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Upgrade of public lighting in Blanzac-lès-Matha
Blanzac-lès-Matha, France

  • project Relamping, Blanzac-lès-Matha
  • client Municipality of Blanzac-lès-Matha, SDEER 17
  • electrical installation Eiffage
  • photographer Jean-Baptiste Guerlesquin, Shoootin
  • Representation Selux France

The town of Blan­zac-lès-Matha in the French depart­ment of Char­ente-Mar­itime has mod­ernised its public light­ing by replac­ing the old light sources with LED mod­ules while still retain­ing its tried-and-tested exte­rior Histo lumi­naires by Selux.

To save energy and improve light­ing qual­ity, the town’s exist­ing Histo lumi­naires by Selux were replaced using LED upgrade kits. Not only are the new illu­mi­nants much more effi­cient, they also guar­an­tee out­stand­ing visual com­fort.

Power con­sump­tion – Com­par­i­son before and after upgrade

Sit­u­a­tion before the upgrade:
137 Histo 550 lumi­naires are installed in the town equipped with 100 W high-pres­sure sodium lamps. A 100 W high-pres­sure sodium lamp con­sumes approx. 114 W along with its bal­last. The lights are in oper­a­tion the whole night and accord­ingly illu­mi­nate the munic­i­pal­ity for 4300 hours per year. This cor­re­sponds to an annual power con­sump­tion of 67,157 kWh.

Sit­u­a­tion after the upgrade:
56 Histo 550 lumi­naires have been equipped with a 72 W LED upgrade kit and 81 Histo 550 lumi­naires with a 46 W-LED upgrade kit. The lumi­naires are lit the entire night, thus illu­mi­nat­ing the town for 4300 hours per year. This results in an annual elec­tric­ity con­sump­tion of 33,359 kWh, which

con­sti­tutes a saving of 50 per­cent over­all.

Costs can also be saved on main­te­nance since the LED module has a much longer ser­vice life than a high-pres­sure sodium lamp, which has an aver­age life of 25,000 hours.

Com­par­i­son of light qual­ity before and after the upgrade

Sit­u­a­tion before the upgrade:
Colour repro­duc­tion index (R_a = 25) of the orange-coloured light of the high-pres­sure sodium lamps is poor, which means colours appear dif­fer­ent than in day­light. The light daz­zles because the lumi­naire scat­ters it in all direc­tions.

Sit­u­a­tion after the upgrade:
Much better colour repro­duc­tion (R_a > 70) is attained with the white LED light (3000 K). Lumi­nous inten­sity is con­fig­ured accord­ing to the applic­a­ble reg­u­la­tions and stan­dards. Direct glare is also very low and light is directed with high pre­ci­sion. As a result the upgraded lumi­naires reduce light pol­lu­tion while at the same time pro­tect­ing flora and fauna.

  • A contemporary adaptation of a classic fitting for today's sustainable environmental demands. The curved bracket design of Histo enables use in traffic-calmed zones, access roads, pedestrian precincts and public parks. When the Histo is illuminated, its diffuser also becomes luminous, radiating a pleasant glare-free glow. A wide selection of poles and brackets are available for several heights and varying degrees of planning flexibility.

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