LED light engines for indoor lighting applications

Transcription

1 LED light engines for indoor lighting applications Zhaga Book 7 Rectangular non-socketable LLE with undefined Light Emitting Surface and Separate ECG

2 What is a LED Light Engine? Mechanical Interface Dimensions (x,y,z), mounting holes Thermal Interface cooling path requirements Electrical/Control Interface LED Light Engine (LLE) = LED Module + Control Gear Photometric Interface lumen output, luminance uniformity, color temperature and CRI Each Zhaga Book is an interface specification: defines what can be observed from the outside of an LLE defines how to verify compliance with all (interface) requirements 2

3 A LED Light Engine can be: integrated or in separate housing A LED Light Engine (LLE) is the combination of an LED module and its associated electronic control gear ( driver ) A LED Light Engine (LLE) can have integrated control gear, or control gear in a separate housing Zhaga s new approach aims to enable independent interchangeability of LED modules and drivers 3

4 Book-7 LED Light Engine Excerpt from Zhaga Book 7 Edition 1.1 Book-7 LED Light Engine: One or more LED Modules One separate Electronic Control Gear ( Driver ) 4

5 How to read the Zhaga Specification? Book 3 The formal requirements for a Book-x product are defined in Book-x. In many cases, Book-x refers to general definitions and requirements in Book-1. Book 2 Book 7 Book 11 Book 1: Common definitions Common requirements Common test descriptions General information For all Zhaga books 5

6 Application: General office lighting 6

7 Key Characteristics of the Mechanical Interface Example Book 7 LED Module Maximum outline Screw hole positions 7 Categories defined in Book-7: Category Length (mm) L6W L28W L28W L28W Width (mm) L28W L56W L56W ECG dimensions: According to Book-1 7

8 Key Characteristics of the Photometric Interface LES is undefined Measurement conditions are defined: - LLE mounting method - Rated mains power - Temperature control Selected set of 17 flux categories 100 lm lm No requirements CCT categories according to ANSI C No special CRI requirements Note: Zhaga is not a performance standard. No minimum requirements for e.g. photometric parameters or efficacy 8

9 Key Characteristics of the Thermal Interface LLE is typically Self-cooling Temperature of the LLE is measured in a test fixture (t p,normal ) LLE has a rated t p,max with guaranteed photometric output. t p,headroom = t p,max t p,normal Test fixture is used to determine t p,headroom The value of the thermal headroom can be used by the Luminaire manufacturer to determine the measures that are required for thermal compatibility: - Thermally tolerant LLEs have a t p,headroom 20 C - Thermally demanding LLEs have a t p,headroom < 20 C 9

10 How to determine if an existing LLE can be exchanged by a new LLE? Verify that the new LLE mechanically fits in the Luminaire (LED Module and ECG) Verify that the new LLE has the desired photometric properties (luminous flux, color temperature CCT & color rendering CRI) Verify that the new LLE thermally fits in the Luminaire: t p,headroom of new LLE t p,headroom of existing LLE 10

11 Interchangeable LED light sources - Book 7 Video clip available at: 11

12 Currently 17 Certified Book-7 products available A few examples: L56W2 OSRAM PrevaLED PLVZ1-LIN DC L28W4 OSRAM PrevaLED PLVZ1-LIN DC L28W6 Philips Fortimo LED Line 1ft 1100lm 840 3R HV1 L28W2 Philips Fortimo LED Strip 1ft 650lm 830 LV2 L56W4 Philips Fortimo LED Line 2ft 2200lm 840 1R HV1 Link to certified products database: 12

13 How to obtain the Zhaga logo? Products must be tested, by an Authorized Test Lab, to verify compliance with the Zhaga Book 7 specification If the product passes all tests, the Authorized Test Lab delivers: A test report A test report summary The manufacturer submits the test report summary to the Zhaga Logo License Administrator The Logo License Administrator certifies the product if the test report summary is correct. The product is published in the Certified Product Database See 13

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15 Independent interchangeability of LED modules and drivers March 2014

16 Full interchangeability Zhaga has decided that it will aim to enable LED modules and LED drivers that are independently interchangeable. This is in addition to Zhaga s stated aim to enable interchangeability of LED light engines (LLEs). For LLEs comprising LED modules and separate drivers, it will become possible to interchange LED modules from different suppliers without also using a different driver, or vice versa. 16

17 Interchangeable LLEs At present, Zhaga interface specifications (Books) define interchangeable LED light engines (LLEs) Some LLEs contain an integrated driver Some LLEs consist of one or more LED modules together with a separate driver 17

18 LLEs with separate drivers Currently, Zhaga does not define the electrical interface between the module(s) and driver In the past, it was believed that defining this interface could limit design innovation for modules and drivers In Zhaga Books, the LLE is treated as a single unit: LED module Cable Driver LED light engine (LLE) 18

19 LLEs with separate drivers current situation Only the entire LLE is interchangeable May not be possible to change the module(s) without also changing the driver, or vice versa LED module Cable Driver Interchangeable LLE LED light engine (LLE) LED module Cable Driver Luminaire body 19

20 Independent interchangeability Zhaga s new approach aims to enable independent interchangeability of LED modules and drivers LED module Driver Interchangeable module Interchangeable driver LED light engine (LLE) LED module Cable Driver Luminaire body 20

21 Zhaga recognizes need for change Zhaga is responding to the market need for modules and drivers that are independently interchangeable. Future editions of Zhaga Books will, where appropriate, reference relevant specifications that define the module-driver electrical interface. In the four years since Zhaga was formed, technical solutions have emerged that make it possible to define module-driver interfaces for specific application segments without limiting the innovation in LED module and driver technology. 21

22 Enabling full interchangeability Zhaga interface LED module Luminaire body Cable Zhaga interface Driver Current situation: Zhaga does NOT define the electrical interface between the LED module(s) and driver. Only the entire LLE is interchangeable. LED light engine (LLE) Future situation: Defining the module-driver electrical interface will mean that modules and drivers are independently interchangeable. Zhaga interface LED module Luminaire body Zhaga interface Driver New interface 22

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