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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.