UL and TUV will accept an amplifer mute and display turn off  as an off condition as long as it is done without human intervention at the time of switching, no input power requirement. CSA will not, and has stated that the product should either be disconnected from the mains or the secondary circuitry shall be disconnected and the input power in the off state shall be less than 15W.

Ed

   

>From: "Lou Aiken"
>Reply-To: "Lou Aiken"
>To: "Colgan, Chris" , "'Emc-Pstc' (E-mail)"
>Subject: Re: definition of "off"
>Date: Thu, 22 Nov 2001 12:37:23 -0600
>
>According to my understanding of 950, which is much better than 65, I believe a product must be safe, "within the meaning of the standard" during unattended operation and also when unattended in so-called "off" mode.
>
>Consequently, the status of the product when in the off mode, should be determined by the manufacturer, and the safety authorities should show little interest.
>
>Regards, Lou
>
>Lou Aiken
>27109 Palmetto Drive
>Orange Beach, AL
>36561 USA
>tel +1 251 981 6786
>fax +1 251 981 3054
>mobile +1 251 979 4648
> ----- Original Message -----
> From: Colgan, Chris
> To: 'Emc-Pstc' (E-mail)
> Sent: Thursday, November 22, 2001 8:20 AM
> Subject: definition of "off"
>
>
>
> What is clear from IEC60065 is that if a product is capable of being
> switched on or off or both by a timer or a data link, a front panel
> mechanically operated switch is not required. What is not clear is the
> definition of off.
>
> Has anyone been given a definition, preferably by a CTL member or the like?
>
> Cheers
>
> Chris Colgan
> Compliance Engineer
> TAG McLaren Audio Ltd
> The Summit, Latham Road
> Huntingdon, Cambs, PE29 6ZU
> *Tel: +44 (0)1480 415 627
> *Fax: +44 (0)1480 52159
> * Mailto:chris.col...@tagmclaren.com
> * http://www.tagmclaren.com
>
>
>
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