Dropping out for a while
Goodbye all! Thanks for the intelligence. Kyle Ehler [former Kansan] --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
Re: Electric Fence Controllers
Ah yes, -sparking, sizzling wire fences... About 40 yrs ago I spent a few summers visiting with an uncle and family on his Iowa farm. He had a small electrified pen with hogs in it. My cousin would dare me to take a blade of grass and loop it around the wire to see how much jolt I could take before letting go. The loop usually burnt through before I reached threshold, unless I ignorantly used a wide blade of buffalo grass... One heavily dewed morning, we were heading for the car to go to town and another cousin, Kerry Sue (who lived on the farm), excitedly ran toward the car (to occupy the shotgun position) that was parked adjacent to the hog pen. She slipped on the wet weeds. Her body slid under the electrified wires, wrapping her long hair around the lowest conductor. We stood around and laughed as she yelled and convulsed from the pulses. You could actually see tiny arcs in her hair. -maybe that's why to this day she is so docile... Most of these chargers are rated by the miles of wire they can energize, up to 20 miles worth! I seem to remember versions that were battery powered and only a few that were line powered. Determining safety requirements for these is why we get the big bucks... Happy Labor Day Holiday (USA), Kyle - Original Message - From: "Pettit, Ghery" To: "'John Allen'" ; "Ablewisp - Compliance Consultants" ; "Emc-Pstc" Sent: Thursday, August 29, 2002 4:01 PM Subject: RE: Electric Fence Controllers > > Reminds me of when my son (now 25) was very young. We were visiting > relatives in California who used electric fences to keep the cattle where > they belonged. We were sitting around talking when my son came into the > house with eyes as big as saucers to report that "the fence shook me!". It > took a moment for us to realize what had happened, and then the poor kid had > to listen to us all crack up. He grabbed the wire between pulses, then got > the treatment. He's been very careful around electric fences ever since. > And these fencers were used on multiple thousand foot runs of wire. You > could find the shorts to vegetation by walking the fence and listening for > the arc. > > Ghery Pettit > > -Original Message- > From: John Allen [mailto:ja014d7...@blueyonder.co.uk] > Sent: Thursday, August 29, 2002 1:51 PM > To: Ablewisp - Compliance Consultants; Emc-Pstc > Subject: Re: Electric Fence Controllers > > > > Hi Folks > > I once (about 12 years ago) had the dubious priviledge of being the Comittee > Secretary for the UK BSI standards committee dealing with these beasts at > British & International levels! > > This question was never asked (that was probably before my time!) but it was > my impression that these had fallen into the "too difficult" category and > the Commission at the time of the Directive (1972/73)ducked the issue to > ensure that it got agreed and that all the more common items got dealt > with.. > > There certainly was (and probably still is - which is why the situation in > the Directive does not appear to have changed) a considerable difference of > opinion between various countries as their safety and what the voltage and > particular pulse tim/energy limits should apply. > > Effectively, countries with small fields (like many in Europe) wanted low > power units which probably were safe enough for general use, and possibly > could have been kept within the LVD by some form of energy limitation kluge. > However, countries with "big" - or "very big" (like Australia and New > Zealand, etc.) - fields wanted units with lots more energy to avoid the > deterent effect being substantially reduced by contact with conductive > vegetation, etc. > > In the end (after I left BSI) I believe that some units were finally covered > under Part 2 Sections of IEC 60335 - but I personally doubt that they are > the high power versions. > > Does'nt really explain the situation fully but might give you some idea of > what was/is behind the exclusion - and do'nt forget that there are other > exclusions as well. > > Regards > > John Allen > > - Original Message - > From: "Ablewisp - Compliance Consultants" > To: "Emc-Pstc" > Sent: Thursday, August 29, 2002 4:11 PM > Subject: Electric Fence Controllers > > > > > > Hi > > I've been asked why electric fence controllers are "outside the scope" of > > the LVD. > > I don't know much about them and assume its because they generate voltages > > exceeding the LVD upper limit. > > Is my assumption correct? > > > > Many thanks > > > > Stuart Miller > > > > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald:
Re: Halogen free cables for the EU
