Roland chung
Trusted Information Resource
Hello folks,
According to the standard, creepage and clearance between parts of opposite polarity are required before primary fuses. But test house told me that our product failed the standard because the spacing across the surface of the PWB between the solder eyes of the fuse input/output leads is less than 3 mm. The test house said if the spacing under the fuse is too tight, the fuse would be short-circuited and therefore lose its function.
I think spacing under fuse complying with functional insulation is sufficient. As there are no requirements for functional insulation in IEC 60601-1, it seems not reasonable to require the spacing under fuse to meet 3 mm.
Could I have your opinions?
Thanks,
Roland
According to the standard, creepage and clearance between parts of opposite polarity are required before primary fuses. But test house told me that our product failed the standard because the spacing across the surface of the PWB between the solder eyes of the fuse input/output leads is less than 3 mm. The test house said if the spacing under the fuse is too tight, the fuse would be short-circuited and therefore lose its function.
I think spacing under fuse complying with functional insulation is sufficient. As there are no requirements for functional insulation in IEC 60601-1, it seems not reasonable to require the spacing under fuse to meet 3 mm.
Could I have your opinions?
Thanks,
Roland