UL etc

[Gary Pace]

Hi y'all :

Does anyone know of a good consultant who can help me design to UL508C, CSA
22.2#14 & EN50178 ?

I'm in Houston, TX

Thanks
Gary

 

[Joerg]

Hello Gary,

Does anyone know of a good consultant who can help me design to UL508C, CSA
22.2#14 & EN50178 ?

In which area do you need help? Isolation? I am not much into industrial
electronics but heavily into IEC601-1 (medical electronics) which is
very strict when it comes to mains and patient isolation. Same with EMI.

Often we have sensors, power transducers and electronic modules that
need to run fully isolated because they are in patient contact.
Defibrillator safety requires a 5kV barrier.

Regards, Joerg

http://www.analogconsultants.com

 

[Pooh Bear]

Joerg wrote:

Hello Gary,

Does anyone know of a good consultant who can help me design to UL508C, CSA
22.2#14 & EN50178 ?

In which area do you need help? Isolation? I am not much into industrial
electronics but heavily into IEC601-1 (medical electronics) which is
very strict when it comes to mains and patient isolation. Same with EMI.

Often we have sensors, power transducers and electronic modules that
need to run fully isolated because they are in patient contact.
Defibrillator safety requires a 5kV barrier.

A google shows it to be about "Electronic equipment for use in power
installations"

http://www.cranage.co.uk/lvdstand3.htm

Graham

 

[Joerg]

Hello Graham,

A google shows it to be about "Electronic equipment for use in power
installations"

Yes, the VDE0160 turf. Often the challenges there boil down to where
they are in medical. Tough isolation rules but the need to supply data
and DC supplies across that isolation barrier. In medical there usually
is the added task of receiving signals in the microvolt range back
across that barrier and this provides some real fun during the design.

What we don't have in medical are the surges that need to be dealt with
coming from the power side. Then again, we do have some of those
challenges. For example the regulation that much of our equipment must
recover without damage and return to fully operational status within x
seconds if the doc accidentally didn't disconnect the patient before
defibrillating.

Regards, Joerg

http://www.analogconsultants.com