[PSES] RTTE example

[Ian White (SXS UK)]

Forum members,

Could l have your views on the following please.

If you have a control panel which has relays and various other control gear on, 
all mounted on a Din rail type construction this all comes under the LVD and 
EMC Directives.

If you then include a DIN rail mounted 3G Modem (which has its own D of C) 
would the entire panel then come under RTTE Directive ?

1) Would the panel have to be re-tested ?
2) RTTE requirements on LVD now apply with no bottom limits on LVD?

Thanks

Ian White
Compliance and Reliability.

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Re: [PSES] RTTE example

[John Woodgate]

In message 
ea4ca5c9ced91040aa61aacf924588669d9...@ukldexm02.global.spiraxsarco.com
, dated Wed, 28 Aug 2013, Ian White (SXS UK) 
ian.wh...@uk.spiraxsarco.com writes:




If you have a control panel which has relays and various other control 
gear on, all mounted on a Din rail type construction this all comes 
under the LVD and EMC Directives.


 

If you then include a DIN rail mounted 3G Modem (which has its own D of 
C) would the entire panel then come under RTTE Directive ?


 
The LVD and EMCD Guides mention control panels, if I remember correctly, 
because they are usually specially made and not 'catalogue items'. But 
whether the RTTED or its Guide have similar provisions is another 
matter. Such things as DIN-rail modems may not have been in mind when 
the documents were written.


1) Would the panel have to be re-tested ?


Is there any reason to expect the modem not to conform just because it's 
mounted in your panel? It was presumably type-tested for conformity in a 
typical panel environment (i.e. properly mounted on a DIN rail).


2) RTTE requirements on LVD now apply with no bottom limits on LVD?


I'm not sure that it's relevant.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
Why is the stapler always empty just when you want it?

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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