[Dsg-hallc_nps] [EXTERNAL] SAMTEC connectors

[Aaron Brown]

Good to know.
Thanks for the information everyone.
________________________________
From: Stephen Wood <saw at jlab.org>
Sent: Tuesday, September 1, 2020 3:54 PM
To: Brad Sawatzky <brads at jlab.org>
Cc: Jack Segal <segal at jlab.org>; Aaron Brown <ambrown at jlab.org>; dsg-hallc_nps at jlab.org <dsg-hallc_nps at jlab.org>
Subject: Re: [EXTERNAL] [Dsg-hallc_nps] SAMTEC connectors

I have talked to Chris Cuevas some and he has talked to someone on the electrical safety committee.   The impression I am getting is that, in light of previous accidents and the office of enforcement visit, we should be very reluctant to use under-rated parts.  We should set up a meeting with him and all interested to discuss what we can grandfather in, if anything, and what needs to be redesigned.  Chris is unfortunately busy this week with a conference, so it will have to be next week.

We don’t have to rush to order anything before the end of the fiscal year.   It would have been nice, but we do have money in next year’s budget.

Steve

> On Sep 1, 2020, at 3:44 PM, Brad Sawatzky <brads at jlab.org> wrote:
>
> Based on what I've heard from Steve, I think prototypes of the NPS
> chassis connectors boards will have to be sent to JLab and tested so
> someone here can sign off on it.
>
> I believe that will push the 'NPS side' of the NPS HV connector issue
> into the next FY.
>
> -- Brad
>
> On Tue, 01 Sep 2020, Jack Segal wrote:
>
>>   The last I have seen was the email on 8/25 from Thi.
>>   So, I believe no further thought has been given to an alternative.
>>   I do not have a problem with the connectors, assuming the OSP states no plugging and unplugging under voltage. I'm
>> certain that is how people would prefer the work to be done on the detector, with HV off.
>>
>> On 9/1/2020 1:54 PM, Aaron Brown wrote:
>>> Hi Brad and Jack,
>>>
>>> I just wanted to touch base about something ahead of this Friday's (09/04) meeting.
>>> As you know, we are in the process of procuring all of the materials
>>> needed to fabricate the 42 HV multi-conductor cables.
>>> I was wondering if there had been anymore discussion regarding the
>>> SAMTEC connector voltage rating.
>>> The only items left for us to order are the IPBD-08-D-K and
>>> IPBD-15-D-K SAMTEC connectors, but as these are rated below the
>>> assumed operating voltage (anywhere from 800 V to 1100 V), we have
>>> not ordered them yet.
>>>
>>> Would either of you be able to speak to whether alternative
>>> connectors are being considered/researched, or if these SAMTEC
>>> connectors are fine to order?
>>>
>>> Thanks,
>>> Aaron
>>>
>>>
>>> _______________________________________________
>>> Dsg-hallc_nps mailing list
>>> Dsg-hallc_nps at jlab.org
>>> https://mailman.jlab.org/mailman/listinfo/dsg-hallc_nps
>>>
>>
> --
> Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
> Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
> The most exciting phrase to hear in science, the one that heralds new
>  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov

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