Download - Chapter 15 Lighting Fundamentals
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Session15 IECLightingFundamentals
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IlluminationLevels Example
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IlluminationLevels (Cont.)
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LightingSourcesintheIECWorld
Incandescent: 40C(40F)
Fluorescent: 20C(4F)minimumstartingtemp.
Luminousintensit lessthan10%@ 20C
LowtemperatureLampsprovide 40C(40F)
InductiveLamp:80C instantlightwith100,000hr.lamplife
Availablein55,85and125wattunits
HighPressureSodium: 50C(58F) Fullluminousintensityovertemperaturerange
DualArcTubeversionsinstantlightwhenpowerisreapplied
extremelylongratedlifeupto55,000hours
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WhysomuchuseofFluorescentlighting
intheIECworld
HIDLamptechnologymuchbetterinUSthanEurope
Lowermountingheightsduetospacerestrictions&limitationsin
Europevs.US
IntermediateTratingissue
EnclosedandCasketednotapprovedprotection Zone2onlyrecentlyexpandedandproductsapproved
ExnRrecentlyintroduced
Qualityoflightissues
LoweroverallLuxrequirements
Better
technology
with
Fluorescents
(
30
C
ratings)
Italladdsuptomorefluorescents
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LumenoutputofTraditionalFluorescent
.
Traditional fluorescents rovide little or no li ht at ambients below 15C where s ecialized lam s can
providebetterilluminationatcoldertemperatures.
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Typicallightinginstallations
Theuseoffluorescentlamptechnologyevenforhighmountingrequirementsisfairly
commonintheEuropeanmarket. Longlifefluorescentlampswithlamplifeupto
80,000hoursistypicallyusedinareaswherequalityoflightandaccessibilityis
important
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SupportSystemsInstallation
Lighting
Examples
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Typicallightinginstallations
reductionofglarewithHIDlightsources
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Typicallightinginstallations
CommonuseofHIDlightingistouseareflectorlampforhighmounting
applications
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Typicallightinginstallations
Althou hnotasfre uentl usedtoda stillsomeoffshoredesi nswithhi hwatta eHID
lightfixturesuseremoteballastsforeaseofmaintenanceandtoprolongtheballastlife.
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Typicallightinginstallations
practice. TheHIDlightingshowninthepictureisratedZone2whilethefluorescentbulkhead
fixturesbelowareratedZone1.
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Typicallightinginstallations
installations. Bothproductsaresuitablebuteachhaveadvantagesanddisadvantages.