Hi Peter,
Thanks for your advice! I read the previous 60056/60950-1/60335-1 standards
back to 199x and still could not trace the following requirements.
The dimensions of the symbol for Class II construction shall be such that the
length of
the sides of the outer square is about twice the length of the sides of the
inner square.
The length of the sides of the outer square shall not be less than 5mm, unless
the largest
dimension of the appliance does not exceed 15cm, in which case the dimensions
of the
symbol may be reduced, but the length of the sides of the outer square shall
not be less
than 3mm.
I am unable to recall the originate of this requirement and suspect if it comes
from the safety standards. For the time being, I have just to refer to the
latest requirements in safety standards without above requirement.
Regards,
Scott
On 1/6/2017, 12:38 AM, "Peter Tarver" <ptar...@enphaseenergy.com> wrote:
Scott -
The CE mark size is mentioned in RED, but not the double insulation symbol.
The LVD implicitly defers to the CE Marking Directive for size.
IEC 60417 doesn't have a symbol size for Symbol 5172. You might need to
refer to the standard used for the product bearing the Symbol 5172 for the
answer.
Peter Tarver
> -----Original Message-----
> From: Scott Xe
> Sent: Wednesday, May 31, 2017 08:55
>
> Is the minimum size of 5 mm relaxed to the legible reading
> in LVD and RED? Where and when does it introduce?
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