Well, I won't go so far as to say that they are a racket, but....... they are not a non-profit organization. They have a bad reputation because of their poor customer service, yet if you pay them extra money for expedited testing you can still get the testing you need completed on schedule.
Some engineer colleagues of mine say that UL is a racket. They have toured some of their facilities, and found their practices and testing areas to be very unprofessional and ineffective. Once a company set out to protect consumers, now is just a company to absorb as much money as they can.
After hearing the stories, I have to pause and question any UL standard.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.