LED derating

[studentspark]

Is there a standard derating factor for LED lighting.
Im a bit confused how many LED lights dimmers can handle.

For example

Lutron suggest that a 10 Watt led should be treated like a 100w incandescent
So a 600w dimmer can only safely manage 6, 10-20 watt lamps ( The jump from 10 to 20 w seems quite a big jump)

THE 10 % rule

That sounds like a very low amount of lamps.

Varilight say

Options of 120W or 300W (Up to 10 or 30 lamps)

No wattage of lamps given!

Zano say

0-150W or 5-250W
Not limited to 10 lamps

(no indication of lamp wattage or number of lamps

When I asked they said to use 'Regulation guidance of 1.8'
Which I presume to be the derating for inductive loads such as fluorescent lights.

Many thanks

 

[ericmark]

Since there are many ways to regulate the current supply to an LED, there must be a variety of limits depending on method used. So we have.
1) A capacitor with leak resistors.
2) A simple transformer.
3) A switch mode power supply.
So the load could be capacitive, or inductive and today the same applies with fluorescent lamps, although traditionally inductive, today most are switch mode of some type.

So you buy a LED bulb and you read the packet, and about the only info it gives is if dim-able or not, in fact they only have to say if not.