Hi Alex,
I don't think the current plan will be ok as is.
Thumbscrews are not "tool accessible" so
theoretically untrained personnel could access
dangerous voltages. Some options might be:
1) Contact the supply manufacturer and ask
them if they could supply it with "european"
type barrier strip as an option.
2) Fabricate a shield to keep fingers away
>from the barrier strip. As long as it requires
tools to remove it you should be ok.
3) Replace the thumb screws with something
that requires a tool for access and put the
appropriate warning labels on the outside
("Danger - High Voltage, Trained Personnel
Only" type)
No matter which way you go the warning
label(s) should be used.
Scott B. Lacey
On 16 Jun 2008 at 12:15, Alex Horvath wrote:
> Hi,
> I'm an EE at a small company and I have to figure out the regulatory issues
> on my own so apologies for rudimentary nature of my question...
> Or product is a telcom industry product designed that will be located in
> "back room" type application. It is chassis based (metal) and I have selected
> a chassis mount, metal case AC-DC power supply that will be mounted inside
> the chassis. The rub here is that the inside of the chassis will be customer
> accessible (customer is sys admin type personnel) for routine/necessary
> product configuration. The chassis is accessed via 2 thumbscrews that allow a
> panel to swing open at which point the AC terminals on the power supply will
> be exposed. An example of the power supply is -
> http://www.v-infinity.com/adtemplate.asp?invky=1008007&catky=764537&subcatky1=46887&subcatky2=809398&subcatky3=
> which has ring terminal connections.
> To pass UL, I'm guessing that additional shielding will be required to cover
> the ring terminals. Are there detailed requirements for this type of
> situation or is any reasonable cover/shield acceptable?
> Thanks,
> Alex
>
> -
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