LED lamps and fixtures

See also "Lighting circuits" for more details

A lamp or luminaire with LED technology is powered by a driver:

• can be integrated into the bulb (tube or lamp for retrofit) : in this case refer to the power indicated on the lamp
• if separated : in that case it is necessary to take into account the power dissipated in the driver and the power indicated for one or several associated LED modules.

This technology has a very short start-up time. On the other hand, the inrush current at the powering is generally much higher than for fluorescent lamp with electronic ballast.

Note: The power in Watts indicated on the LED module with a separated driver doesn’t include the power dissipated in the driver.

Power demand (W) at 230 V	Power factor	Starting			Luminous efficiency (lumens per watt)	Average timelife	Utilization
		Inrush current Ip/In	Inrush current time (microsec)	Full Time to start
3 to 400 W	> 0.9	Up to 250	< 250 microsec	< 0.5 to 1 sec	100 to 140	20000 to 50000	All lighting applications in all domains (housing,commercial and industrial building, infrastructure)

Fig. A8b: Main characteristics of LED lamps & fixtures