Dear All
But it must be understood for equipment that is intended to be left on all the
time, the fact that you have "switch on transients" is not relevant..
So if the argument is, well what happens in a power cut ?
1. This is not an EMC problem, hence can not be controlled by the EMC
direc
I read in !emc-pstc that ssel...@yorkemc.co.uk wrote (in
) about 'dmax test' on
Fri, 28 Feb 2003:
>I agree that switch-on is the most likely culprit in a EMC sense, and that
the
>cooling of mitigation devices (thermistors etc) is important. I was merely
>pointing out that the standard specific
I agree that switch-on is the most likely culprit in a EMC sense, and that
the cooling of mitigation devices (thermistors etc) is important. I was
merely pointing out that the standard specifically states: "switch off the
EUT before the end of the 1 min measuring time interval"I suppose i
Annex B of EN61000-3-3 says that both the switch on and switch
off events should occur during each of the 1 minute tests.
Steve Seller
York EMC Services
On 25 Feb 03, at 9:26, djumbdenst...@tycoint.com wrote:
>
>
> We have a HP HFTS (harmonic and flicker test system) 6843A that runs the
>
ary 27, 2003 12:48 PM
> To: emc-p...@majordomo.ieee.org
> Subject: Re: dmax test
>
>
> Annex B of EN61000-3-3 says that both the switch on and switch
> off events should occur during each of the 1 minute tests.
>
> Steve Seller
> York EMC Services
&g
I read in !emc-pstc that ssel...@yorkemc.co.uk wrote (in ) about 'dmax test' on Thu, 27
Feb 2003:
>Annex B of EN61000-3-3 says that both the switch on and switch
>off events should occur during each of the 1 minute tests.
It's a good idea to understand what the test is intended to achieve. In
I read in !emc-pstc that John Woodgate wrote (in
) about 'dmax test' on Tue, 25 Feb
2003:
>I will forward you message to someone who is in a VERY good position to
>advise, but whose name I may not reveal. Watch this space.
Well, I did that and he says you are OK with what you are doing. If he
sa
I read in !emc-pstc that djumbdenst...@tycoint.com wrote (in <846BF526A2
05F84BA2B6045BBF7E9A6A0532B31F@flbocexu05>) about 'dmax test' on Tue, 25
Feb 2003:
>We have a HP HFTS (harmonic and flicker test system) 6843A that runs the
>original flicker tests. Now 61000-3-3 requires a measurement of dm
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