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Advancements in LED Technology

Advancements in LED (Light Emitting Diode) technology have made this source an attractive alternative to traditional light

sources in a variety of applications. One such application is outdoor xtures. This segment includes roadway and decorative

street lighting, as well as general area lighting traditionally occupied by discharge light sources. In comparison to historic

technologies (such as high pressure sodium and metal halide), today’s outdoor LED lighting xtures can provide signicant

energy savings over their useful life.

Another advantage is the long lifetime of today’s LED fixtures.

Overall system reliability is comprised of several key subsystems

and their components: the electrical subsystem, the optical

subsystem and the outer enclosure. A simplied block diagram

is shown below as an example to illustrate the relationship

between these subsystems and their corresponding components.

This paper addresses the reliability of GE’s outdoor LED lighting

systems through examples of rigorous testing and reliability

modeling, resulting from GE’s deep technical experience as one

of the world’s largest LED systems companies.

Figure 1: Simplied block diagram of outdoor LED system

Electrical Subsystem

Driver

PCB LEDs

Fuses Lens

TVSS Reector

Control System

Optical Subsystem

Figure 2: Open view of roadway fixture

Wiring/Interconnects

Mounting Subsystem

Mechanical Enclosure & Finish Subsystem

Seals/Gaskets

1 2 3 4 5 6

Résumé du contenu

Page 1 - Control System

Advancements in LED TechnologyAdvancements in LED (Light Emitting Diode) technology have made this source an attractive alternative to traditional lig

Page 2 - Reliability denitions

Reliability denitionsThe reliability bathtub curve is often used to depict the expected failure rate of a family of products over time. This model i

Page 3 - GE reliability philosophy

GE reliability philosophyAt GE, the Design for Reliability (DFR) process is key to any product’s development cycle. For this reason, GE maintains a co

Page 4 - Electronic drivers

GE reliability testingAs already stated, there are several key contributors to outdoor LED system reliability. Each of these contributing factors is s

Page 5 - Mechanical enclosure

DME (Design Margin Evaluation) is a qualitative reliability tool that measures the margin between design strength of a unit and key environmental stre

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GE ERX1 Livre blanc

Naviguer en ligne ou télécharger Livre blanc pour Protecteurs de surtension GE ERX1. GE ERX1 Whitepapers Manuel d'utilisatio

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