Hi David
There is no 2013 version of EN50130-4.
The last full version was in 2011, followed by a 2014 amendment (A1)
Although A1 was voted positively over a year ago, the European commission has
still not yet managed to actually post the document in the OJEU!
Technically speaking for the
Hi Scott:
When a switch opens (at something other than the
zero-crossing), an arc is created and molten metal
of the contacts is likely. (In fact, some contact
designs use the molten metal to re-form the
contacts.)
The molten metal is accelerated (at right angles
to the current direction) by
As the appliance is a toaster, could the switch area have been contaminated
by carbonized bread particles and/or burnt residue (raisins, glaze
drippings)? This might account for the length of arcing, although you would
think that good design would include a shield to keep such residue away from
Dear Members,
I recently encountered a symptom on a toaster. When turning off by pressing
the quit button, there was an arc flash from the mains switch contacts to
earthed parts where the separation greater than 1 inch apart in air
occasionally. The mains contacts have a sign of
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