Well I am sure we all appreciate your comments!!

One reason I recommended an NB is for liability concerns. It is my
understanding that by using an NB the manufacturer can show
due diligence in the event of a law suit.

Am I right?

Thanks!

Charles Grasso
W: 303-706-5467

From: sgbrody [mailto:[email protected]]
Sent: Thursday, August 01, 2019 5:49 PM
To: [email protected]
Subject: Re: [PSES] Plasma generator


 This message originated outside of DISH and was sent by: 
[email protected]<mailto:[email protected]>
I trust you guys more!!

Thanks,



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: "Grasso, Charles" 
<[email protected]<mailto:[email protected]>>
Date: 8/1/19 7:32 PM (GMT-05:00)
To: Steve Brody <[email protected]<mailto:[email protected]>>, 
[email protected]<mailto:[email protected]>
Subject: RE: [PSES] Plasma generator

Recommend you work with a Notified Body on this one.


Thanks!

Charles Grasso
W: 303-706-5467

From: Steve Brody [mailto:[email protected]]
Sent: Thursday, August 01, 2019 2:09 PM
To: [email protected]<mailto:[email protected]>
Subject: [PSES] Plasma generator


 This message originated outside of DISH and was sent by: 
[email protected]<mailto:[email protected]>

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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