I'm familiar with class x and y so called safety caps.
I just heard that there is another rating that replaces both of these, is this true, how can one cap replace one that fails open and another that fails short?
class y caps dont fail short...very few things fail short.........they may burn to a short for a small interval, but the short will burn itself out and go open.........for things to fail, and stay as a short circuit, their short circuit current is usually limited by something so that they dont burn open.
it is one of those things invented by a physicist. A "meta-failure" - both open and closed at the same time.
I think they are marketed as "Schrödinger's Cap".
it is one of those things invented by a physicist. A "meta-failure" - both open and closed at the same time.
I think they are marketed as "Schrödinger's Cap".
Schrodinger's Cap is a reference to "Schrodinger's Cat" thought experiment were he compares nuclear decay of a specific atom to whether a cat in a box is alive or dead - he describes the cat as simultaneously alive and dead until we look.
As far as I know, class Y caps must not fail short, so that they don´t endanger human lives. Class X must not fail in such way that they cause a fire. This does not mean they have to fail shorted.
let me google that for us.... and the answer is, obviously,...
Neither. The two cap classes are certified for two different purposes, according to KEMET.