I recently designed a piece of in-house gear that uses the PCB as part of
the protective earth GND return. At first I thought I would be forced to use
a wire(s) only (which was awkward given the mechanics of the unit) but then
was convinced that EN61010 did not require it. To get around the via is
I read in !emc-pstc that drcuthbert wrote (in
)
about 'EN60950 protective conductor test (was Re: Circuit Breaker Tr
ipping Dring Fault Tests)' on Tue, 4 Feb 2003:
>The results would then
>be published in Compliance, Conformity, or Printed Circuit design magazine.
Please also s
Chris,
I have estimated this type of thing in the past assuming adiabatic
conditions. That is, the energy put into the material heats it and no energy
is lost during the heating. This gives the worse-case temperature rise. So,
what is needed is the electrical resistance of the material and the spe
What is needed is the I squared t rating of the breaker. Then the (I^2)(t)
rating of the PCB. Then you know if the PCB can take it.
Dave Cuthbert
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Monday, February 03, 2003 4:15 PM
To: emc-p...@majordomo.ieee.org
Subject: EN60950 prote
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