928 CATALOG | technical information WHERE DO I NEED HOW MANY LUMENS? You should plan for these lumens per square metre, so that your home is optimally and comfortably illuminated: guide values: living room approx 140 lm/m² bedroom approx 140 lm/m² children's room approx 140 lm/m² hallway approx 140 lm/m² study approx 280 lm/m² kitchen approx 280 lm/m² bathroom approx 280 lm/m² WHAT DOES »LUX« MEAN? Lux [lx] is the physical unit of the illuminance of a light source. This photometric quantity indicates how much luminous flux from a light source falls on a given surface. Of course, the following values do not have to be achieved in the entire room. guide values: bedroom 45 Lux living room 77 Lux bathroom 110 Lux hallway 207 Lux study/office 300 Lux [at desk: 500 Lux] WHAT IS HOW BRIGHT? How many lumens do different lamps shine with? candle ~ 12 lm 100W incandescent bulb ~ 1.340 lm 40W fluorescent lamp ~ 3.000 lm HOW MANY LUMENS CORRESPOND HOW MANY WATT? Luminous efficacy is measured in lumens per watt [lm/W] and indicates how efficiently a lamp shines and how nergy is converted into light. guide values: incandescent bulb approx 10 lm/W halogen lamp approx 20 lm/W fluorescent lamp approx 70-90 lm/W LED lamp approx 60-170 lm/W IK VALUE In addition to the IP protection class, you should also keep an eye on the IK value of a luminaire, which is increasingly required within the scope of tenders and for installations in public spaces. The IK value [or IK impact resistance level] indicates how impact-resistant a luminaire or certain components are. IK00 offers no protection against external mechanical stress, IK10 or IK10+ means that the luminaire can withstand a 5 or 10 kg test weight from a distance of 40 or 50 cm. Code impact energy in joules corresponds to drop height in mass IK00 no protection IK01 0,14 7 cm - 200 g IK02 0,20 8 cm - 250 g IK03 0,35 14 cm - 250 g IK04 0,50 20 cm - 250 g IK05 0,70 28 cm - 250 g IK06 1,0 40 cm - 250 g IK07 2,0 40 cm - 500 g IK08 5,0 25 cm - 2000 g IK09 10,0 20 cm - 5000 g IK10 20,0 40 cm - 5000 g IK10+ 50,0 50 cm - 10000 g There are eleven codes, corresponding to the impact energy that a enclosure can withstand. [source: wikipedia.org]
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