I suspect this is more of a recycling issue. When wiring is incinerated rather than recycled at end of life, it releases all sorts of ugly substances into the atmosphere. I seem to recall reading this as part of either a German or Swedish (Danish?) proposal. I am sorry, it has been too long since I worked this issue and I cannot at this moment recall the organization's name... Blue Angel (Blau something? German) Swedish...no solid memory of the name, but it was a website for the organization. kyle (unemployed but hopeful to change this) - Original Message - From: "David Heald" To: Sent: Friday, August 23, 2002 4:01 PM Subject: Halogen free cables for the EU > > Does anyone know where the halogen restrictions for wire insulation in the > EU come from? I remember dealing with this issue sometime in the last few > years, but now I can't remember where the actual requirement came from. > Also, does anyone know if the Halogen restrictions only apply to, say, power > wiring - with low voltage intrasystem wiring exempt? > > Thanks, > Dave Heald > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
Re: solutions for markings durability test
Hi Brian, Get distilled water at any grocery store. I'm not sure about the methylated spirit, but I was able to get hexane from VWR Scientific www.vwrsplcom . Please note that any reagent grade will satisfy, but the cheapest is the way to go. One liter will last a lifetime, about $15 usd. Please note that, to obtain this material you must offer the supplier your employer's Federal EPA number. Oddly enough, I was years ago directed by my field engineer at UL NBK, to use WD-40 to perform the permanency test. Later on somebody tightened the sphincter and would not accept my test data, so I was forced to purchase hexane and use it and water for all tests (60950). All results were the same. Best Regards, Kyle (USA) - Original Message - From: "Brian McAuliffe" To: "Emc-Pstc Post" Sent: Tuesday, August 13, 2002 3:07 AM Subject: solutions for markings durability test > > can anybody recommend a one-stop source for the solutions (in small volumes) > called out in 60950,61010,60601 and 60335 for the durability of required > markings tests i.e. > > 1. Distilled water > 2. Methylated spirit > 3. Isopropyl alcohol > 4. Aliphatic Solvent Hexane, having a maximum aromatics content of 0.1% by > volume, a kauri-butanol value of 29, an initial boiling point of > approximatley 65 degC, a dry point of approximately 69 degC and a mass > perunit volume of approximately 0.7 kg/l. > > thanks > brian > > > > > > PLEASE NOTE CHANGE OF ADDRESS & NEW WEB-SITE > > Brian McAuliffe > > MCA Compliance Solutions Ltd > Unit 2 Lissane Business Park|Clarecastle|Co.Clare|Ireland > > w: www.mcac.ie > e: i...@mcac.ie > t: +353 (0)65 6823452 > m: +353 (0)87 2352554 > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
Re: Open chassis computers for sale - with neon lights?
RE: Open chassis computers for sale - with neon lights?I dont recall seeing a DoC on any of the $28 cases I have purchased for my home built pc's. It is remarkable that the ATX power supplies actually have UL/TUV many of these cases include. Please note that these cases do NOT provide sufficient containment to meet class A (much less class B) without intelligent treatment. It is indeed a big loophole, albeit for a small crowd. IMHE, purchasing a new pc with warranty costs only a little more than a self assembled pc from a heap of parts. This would seem to appeal only to the hobbyist (new age student?) and constitute a very small population. Kyle Ehler (forced retiree - LSI Logic) - Original Message - From: Wagner, John P (John) To: michael.sundst...@nokia.com ; emc-p...@majordomo.ieee.org ; George Stults Sent: Monday, July 15, 2002 12:51 PM Subject: RE: Open chassis computers for sale - with neon lights? The current FCC rules are pretty clear. For "systems" assembled from components, the "system" considered compliant if assembled from compliant components; namely, enclosures, motherboards, power supplies. The peripheral rules also apply. So, if this case or enclosure has been tested and shown to be compliant when used as a component for a system, then all is ok. To be legal, the case should have an FCC DoC. John P. Wagner
Safety standards for farm irrigation systems
Dear Colleagues! My experience base is in ITE using the 60950, NEC and EMC standards. A potential new job may be an application to farm irrigation systems (i.e. center pivot types). The electrical and EMC standards would apply to control panel systems and associated wiring but would there be a machine directive that covers anything here? (domestic and international) My feeble attempt at searching for standards that may apply only turns up the G1695 but this is electrical not mechanical and is nearly 10 yrs old. Thanks in Advance, Kyle Ehler / Kansas (unemployed PSE) keh...@cox.net --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
