Re: [PSES] electric shock from capacitor discharge

[Richard Nute]

 

 

Here is a summary of capacitor discharge situations:

 

Operator conditions:  Vacuum tube radio/tv with isolated metal trim.  (John 
Woodgate)

Service conditions:  Vacuum tube radar servo controller.  (Doug Powell)

Service conditions:  UPS capacitor discharge before servicing.  (Bansi Patel)

Operator conditions:  Defibrillator automatic discharge. (Dave Osborn)

Operator conditions:  CRT capacitance.  (Mike Sherman) (Dan Roman)

Service conditions:  Power factor correction for motor drives  (Ted Eckert) 
(Julia Curson) (Mike Sherman)

Service conditions:  Small ion implanters.  (Lauren Crane)

 

We still need to identify in our safety standards when a charged capacitance 
requires a safeguard.

 

Thanks for your responses.

 

Stay safe!

Rich

 

 


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Re: [PSES] Commercial Standards with strict EMC emissions limits

[Ken Javor]

The international version of RTCA/DO-160 section 21 comes to mind, but that
is only for aircraft use.

Ken Javor
Phone: (256) 650-5261



From: Charlie Blackham 
Reply-To: Charlie Blackham 
Date: Sat, 3 Oct 2020 16:12:57 +
To: 
Subject: [PSES] Commercial Standards with strict EMC emissions limits

All
 
I¹m looking at various end applications for a particular radio module and am
drawing up a list of EMC emissions standards applicable to the end product
that have radiated emissions limits that are more stringent than those in
FCC 47CFR15B or EN 55032 Class B in the range 30 ­ 6000 MHz.
 
So far, I have identified:
* EN 60945:2002; Maritime navigation and radio communication equipment
* EN 50498:2010; Aftermarket electronic equipment in vehicles
* CISPR 25; Equipment installed in Vehicles.
 
Are there any other ones that would be applicable in Europe, or other
countries that people are aware of?
 
Best regards
Charlie
 
Charlie Blackham
Sulis Consultants Ltd
Mead House
Longwater Road
Eversley
RG27 0NW
UK
Tel: +44 (0)7946 624317
Email: char...@sulisconsultants.com 
Web: https://sulisconsultants.com/ 
Registered in England and Wales, number 05466247
 
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This message is from the IEEE Product Safety Engineering Society emc-pstc 
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[PSES] Commercial Standards with strict EMC emissions limits

[Charlie Blackham]

All

I'm looking at various end applications for a particular radio module and am 
drawing up a list of EMC emissions standards applicable to the end product that 
have radiated emissions limits that are more stringent than those in FCC 
47CFR15B or EN 55032 Class B in the range 30 - 6000 MHz.

So far, I have identified:

  *   EN 60945:2002; Maritime navigation and radio communication equipment
  *   EN 50498:2010; Aftermarket electronic equipment in vehicles
  *   CISPR 25; Equipment installed in Vehicles.

Are there any other ones that would be applicable in Europe, or other countries 
that people are aware of?

Best regards
Charlie

Charlie Blackham
Sulis Consultants Ltd
Mead House
Longwater Road
Eversley
RG27 0NW
UK
Tel: +44 (0)7946 624317
Email: char...@sulisconsultants.com
Web: https://sulisconsultants.com/
Registered in England and Wales, number 05466247


-

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Mike Cantwell 

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