Re: [PSES] Standards for acoustic noise

Hi All, I am pulling up an old thread here, because it may relate to my question. Is there any requirement or guidance for sound pressure level limits from ultrasonic equipment operating 40-50 kHz and used in a residential environment? 61010 has a good reference in section 12.5.2, and 60950 has

[PSES] Job Announcement - Electrical Engineer/Assessor

Good morning, I wanted to share a position announcement with the group. OSHA's Nationally Recognized Testing Laboratory (NRTL) office is looking to hire another engineer/laboratory assessor. Complete details of the position can be found at this link

Re: [PSES] 61010 testing fine points for creepage and clearance.

Hi Lauren: I work mostly with EN 60950, but the problem you describe with the 200V circuit embedded in an otherwise safe circuit is a problem I have encountered several times with 60950. So, I will just make a few general observations that may be helpful: 1) In order for the 200V circuit to

Re: [PSES] Standards for acoustic noise

In message calvemi_04vk4qkvyehcfqdwhkbvepr1no7-dfgolazu5em2...@mail.gmail.com, dated Thu, 27 Mar 2014, S Drysdale sdd...@gmail.com writes: I am pulling up an old thread here, because it may relate to my question.   Is there any requirement or guidance for sound pressure level limits from

Re: [PSES] 61010 testing fine points for creepage and clearance.

Hi Lauren, I just joined on to this list, so I'm not sure where you're at in the process, but based on your description of this circuit you should be looking at 6.7.3 for creepage and clearance. This section is for secondary circuits like those supplied by bricks on strings. You should

[PSES] High voltage output for test equipment

Hello all, I'm wondering if anyone has experience with test equipment intended to put out a high voltage to a set of accessible test leads, e.g. a hipot tester. If so, for compliance to 61010-1, how do you get around the access to hazardous live parts issue? Thanks, *Paul MiltonGM

Re: [PSES] High voltage output for test equipment

There are sections of the standard(s) that address construction and performance where, for operating reasons, haz V must be exposed. Brian From: Paul Milton [mailto:p...@gmcompliance.com] Sent: Thursday, March 27, 2014 11:48 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] High voltage output

Re: [PSES] High voltage output for test equipment

Hi Paul, This is allowed but you cannot use the 61010-1 Part 1 basic standard alone. You must bring in a Part 2, particular standard to be used in conjunction with Part 1. Select the Part 2 for the type of handheld probes you are using. Take a look at EN/IEC 61010-2-30 and EN/IEC 61010-2-32.

Re: [PSES] High voltage output for test equipment

We have a dielectric tester which makes use of retractable high voltage test probes. The probe requires an operator to depress a plunger to access the conductive tip. Google comes up with some options. Donald McElheran Product Compliance Specialist Ross Video | Production Technology

Re: [PSES] High voltage output for test equipment

In message cabyvtvnveyhm5sqvhvmgpbdeqptxj0x3jl7dme2vtndarmc...@mail.gmail.com, dated Thu, 27 Mar 2014, Doug Powell doug...@gmail.com writes: .  In the past, this has been a serious issue when the timing of mandatory compliance with the Part 1 Ed 3 is in effect and the planned update to a

[PSES] latest article on troubleshooting designs for radiated and conducted immunity

Hi Everyone, I have been back to writing again. Here is my latest article: Technical Tidbit - March-April 2014 Troubleshooting Radiated and Conducted Immunity Problems in the Development Lab This month's Technical Tidbit

Re: [PSES] 61010 testing fine points for creepage and clearance.

Hi Lauren: You ask some questions whose answers cannot be short. Transient overvoltages are normal in any power distribution system. They arise mainly from two sources: 1) lightning; 2) switching equipment on and off. Transient overvotages are either normal mode or common mode. Normal mode