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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to alt.home.repair,alt.engineering.electrical,alt.tv.tech.hdtv,sci.electronics.basics,sci.electronics.repair
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Surge / Ground / Lightning
On May 6, 10:33*pm, "Michael A. Terrell"
wrote: w_tom wrote: On May 6, 12:08 pm, "Michael A. Terrell" wrote: * *Where did I say HOW was protected? It was my second week at that station, and the chief engineer took off on a long overdue vacation. If you would learn to read, rather than just do mindless rants you wouldn't look so stupid. *At that time the building had a UFER ground, and a three phase protection system at the meter CTs. That didn't prevent the damage, as you claim it should. * Lightning created damage. *Since Michael Terrell says it had an Ufer ground, that means grounding was properly installed and not corrupted? *Therefore the resulting damage proves, "Woe is me. Nothing can protect from lightning."? *Nonsense. * *That's it, _wacko_. *Use more misdirection. *It is YOU who claims that broadcast facilities sustain no damage from lightning strikes. * Damage was created by a surge. *A responsible human locates the defect in that protection system. *Michael Terrell was defeatist. *He 'knew' nothing can earthing lightning without damage. * *More _wacko_ lies, as expected. * Then Michael posts nonsense about other protectors so he need not admit this fact: MOVs are not used on telephone lines. *Why discuss fuses? *Fuses obviously are not for surge protection - when one has basic electrical knowledge. * Effective protectors (even gas discharge tubes - GDTs) earth direct lightning strikes and remain functional. * So why is Michael now discussing GDTs and fuses? * If you could read and comprehend you would know. *Sadly, you are too ignorant to understand what you read. *Michael has again been caught posting in error. *MOVs are not used for telephone line surge protection due to excessive capacitance. * *Liar. *You keep telling this lie, even though I posted links to two telephone cards using them, as well as the datasheets form one of many OEMs who make MOVs for Telecom service. *The stated capacitance is 480 pF *Tell us how that affects the bandwidth, when the line to the building has a higher capacitance. *This has long been common knowledge among those who post facts - not insults. * *gee, stop posting lies and insults, and learn the truth. *Nnoted and finally admitted by Michael is a reasons why so little lightning in the UK creates so much damage. * *Another blatant lie. I never mentioned anything to do with protection in the UK, _wacko_. *Master sockets are not even earthed as the equivlant NID is, routinely, in all North America. * *You didn't even look at that Epcos link, did you? *You can't admit that you are the biggest idiot and liar on USENET. *It doesn't really matter, everyone sees through your pathetic attempts to distort the truth. When that doesn't work, you fall back on lies and omissions to smear anyone you don't agree with. * Responsible people who suffer surge damage immediately search for the human failure that made damage possible. * *I did look. *What I found was large chunks of concrete blown away, and pieces of burnt rebar from a direct strike. *Search typically begins by looking for defects in the single point earth ground system. * *Now UFER is single point in a 10,000 Sq. Ft building? *Those who promote magic box plug-in protectors would not do this and must assume lightning damage cannot be avoided - a defeatist attitude. * *You are the one with an attitude. *Very little can be done to protect from a direct strike. Some towers have had entire sections vaporized from multiple strikes during a single storm, yet you continue to lie, by stating it can't happen. No where did I claim that plug-in protection was used. *This is another of your lies. *You ignored the fact that I had never even seen most of the building, because I was just hired. I was in the accounting office, right by the side door, and parking lot where I filled out the application. * *Here is the part you snipped, because you can't tell your ignorant lies, and leave it in: __________________________________________________ _________________________*_ * *Gee, _wacko_ you've never seen ANY modern business telephone equipment? *Gas tubes are fragile and very expensive. The protection isn't to save the privately owned telephones, it it to limit damage to the building. *Even that mid '60s 1A2 system had every output of the power supply fused to prevent a fire. Explain why an MOV's capacitance is high enough to affect a phone line. Never mind. *I have a Nitsuko/NEC DX2NA-32SYTEMEM KEY TELEPHONE SYSTEM in front of me, and every CO line in it has a MOV across the line. *Once more, you're preaching lies and using deceit to try to make others look