... | ... | @@ -4,36 +4,65 @@ Power supply unit for emergency lamps that may need to be used in areas |
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with radiation. The power supply consists of a transformer, a diode
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bridge, capacitors and an optional voltage stabilisation device. It
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converts a 207V to 253V 50Hz AC to a stable DC voltage and current, as
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required by the LED load.
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*TEMPLATE TEXT BELOW. PLEASE
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MODIFY**
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required by the LED
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load.
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![](/uploads/d8e4de2a1cbaa74242c7fb12729d1afe/smallpsuinbox.jpg)
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## Functional specifications
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## Block diagram
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Technical Requirements:
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Input Voltage: 230V AC RMS
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Voltage Tolerance: +/-10%
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Input Frequency: 50Hz
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Frequency Tolerance: +/- 0.5Hz
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Maximum power: 7W (measured at input terminals)
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Voltage Output: As LED requirements
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Current Output: As LED requirements
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Earthing Regime: IT
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Relevant standards to be observed: IEC 61000-3-2, EN 55015, EN 50082-1,
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EN 50082-2
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Whilst the standard conditions of the electrical network dictate 230V AC
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with a margin of +/-10, due to cabling constraints within radiation
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exposed areas it would be considered advantageous should the supply
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continue to operate below the -10 threshold. Please note that compliance
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with the standards requires the power supply to be installed within a
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suitable enclosure, it is assumed this will be the responsibility of
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those manufacturing the power supply and integrating it within their
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existing products.
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The power supply shall consist of a transformer, a diode bridge,
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capacitor(s) and optional voltage stabilisation device. It shall convert
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50Hz AC voltages from 207V RMS to 253V RMS to a stable DC voltage, as
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required by the LED load. The power supply shall be designed to supply
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the current requirements of the connected LED
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load.
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## Block diagram
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![](/uploads/403ba0af326e31369466680d4334c34c/blockdiagpsu.jpg)
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-----
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## Project information
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- [Software](Software)
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- [Frequently Asked Questions](FAQ)
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- [Frequently Asked
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Questions](FAQ)
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- [Users](Users)
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-----
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## Contacts
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### Commercial producers
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### Commercial producers
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Luminaires based on earlier versions of this design (using the same principles) are currerntly produced by the following companies:
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Comatelec (FR) \[http://www.schreder.com/frc-fr/Pages/default.aspx\]
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Thorlux (UK) \[http://www.thorlux.com/\]
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### Project
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### Project Development
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- [James Devine](mailto:jdevine@cern.ch) - CERN - General question
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about project
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- Jean Marie Foray - CERN - Engineer
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- Jean Marie Foray - CERN - Engineer 2(009-2014)
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-----
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... | ... | @@ -47,7 +76,19 @@ MODIFY** |
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</tr>
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<tr class="even">
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<td>27-05-2011</td>
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<td>...</td>
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<td>Initial testing of commerical prototypes for LED emergency lighting in radiation environment</td>
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</tr>
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<tr class="odd">
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<td>04-07-2011</td>
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<td>Development of technical solution following test outcomes</td>
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</tr>
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<tr class="even">
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<td>05-03-2012</td>
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<td>Production and test of solutions based on design principles by Thorlux & Comatelec</td>
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</tr>
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<tr class="odd">
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<td>05-03-2012</td>
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<td>Production and test of solutions based on design principles by Thorlux & Comatelec</td>
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</tr>
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</tbody>
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</table>
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... | ... | |