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Total 10 documents matching your query.

1. [RFI] Wiring practices to minimize emissions (score: 1): Author: nm8rmedic via RFI <rfi@contesting.com>; Date: Tue, 12 Jul 2016 11:55:48 -0400; There are a couple participants on this board who have direct experience with industrial wiring practices that minimize radiated EMI emissions. I am a city manager and have the opportunity to discus; /archives//html/RFI/2016-07/msg00029.html (7,331 bytes)
2. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 12 Jul 2016 09:53:27 -0700; Key issues are: 1) Include in your specification for equipment that all shield connections are bonded to the shielding enclosure at the point of entry/exit. This addresses what we in the pro audio wo; /archives//html/RFI/2016-07/msg00030.html (10,069 bytes)
3. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Tue, 12 Jul 2016 13:25:08 -0400; I would like to add to Jim's (K9YC) comments that most variable speed drives (VSD's or VFD's) were made EMI/EMC compliant by the drive manufacturer via the use of an input line filter during the comp; /archives//html/RFI/2016-07/msg00031.html (11,727 bytes)
4. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: "James Gordon Beattie, Jr." <w2ttt@att.net>; Date: Tue, 12 Jul 2016 11:13:32 -0700; Jim, et al, Breaking DC paths with optical interfaces reduces inductive and radiated emissions. Further, twisted pairs are good, shielded twisted pairs properly bonded and grounded are better. Vy 73,; /archives//html/RFI/2016-07/msg00032.html (10,845 bytes)
5. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: "James Gordon Beattie, Jr." <w2ttt@att.net>; Date: Tue, 12 Jul 2016 11:08:33 -0700; Don, VFD cable is a great suggestuon, but it needs to be installed correctly and checked. Further, the maintenance processes need to call out their use and proper installation to ensure that the ben; /archives//html/RFI/2016-07/msg00033.html (13,171 bytes)
6. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: "James Gordon Beattie, Jr." <w2ttt@att.net>; Date: Tue, 12 Jul 2016 11:00:57 -0700; Scott, A couple of key points to consider for the benefit of both the public and the city: 1. Noise from large industrial or commercial equipment can be as tough to predict and mitigate as consumer d; /archives//html/RFI/2016-07/msg00034.html (11,343 bytes)
7. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 12 Jul 2016 17:34:24 -0700; How do you use an optical interface in a circuit carrying 30A DC? Or even 30A AC? Further, twisted pairs are good, shielded twisted pairs properly bonded and grounded are better. That is NOT universa; /archives//html/RFI/2016-07/msg00035.html (9,474 bytes)
8. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: nm8rmedic via RFI <rfi@contesting.com>; Date: Wed, 13 Jul 2016 10:27:27 -0400; Gentlemen, Thank you for well considered input. 1) Mention was made of using twisted pair. Is that practical for 40 horsepower motors? 2) I recall from past board discussions the necessity of minimiz; /archives//html/RFI/2016-07/msg00036.html (9,861 bytes)
9. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 13 Jul 2016 10:37:51 -0700; Thank you for well considered input. 1) Mention was made of using twisted pair. Is that practical for 40 horsepower motors? What are the voltage and current? Twisted pair to handle up to about 40A ca; /archives//html/RFI/2016-07/msg00037.html (14,164 bytes)
10. Re: [RFI] Wiring practices to minimize emissions (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Wed, 13 Jul 2016 22:39:46 -0400; We used twisted pair for a lot more power than that. When we hipotted the HV lines (OD close to two inches, it'd take 15 minutes to a half hour for the charge to equalize. That was prior to 87 so my; /archives//html/RFI/2016-07/msg00039.html (11,367 bytes)

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