LED DRIVER FAILING

[trai]

Hi,
I work at a lighting company as a design engineer and recently we had failures of LED drivers onsite. Almost 15 LED drivers failed in 2 months but not all at the same time. At first 5 failed then in 10day another 3 failed and so on. We suspect that there are more drivers to follow.

The driver we used was an AC Electronic Ballast driven at 1050mA.

LED that we used was XP-G Cree with 7 of them in series on a board.

Can anyone help me in determining the cause for driver failure.

All fixtures are indoor rated controlled by occupancy sensor.

Specs for LED driver and LED are attached.

 

[MacGyverS2000]

The LED stopped working.

This is the symptom, but it is not the why. You need to crack one (or more) of these open and determine what the actual failure mode is. If you can't do that and you can't monitor the power lines in realtime, you will always be guessing as to the real cause.

Dan - Owner

http://www.Hi-TecDesigns.com

 

[VEBill]

"Crack one open"

OP, being Industrial not Electrical, might not have the electronics skill set to analyze the failure mode of the internal electronics. If so, returning them to the OEM and waiting for results is a reasonable (perhaps only?) option.

In the meantime, might be worth at least researching power line filtering options. Be a step ahead when the most likely answer comes back. Also, research powee line monitoring equipment, rental options. Also, look into other suppliers of drivers/ballasts. Plenty to do...