The reason I asked this question is because a company I have been
consulting with for the last 4 months, has this week successfully had their
80 kWh energy storage system reviewed and tested for a UL 9540 listing.
This a startup company and they achieved first pass certification of their
product. A
Amusing indeed.
I have a few private answers about companies who have succeeded, but I
suspect that many new products that passed first time were mainly variants
of exisiting product lines. My question was about new product introductions.
I am know several design engineers who have learned by way
Dear Doug,
Very interesting question and I would like to know it as well. Suggest to
go to the testing lab for the answer. They should have the statistics in
their business.
Would you mind sharing why you want to know it, what for? Although I do
not have the figures I am aware of the answers w
Amusing anecdotes so far, but no answers for Doug yet.
Over the years in a time long ago (retired for a few years now) I gained much
success with first time submissions with experience (relationships with labs &
agencies were also important for this).
The big continuing annoyance was with produ
Well said!
From: rwell...@wellman.com
Sent: 25 June 2021 21:49
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Friday question
A man in a hot air balloon realized he was lost. He reduced altitude and
spotted a woman below. He descended a bit more and shouted, "Excuse me, can you
help
A man in a hot air balloon realized he was lost. He reduced altitude and
spotted a woman below. He descended a bit more and shouted, "Excuse me, can you
help me? I promised a friend I would meet him an hour ago, but I don't know
where I am."
The woman below replied, "You're in a hot air ball
https://www.linkedin.com/pulse/ship-repair-man-story-why-experts-get-paid-more-faiz-noor/
A giant ship engine failed. The ship’s owners tried one expert after
another, but none of them could figure but how to fix the engine.
Then they brought in an old man who had been fixing ships since he was
y
A company once made glassware. They could not figure out why it did not hold
water. They hired an engineer who told them to put a bottom on the glass. It
held water. The manager that hired the engineer left the company and a new
manager was hired. He asked why this engineer was hired and did
Second hand info.
A colleague of mine, Mark Nave, was hired as an EMC engineer by Network
Appliance in the early 2000s. He took them to regularly passing the first
time through.
After awhile, the VP who hired him retired or moved on, and the new VP
didn¹t have the history of not passing changing
Out of curiosity,
I would like to know (especially from those who have been in the business
for a while) what is your "first pass success rate" for safety
certifications on new product introductions? That is, to achieve a product
safety certification from an accredited laboratory with no action it
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