SPARKS October_2016

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SPARKS
ELECTRICAL NEWS OCTOBER 2016
ight is Flexib
ULTRAFLAT DALI LED DRIVERS FOR ULTRAFLAT LUMINAIRES
The new 35 and 75 W OTi DALI LED drivers
stand out due to their ultra-flat design – just
11 mm – and retain the excellent thermal
characteristics of the 21 mm high OTi DALI driv-
ers says OSRAM’s Eric Hall. “They can be dimmed
down to 1% of their luminous intensity, comply with
the upcoming DALI Ed.2 standard and can be pro-
grammed via the DALI interface or even wirelessly
via an NFC interface,” he explains. In addition to
their large output current range, they provide an
efficiency of > 92%, low standby <0.25 W, a ser-
vice life of up to 100 000 h/Tc-10 K, and bear
the EL mark. Typical applications include ultra-
flat standing luminaires, suspended luminaires as
well as surface-mounted ceiling fixtures in office,
hospitality and healthcare applications, says Hall,
adding that design-in examples and first pilot
systems are available and that the ultra-flat light/
presence sensors will be available soon.
Product benefits
• Ultra-flat housing (11 mm height) for innovative
luminaire designs and applications.
• Easy and fast wireless luminaire programming.
• Versatile DALI window driver for up to 75 W out-
put with flexible characteristic.
• Very high efficiency and reliability.
• Protection of the system thanks to thermal man-
agement and smart control.
• Higher quality of light due to low output ripple
current.
Versatile scope of application due to OSRAM
DALI technology
• Easy to use in corridors and restrooms because
of three-level corridor function.
• Touch dim application that is easy to control via
pushbutton or sensor.
• Energy efficient touch dim operation due to auto-
matic switch-off at sufficient residual light.
• Suitable for emergency Installations (comply
with EN 60598-2-22 and IEC 61347-2-13,
Appendix J) due to dc detection (0 Hz, pulsating
dc), on/off switchable.
• Feedback of power consumption and operating
hours (fit for smart grid).
• Suitable for buildings according to EPBD/
BREEAM/LEED due to automatic constant lu-
men output setting.
Areas of application
• Ideal for use in applications and luminaires
with slim design.
• Floor-standing, pendant and surface-
mounted luminaires, and LED panels.
• Installation in emergency lighting systems
according to IEC 61347-2-13, Appendix J.
• Suitable for use in luminaires with flexible
current setting (DALI, CLO, LEDset).
• Suitable for luminaires of protection Class I.
Product features
• Supply voltage: 220...240 V.
• Line frequency: 0 Hz, 50...60 Hz.
• Line voltage: 198...264 V.
• Safety according to EN 61347-1, 61347-2-3,
61347-2-13, 62384.
• RI suppression according to EN
55015:2007+A1:2007/CDN.
• Line harmonics according to EN 61000-3-2.
• Immunity according to EN 61547.
• Lifetime: up to 100 000 h (temperature at Tc
= 65 °C, max. 10% failure rate).
Enquiries: +27 010 221 4000
‘CLEVER’ PRODUCT
SPECIFICATION AT
VAAL MALL
Cove lighting in shopping centres can, at the
best of times, be an incredible challenge,
says Cape Town-based LED Lighting’s
national sales and marketing manager, Shawn
Godfrey. “But, at the end of 2015, RWP Engineer-
ing Consultants presented LED Lighting with a
task that ensured we put our best foot forward.”
“Aftermore thannine large scale shoppingcentres,
one would expect this to be just another request,
but there were some interesting challenges,” says
Godfrey. “The requirement set out was to gain a set
lux level while reducing the direct lighting proportion
to almost zero. This poses amassive challengewhen
reflecting light off a ceiling as the proportion of lost
light is very high. However, through clever product
specification and engineering, a solution was found
that matched the client’s brief,” he explains.
Lighting objectives
“The main objective was to drastically increase
lighting levels throughout the mall while reducing
the required maintenance and overall wattage of
the installation – and this all had to be achieved
whilst still utilising the same lighting positions of
the original lighting design. Another important cli-
ent request was to have an even wash over the
ceilings with no dark patches between installed
fittings,” explains Godfrey.
Lighting solutions
He says that originally, a FRT5 linear plug-and-
play rigid cove solution was specified. “While this
was the correct product, adjustments needed to
be made in order to meet the brief. The problem
brought forward to the engineering team was that
the standard strip wattage and lumen package
was not achieving the average lux required by the
customer,” he says, adding that, “through careful
high lumen LED selection, the FRT5 light engines
were produced specifically for the Vaal Mall shop-
ping centre.”
Enquiries: +27 21 510 0028
LIGHTING
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