www.suvegelectronics.com led revolution in lighting - kartik bakeri suveg electronics synergy for...
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www.suvegelectronics.com
LED Revolution in Lighting
- Kartik Bakeri
Suveg Electronics
SYNERGY FOR ENERGY 2012
ACON
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Company Profile ACON Suveg Electronics, part of Bakeri Group
is an ISO 9001:2008 certified company, established in 1985
We deliver market-leading products with improved energy conservation, distinctive styling & accustomed to hostile environmental conditions
Many of our innovations are patented & designed to give maximum light output along with enhanced energy saving
Testing carried out at UL, & ERDA, as per International StandardsACON www.suvegelectronics.com
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LED Revolution in Lighting
-This presentation endeavors to give a fundamental outlook on why, where, where not and what’s of LED in the world of lighting.
- LED lighting for general illumination
- Where to use LED - Efficiency, cost economics and maintenance required
- How to select the right LED luminaire?
- Knowledge of LM 79, LM 80 EMI/EMC standards and certain thermal aspects
- Verification after installation whether the luminary has been delivered as per the specifications promised
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Application
Efficacy, Cost, Cost of Electricity generation, Life, Maintenance, warrantee as compared to other efficient light sources such as T5, CFL, sodium vapour, induction lamp, etc.
Use of lenses increases the usable efficiency
So, application in street lights, industrial high bay, solar, table lamps, work bench, sign boards/hoardings, and other task lighting
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Main Contents of LED fixture
LED/s
MPCB for the LED/s
Heat Sinking Housing
Optics and/or toughened glass cover
Driver/s (Electronic circuit) – the heart
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Standards & Compliance Apart from the general standards
like Ingress protection, etc.
Specially applicable to LED luminaries : IS 1610X/LM79 and EMC standards
LM79 : Luminous characteristics
EMC : Compliance to electromagnetic standards
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IESNA –LM-79-2008
Power consumption
Luminous Flux (Lumen)
System Efficacy : Lumen/Watt :- 70-80 lm/W is practical at present
Power Factor : Preferably greater than 0.98
Field angle and Beam angle
CCT & CRI
Photometry
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Correlated Colour Temperature (CCT) & Colour Rendering Index
(CRI)
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CCT : 4000 to 6500 preferable for general illumination
CRI : preferably > 70
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Asymmetric batwing pattern – Street Light
An ideal Polar Curve for the street light
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Corresponding Light Intensity Data
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Source: UL Report No. 6012-001708-01-01- ACON SL_90W
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Road with Angular diagram
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¥ = 60°C = 0°
¥ = 30°C = 0°
¥ = 60° C = 90°
¥ = 60° C = 70°
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IES file : whether matching IS1944
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9 Point Method : A practical approach
Avg Lux= (A+B+C+D)/16 + (E+F+G+H)/8 + J/4
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A
E
B
C
G
D
F
J
H
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Case Study 9 Point Calculation
ACON 65W LED Street Light
Road Width: 15m, Height: 8.5m, Spacing: 30m, Angle: 15 Deg
Points
A B C
1 24 15 24
2 18 15 18
3 13 8 13
Avg Lux 16
Uo 0.51
Min/ Max
> 33%
150W HPSV
Road Width: 15m, Height: 8.5m, Spacing: 30m, Angle: 15 Deg
Points A B C
1 30 5 30
2 25 5 25
3 11 4 11
Avg Lux < 15
Uo < 0.4
Min / Max
< 33%
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EMC
Harmonics Emission Immunity
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Conducted Radiated
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EMC : Supply Current THD < 10% Supply Current total Harmonics
Distortion should be < 10%
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THD < 10% with low conducted Emission
THD < 30% with high conducted Emission
Supply Current Waveforms
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Quasi-peak & Average Limits and obtained Average at mains terminals
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EMC Emission : EN 55015 limits
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Immunity as per IEC 61547 Injected current (common mode
radio frequency)
Fast transient (5/50 ns pulses)
Radio frequency Electromagnetic field
Surge Test (1.2/50 µsec)
ESD (Electrostatic Discharge)ACON www.suvegelectronics.com
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IESNA-LM-80
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LED tested @ Tj=25º C
V/s
Tj=85º C
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SummaryTest Reports LM 79 for photometric data THD < 10% Conducted & Radiated Emission as per
EN 55015 Immunity as per IEC 61547 LM 80 test for LEDs at Tj =85º C
Physical Verification Supply Current Waveform for THD &
Conducted Emission Consumption & Power Factor 9 Point Avg Lux measurement
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