Such arrestors actually have to withstand kA's for a short discharge! Look at your overvoltage protector you use (hopefully) for your computer and peripherals. I have here a Belkin contact block that is guaranteed for 40,000 A. Belkin says to compensate all equipment connected to it that will be damaged in case of a surge voltage for life time (of the protector). I once hat such a case and got a new contact block without troubles. There was no damage to the protected equipment, only the surge protector died in service. More modern surge arrestors have a ceramic housing, so they aren't spectacular. eric
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Tom Harris Sent: woensdag 24 september 2014 2:21 To: [email protected] Subject: Re: [neonixie-l] Telecom lightning arrestor More on the arrestor, I tried it this morning and it has got better overnight, it just strikes at 290V, before it was not striking reliably at 300V. It must have been tuckered out. It looks like it is recovering slowly. Tom Harris <[email protected]> On 24 September 2014 08:25, Tom Harris <[email protected]> wrote: Well I half-destroyed one with an overcurrent by connecting it to 300V AC with a 150W lamp as a current limiter. It gave a bright red neon discharge on both electrodes and a lovely pale blue space discharge for about 10 secs. Now it needs about 350V to fire with a 10K series resistor. I shall test another one with a more moderate current and see how it lasts. Tom Harris <[email protected]> On 24 September 2014 08:19, gregebert <[email protected]> wrote: I'm curious how long these devices would last if they were operating continuously at a low current (just enough to get a visible discharge). Despite being 'old technology', gas-filled arrestors are advantageous because they have low capacitance and very low off-state leakage. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5bf27fca-0d40-4c1d-af90-72ea15e 8735b%40googlegroups.com <https://groups.google.com/d/msgid/neonixie-l/5bf27fca-0d40-4c1d-af90-72ea15 e8735b%40googlegroups.com?utm_medium=email&utm_source=footer> . For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAHjG12TLw%2BJpxMhsUb1VB1Pwx3mN LxVyB96EcobjA%2BGBoRHABw%40mail.gmail.com <https://groups.google.com/d/msgid/neonixie-l/CAHjG12TLw%2BJpxMhsUb1VB1Pwx3m NLxVyB96EcobjA%2BGBoRHABw%40mail.gmail.com?utm_medium=email&utm_source=foote r> . For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/!%26!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAABQ6tN0SkyNBpI5cm5ZrsVEBAAAAAA%3D%3D%40zeelandnet.nl. For more options, visit https://groups.google.com/d/optout.
