Prisma Plus G - Schneider Electric

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Additional informationThermal characteristicsThermal management ofswitchboardsChartsQuick calculation charts for internal temperaturesThe indicated internal heat rise is that measured at mid-height in the enclosure.IP3X wall-mounted enclosureIP43 wall-mounted enclosureTest conditions:600 mm wide enclosure mounted directly on wallwithout fixing lugs.Test conditions:600 mm wide enclosure mounted directly on wallwithout fixing lugs.IP3X floor-standing enclosureIP43 floor-standing enclosureTest conditions:600 mm wide enclosure on floor against a wall.Test conditions:Mounted on wall with fixing lugs or on mountinguprights.IP55 wall-mounted and floor-standing enclosuresDD382436DD382434DD382435DD382432DD382433Test conditions:600 mm wide enclosure mounted directly on wallwithout fixing lugs or mounting uprights.164
Additional informationThermal characteristicsThermal management ofswitchboardsVentilationSwitchboard ventilationThe air enters the lower section via the fans and exits the upper section:bbthrough a ventilated roofbbor through a ventilation opening.The air throughput of the fans is determined by the equation:D = 31 × P⎝⎛ - - – KSDT ⎠⎞The chart below can be used to determine the necessary throughput, based on thedissipated power, the difference in temperature (internal - external) and the exposedsurface area of the enclosure.ExampleConsider an IP3X cubicle, 650 mm wide and 400 mm deep, containing components(devices, connections, busbars, etc.) dissipating 1000 W.The ambient temperature around the cubicle is 50 °C.Given that the average temperature at mid-height should not exceed 60 °C, thedifference in temperature DT is equal to 60 - 50 = 10 °C.The exposed surface of the cubicle (non adjacent to a wall or other cubicle) is4.46 m².(back = 1.3 m², front = 1.3 m², roof = 0.26 m², side panels = 1.6 m²).What is the necessary throughput of the ventilation system?The throughput can be calculated as:1000D = 31 × ⎝⎛ - - - -- – 5 5 × 4610⎠⎞D = 234 m 3 /h.In the range of <strong>Prisma</strong> <strong>Plus</strong> accessories, select a system with a throughput of300 m 3 /h.DD381391Calculation dataP : power dissipated by the devices, connections and busbars (in Watts)P r: power of the heating resistor (in Watts)T m: maximum internal temperature in the device zone (in °C)T i: average internal temperature (in °C)T e: average external temperature (in °C)DT m= T mT– eDT = T iT– eS : total free surface area of the enclosure (expressed in m 2 )K : thermal-conduction coefficient of the material (W/m 2 °C)K = 5.5 W/m 2 °C for painted sheet metalD : ventilation throughput (in m 3 /h)Note: The dissipated power of each device is provided by the manufacturer.Add approximately 30 % to account for the connections and the busbars.165
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Prisma Plus GIndexp. 2Determining c
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IndexAlphabetical indexDesignationP
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IndexCatalogue number indexCat. no.
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Prisma Plus:the optimised, tested a
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P System3200 A630 A> Hospitals> Bot
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upgradeable LV switchboards…optim
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Original Manufacturer and Assembly
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IEC 61 439-1 paragraph 11.4Protecti
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PresentationExamples of switchboard
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PresentationExamples of switchboard
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PresentationDetermining catalogue n
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PresentationDetermining catalogue n
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Functional systemContentsPresentati
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Functional systemPresentationThe Pr
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Functional systemFunctional unitsan
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OFFOI ONIONFunctional systemFunctio
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1004060Functional systemFunctional
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Functional systemAccessoriesFront p
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Functional systemAccessoriesFixing
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Functional systemAccessoriesSwitchb
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Functional systemAccessoriesManagem
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Functional systemDistributionPanora
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Functional systemDistributionNon-Ce
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Functional systemDistributionCentra
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Prisma Plus Genclosures
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Prisma Plus G enclosuresIP30, IP31,
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Prisma Plus G enclos
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Prisma Plus G enclosuresIP55 enclos
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Page 116 and 117: Prisma Plus G enclosuresIP55 enclos
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Page 134 and 135: Pack enclosuresAccessoriesDD381819C
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Prisma Plus G - Schneider Electric

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