An Overview of ZHAGA.

Zhaga Consortium for the specification of interchangeable LED light engines An Introduction Greg Galluccio Director, LED Business Development Leviton Manufacturing Co.

Zhaga – LED Light Engine Interface Specifications

Mission Starting point: – LED lighting serves the lighting market by better and more efficient lighting solutions.

Zhaga role: – Zhaga speedily defines interchangeable LED light engines for all applications in general lighting through specifying their interfaces and enabling identification of Zhaga compliant products.

Zhaga benefits: – Stable design platforms for luminaire makers – Future proof light engines which can be second sourced and upgraded

Zhaga market impact: – Zhaga creates market confidence in LED lighting solutions which stimulates the growth of the application of LEDs

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Zhaga – LED Light Engine Interface Specifications

Interchangeable light sources • The lighting industry is used to working with standardized light sources – E27, G5, G9, …

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Zhaga – LED Light Engine Interface Specifications

LED light sources are not interchangeable today • Most LED light sources are not interchangeable, until now.

• Typical differences are: – – – –

fit with heat sink (2, 3, or 4 screws) size of the heat sink size of the light emitting surface height of the light emitting surface

• Problem: – Change LED => Change heat sink & reflector in luminaire 18 March 2013

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Zhaga – LED Light Engine Interface Specifications

Zhaga: interchangeable LED light sources • Zhaga will make LED light sources interchangeable • The main parameters are: – – – –

Mechanical and thermal fit with the heat sink Size of the light emitting surface Height of the light emitting surface Photometric properties of the light emitting surface

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Zhaga – LED Light Engine Interface Specifications

What is an LED light engine?

• An LED light engine is the combination of an LED module and its associated electronic control gear (‘driver’).

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Zhaga – LED Light Engine Interface Specifications

Control gear integrated or in separate housing • An LED light engine can have integrated control gear, or control gear in a separate housing LED Light Engine

LED Light Engine

LED module Control Gear

integrated control gear

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Control Gear

cable

LED Module

control gear in separate housing

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Zhaga – LED Light Engine Interface Specifications

Interface specifications promote innovation • Zhaga specifies only what is necessary to enable the interchangeability of light engines from different manufacturers.

• The design freedom inside the light engines and in the luminaires is maximized.

mechanical interface

thermal interface

electrical interface

LED light engine

Zhaga treats the inside of a light engine as a ‘black box’

photometric interface

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Zhaga – LED Light Engine Interface Specifications

The interfaces of a light engine 1. Mechanical Interface related to dimensions

incl. “socket”

2. Photometrical Interface related for example to lumen

output, color, light distribution

3. Thermal Interface related for example to thermal

resistance, heat dissipation

4. Electrical Interface related to Power and

(AC or DC), insulation, earth

Controls (by reference to existing specifications)

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Zhaga – LED Light Engine Interface Specifications

Design freedom • The interface specification maximizes the design freedom inside the light engines and in the luminaires – See, for example, the design freedom for a socketable light engine with integrated control gear: Zhaga specification

Freedom in luminaire

Freedom in Light Engine

Mechanical: base defined, line voltage contacts, outer max dimensions

Design of lamp holder.

Reflector fixation

alignment aids for reflector

Thermal: Method for characterization of LLE and luminaire

Shape and size of the heat sink.

Active cooling / convection

Junction temperature Internal thermal resistance Thermal derating

Photometric: light distribution Categories of lumen output , CRI, and colour temperatures

Reflector design, glare

Lumen output, CRI, colour temperature

Quality and performance: Nothing specified

Application efficacy.

Life time, color stability, LLE efficacy

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Zhaga – LED Light Engine Interface Specifications

Zhaga will create many light engine specifications Many possible light engine variants within the Zhaga family

Different lighting applications need different light engines 18 March 2013

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Zhaga – LED Light Engine Interface Specifications

Use of Zhaga specifications is voluntary Possible Light Engine variants within the Zhaga family

Catalogue Company C

Catalogue Company A Catalogue Company B

Companies can choose which specifications they use 18 March 2013

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Zhaga – LED Light Engine Interface Specifications

Out of scope: performance, quality, safety Government regulations Quality labels

Zhaga

• safety • life time • energy efficiency • color stability

• mechanical fit • light distribution • thermal behavior • electrical interface

Companies • product specifications • data sheet

Safety Interchangeability

Quality Performance

Detailed product properties

Zhaga specifies only a small part of the product properties 18 March 2013

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Zhaga – LED Light Engine Interface Specifications

Zhaga • Zhaga is a consortium of industry players that creates – Standardised interfaces for LED Light engines to secure a stable design platform for luminaire designers and manufacturers

• Zhaga is an industry-wide co-operation: – LED light engine manufacturers – LED luminaire manufacturers – Components additionally necessary (heat sinks, optics….)

