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LED Revolution in Lighting

- Kartik Bakeri

Suveg Electronics

SYNERGY FOR ENERGY 2012

ACON

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

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

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

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

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

Road with Angular diagram

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¥ = 60°C = 0°

¥ = 30°C = 0°

¥ = 60° C = 90°

¥ = 60° C = 70°

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

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%

EMC

Harmonics Emission Immunity

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Conducted Radiated

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

Quasi-peak & Average Limits and obtained Average at mains terminals

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EMC Emission : EN 55015 limits

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

IESNA-LM-80

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LED tested @ Tj=25º C

V/s

Tj=85º C

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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Thank You! Email: marketing@suvegelectronics.com

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