Frequently Asked Questions (FAQs)

Do you know everything you need to know about Zhaga? To make sure you do, we have compiled a list of frequently asked questions (FAQs).

A small selection of FAQs are shown below, and the complete list can be downloaded via the link at right.

If you have further questions, please use our Contact Form.

Definition of LED light engine

Zhaga uses the term ‘LED light engine’ to describe the combination of one electronic control gear (ECG) and one or more LED modules as defined in Zhaga industry specifications.

Definition of LED module

An LED module is a unit supplied as a light source. In addition to one or more LEDs it may contain further components, e.g. optical, mechanical, electrical, and electronic components, but excluding the control gear.

Definition of electronic control gear or so-called driver

An electronic control gear (ECG) or driver is a unit that is located between the power supply and one or more LED modules to provide the LED module(s) with an appropriate voltage or current. It may consist of one or more separate components, and may include additional functionalities, such as means for dimming, power factor correction, and radio interference suppression.

Who is Zhaga?

Zhaga is a global consortium of companies from the lighting industry and beyond, founded in February 2010.

What does the word Zhaga stand for?

The word Zhaga has no intended meaning. It is a waterfall in Sichuan. The Zhaga logo stands for interchangeable LED light sources.

Who initiated the Zhaga consortium?

Zhaga started with broad support from the lighting industry. Twenty-two companies participated in the first meeting of the Zhaga consortium in March 2010. By the end of 2012, more than 280 companies had joined Zhaga.

How does Zhaga ensure the interchangeability of LED light sources?

Zhaga develops specifications that, when applied, ensure interchangeability. Therefore Zhaga focuses on the mechanical and thermal fit of the heat sink, the size and height of the light emitting surface as well as its photometric properties regarding different application areas.
Zhaga does not specify the performance, quality, design or safety aspects of LED light sources as these characteristics are for each LED light source manufacturer to decide for themselves, based on the particular technology chosen and market approach. They are not specifically related to interchangeability.

Does Zhaga also specify the connection between LED modules and electronic control gear/driver?

No, Zhaga does not and will not specify the interface between electronic control gear and LED modules. This interface is rapidly evolving and not stable.

Will manufacturers have to use the Zhaga specifications in the future?

No, the use of Zhaga specifications is voluntary and not mandated by any government or regulator.