• Zhaga is an open co-operation – open to any company that subscribes to the vision/mission and is willing to contribute to the success

• Zhaga is a global co-operation – Zhaga is a co-operation of companies from all regions – Zhaga will set global standards

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Zhaga – LED Light Engine Interface Specifications

Speed • Zhaga will move fast.

– The industry needs light engine standards now.

• Zhaga will establish its standards first as an industry standard • Zhaga will offer the finished standards to an SDO*, such as IEC, for formal standardization.

* Standard Development Organization

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Zhaga – LED Light Engine Interface Specifications

Enable alternative implementations • Whenever practically possible, the Zhaga consortium will set interface standards that allow more than one implementation of the light engine – margins and tolerances should be broad – interface specifications should not imply a single technical solution

• This should prevent that only a single company can manufacture a Zhaga-compliant light engine

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Zhaga – LED Light Engine Interface Specifications

Certification, Compliance, Logo and Fees • Zhaga will establish methods for certifying that: – LED light engines comply with the standard, – complementary components comply with the standard.

• Only certified products are allowed to carry the Zhaga logo and name of the standard

• Certification will be done by independent test labs • Zhaga members pay an annual membership fee – Membership fees are used for the organization of meetings, publicity, promotion of the standard and to monitor certification

• Members participating in standardization activities carry their own costs (travel, salary cost, prototyping, measurements etc.)

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Zhaga – LED Light Engine Interface Specifications

The Zhaga logo • Members may use the Zhaga Logo on products that implement a Zhaga specification

• Compliance with the Zhaga specification must be verified by an independent test lab.

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Zhaga – LED Light Engine Interface Specifications

Patents and royalties •

Royalty-free licenses for all patents that are necessary to implement the interface standards developed by the consortium.

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Zhaga – LED Light Engine Interface Specifications

Organization • Steering Group – Elected by the General Assembly – Determines the rules, regulations

– Takes the initiative to start, or stop, work on new light engine standards – Defines the assignment (charter) of work groups – Appoints chair, and vice-chair persons of work groups – Approves standards created by work groups

• Work Groups – Technical Coordination Work Group • responsible for consistency between deliverables of all technical work groups

– Promotion Work Group • takes care of Zhaga web site, press contacts, newsletters, etc.

– Specification Work Groups • drafting Zhaga Books on the interfaces of specific Light Engines.

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Zhaga – LED Light Engine Interface Specifications General Assembly • Meeting of all associate members and regular members.

• Only regular members have voting rights • Appoints the Secretary General and Steering Committee

General Assembly

Secretary General

Financial Administrator (IEEE-ISTO)

Steering Committee

Technical Coordination Work Group

Promotion Work Group

Logo Licensing Work Group

Work Group 1

Work Group ..

Work Group ..

Task Force 1

Task Force ..

Task Force ..

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Zhaga – LED Light Engine Interface Specifications Work Groups • Established by the Steering Committee • Develop and maintain the interface specification for a single light engine type.

General Assembly

Secretary General

Financial Administrator (IEEE-ISTO)

Steering Committee

Promotion Work Group Technical Coordination Work Group

Task Force 1

Task Force ..

Work Group 1

Zhaga has 7 active work groups:

Logo Licensing Work Group

Work Group ..

•

WG 1: socketable downlight with integrated control gear

•

WG 2: Spot light engine with separate control gear

•

WG 3: Flat emitter street lighting engine with separate control gear

•

WG 4: Socketable spot light LLE with separate control gear

•

WG 5: Compact socketable LLE with integrated control gear

•

WG 6: Mechanical interface of electronic control gear

•

WG 7: Indoor LLE with separate control gear

Work Group ..

Task Force ..

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Zhaga – LED Light Engine Interface Specifications

Zhaga Specifications Overview Book 1: General

Book 2: Socketable LLE with integrated ECG

Book 3 : Spot LLE with separated ECG

Status: finalized Dec 2011

Status: finalized Dec 2011

Book 4: Street Light Engine

Book 5 : Socketable LLE with separate ECG

Book 6: Socketable LLE with integrated ECG

Status: in preparation

Status: finalized September 2011

Status: finalized Dec 2011

- Definitions - principles - ECG dimensions Status: finalized Dec 2011

Book 7: Office LLE with separate ECG Status: in preparation Feb. 2012

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