B
bud--
- Jan 1, 1970
- 0
w_tom said:Various and routine insults posted by Bud are removed from the
quote.
w_ is hallucinating again. There were no insults in my post.
Bud promotes for plug-in protector manufacturers.
To quote the all-knowing w_ "it is an old political trick. When facts
cannot be challenged technically, then attack the messenger."
And there was nothing in my post about surge protection.
Truth
concerning things not provided by his products such as earth ground
must be negated by insults.
Further hallucinations and completely unrelated to anything in my post.
In developing standards for surge testing, one waveform (numbers no
longer remembered- maybe 100/10000 usec) was proposed and rejected.
That test waveform was rejected because it caused incandescent light
bulb failure. Lightning strike does not cause light bulb failure
meaning that test waveform was not a valid testing standard. Other
test waveforms that were acceptable are now listed as IEEE/ANSI C62.xx
standards.
Geez - something on-topic.
Looking at the relevant technical paper, arcing started in a lamp at
about 30 microseconds of a 50 microsecond surge. (My post recollected a
100 microsecond surge.) Both are far from w_’s 10,000 microseconds.
The paper says for 120V 100W bulbs, the bulb may fail with an 800V
surge; few bulbs survive 1500V.
For 230V European systems, a bulb may fail at 1800V.
In any case, surges can certainly cause burnout of incandescent light
bulbs, which is what I said.
Some protectors would even claim to meet C62.xx standards. They
were playing games with the naivety of many who never bothered to ask
embarrassing questions. How does a protector conform to a test
waveform? It does not. But IEEE/ANSI C62.42 means a protector must
be better?
Totally irrelevant to anything.
Test waveform was rejected as a standard because it did something to
light bulbs that lightning does not - damage the bulb.
The technical paper was written by Francois Martzloff and others.
Martzloff was the US—NIST guru on surges, did much research and had many
published peer-reviewed technical papers on surges.
So who should I believe - w_ or Martzloff? Gee, its a tough call.