/max E/medium E/max E/medium X E/max E/medium E/max E/medium [m] [lx] [lx] [°] [lx] [lx] [lx] [lx] [m] [°] [lx] [lx] [lx] [lx] 0,75 1260 670 2045 1564 1,00 638 497 20 1043 894 1237 1003 0,25 20 2698 2354 3315 2471 0,50 20 3849 3099 1,25 402 329 15 704 626 808 672 0,25 15 1736 1568 2258 1789 1,50 276 232 15 510 457 567 497 1684 1402 Working surface 1000 x 600 2000 x 800