Doug,My thoughts as well.Thanks,Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Doug Powell <doug...@gmail.com> Date:
8/1/19 4:38 PM (GMT-05:00) To: Steve Brody <sgbr...@comcast.net> Cc: EMC-PSTC
<EMC-PSTC@listserv.ieee.org> Subject: Re: [PSES] Plasma generator Steve,I've
dealt with plasma generators before, in my case atmospheric plasma for
cleaning. Unless the plasma wand is under some form of robotic control I would
not think this is not machinery. And in my view it is not an arc welder. What I
used in the past was use EN 61000-6-2 and EN 61000-6-4 for Industrial and for
Group 2 Class A invoking the clause "for treatment of material". If you use
IEC 61010-1 for the safety portion, you are then required to use IEC 61326-1,
which once again refers back to the same family of test standards with various
tweaks to the test levels.Best of luck,
Dougdougp01@gmail.comhttp://www.linkedin.com/in/dougp01On Thu, Aug 1, 2019 at
2:22 PM Steve Brody <sgbr...@comcast.net> wrote:
Experts:One of my clients has a process tool for use in a controlled EMI
environment, that incorporates a plasma generator for cleaning housings before
glue is applied. The plasma electron density is typically around 1011 cm-3
There are two parts to this question:an EMC test house told them that because
it had a plasma generator it would need to be EMC tested to EN 60974-10 which
is for arc welders and associated equipment. This scope of this standard says,
in part, "IEC 60974-10:2014 specifies a) applicable standards and test methods
for radio-frequency (RF) emissions; b) applicable standards and test methods
for harmonic current emission, voltage fluctuations and flicker; c) immunity
requirements and test methods for continuous and transient, conducted and
radiated disturbances including electrostatic discharges. This standard is
applicable to equipment for arc welding and allied processes, including power
sources and ancillary equipment, for example wire feeders, liquid cooling
systems and arc striking and stabilizing devices." So the question is to
continue to use EN 61000-6-2 and EN 61000-6-4 if classified as machinery, or EN
61326-1 if classified as MCE equipment, or have a separate report done for EN
60974-10?The individual tests still use the EN 61000-4-x series, but with some
modification. It also requires testing to EN 61000-3-2, and 3-3, which would
normally be done for machinery or MCE.The second part is safety evaluation of
the complete product. There is nothing in EN 61010-1 or EN 60204-1 that has
the word 'plasma'. Operator safety meets requirements. I am not aware of any
special consideration that needs to be given to the plasma generator. In
fairness I have not contact the plasma generator manufacturer yet to see what
if any standards their units are, I assume, approved to.Thought and comments
greatly appreciated.
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-- Douglas E Powelldougp01@gmail.comhttp://www.linkedin.com/in/dougp01
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