bad. http://refurbishednitsuko.net/productInfo.aspx?productID=75978489-9ac.... is the Central Office line card for four telephone lines. See the black MOVs to the right of each pair of fuses? http://refurbishednitsuko.net/productInfo.aspx?productID=f5453e33-047.... is the card for four standard 2500 type telephones, or equivalent equipment. See the pairs of black MOVs over the blue connectors at the bottom of the screen? They are all japanese, with no brand markings. http://www.epcos.com/web/generator/Web/Sections/Publications/PDF/SIOV... is the Epcos MOV databook, with datasheets for Telecom applications. page 213 list the TELECOM MOV data. * *Every line into that studio building had a long distance call device diverter in the line that had MOV across the phone line. Every one of them survived the direct hit to the building and STL tower. That's more than can be said of your ability to use reason, and learn new things. * *You need to get your head out of 1920 and learn modern electronics. The one thing we learned today is that you don't know any more about Telecom that you do lightning protection, or reading comprehension. __________________________________________________ _________________________*_ --http://improve-usenet.org/index.html Use any search engine other than Google till they stop polluting USENET with porn and junk commercial SPAM If you have broadband, your ISP may have a NNTP news server included in your account:http://www.usenettools.net/ISP.htm LOL Haven't you seen W_ in action before? This is one of his standard rants repeated many times. According to W_ any damage from lightning or surges MUST be do to HUMAN failure. |
#2
Posted to alt.home.repair,alt.engineering.electrical,alt.tv.tech.hdtv,sci.electronics.basics,sci.electronics.repair
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Surge / Ground / Lightning
wrote: LOL Haven't you seen W_ in action before? This is one of his standard rants repeated many times. According to W_ any damage from lightning or surges MUST be do to HUMAN failure. Yes, I've seen that, and more. That's why I refute his crap. If he isn't refuted, people who don't know any better will believe him. -- http://improve-usenet.org/index.html Use any search engine other than Google till they stop polluting USENET with porn and junk commercial SPAM If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm |
#3
Posted to alt.home.repair,alt.engineering.electrical,alt.tv.tech.hdtv,sci.electronics.basics,sci.electronics.repair
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Surge / Ground / Lightning
Michael A. Terrell wrote:
wrote: LOL Haven't you seen W_ in action before? This is one of his standard rants repeated many times. According to W_ any damage from lightning or surges MUST be do to HUMAN failure. Yes, I've seen that, and more. That's why I refute his crap. If he isn't refuted, people who don't know any better will believe him. Just ask him about using a 3 1/2 digit VOM to check out those lousy ATX power supplies thet everyone is fostering on us. ;-) -- Virg Wall |
#4
Posted to alt.home.repair,alt.engineering.electrical,alt.tv.tech.hdtv,sci.electronics.basics,sci.electronics.repair
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Surge / Ground / Lightning
wrote: Or his statements about how lightning strikes exactly once every 8 years. He's got a whole repertoire of these beauties. I no longer see his posts unless they are quoted in someone else's replies, as I filter all posts in alt.home.repair that come from googlegroups. I really don't miss him, as he just endlessly repeats the same garbage that he's been spewing for a decade on usenet. He's a complete kook. Not quite complete. He's still breathing. -- http://improve-usenet.org/index.html Use any search engine other than Google till they stop polluting USENET with porn and junk commercial SPAM If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm |
#5
Posted to alt.home.repair,alt.engineering.electrical,alt.tv.tech.hdtv,sci.electronics.basics,sci.electronics.repair
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Surge / Ground / Lightning
VWWall wrote: Michael A. Terrell wrote: wrote: LOL Haven't you seen W_ in action before? This is one of his standard rants repeated many times. According to W_ any damage from lightning or surges MUST be do to HUMAN failure. Yes, I've seen that, and more. That's why I refute his crap. If he isn't refuted, people who don't know any better will believe him. Just ask him about using a 3 1/2 digit VOM to check out those lousy ATX power supplies thet everyone is fostering on us. ;-) He's no better at choosing a meter than he is at thinking. -- http://improve-usenet.org/index.html Use any search engine other than Google till they stop polluting USENET with porn and junk commercial SPAM If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm |
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