DSH 511 Creepage distances, clearances and distances through insulation
http://decisions.iecee.org/icons/ecblank.gif DSH 511
Creepage distances, clearances and distances through insulation
29.2
60335-1(ed.3)
Question:
The requirement of IEC 60742 for distance through insulation between primary and
secondary winding is 1 mm. According to IEC 60335-1:1991, if the secondary winding is
accessible there is requirement for 2 mm for distance through insulation of primary and
secondary winding. In general the delegates agreed unanimously that in this case
transformers are accepted when tested or certified according to IEC 60742 or annex R, even
if the standard is not very clear regarding the sub-clause of annex R.
Rationale:
See question.
Decision:
The transformer standard is applicable.
页:
[1]
