My head is sconed and need the assistance of my learned forum members. I had it clear in my head but when I wanted to express it my way, I've got myself confused with all the different interpretations over the net (and I don't have the £150 for BS EN 60529
Once I've written this it will probably be all clearer anyway so here goes...
IP4X
GN3 states protection afforded is "Protection against the entry of wires.... greater than 1.0mm and solid objects exceeding 1.0mm in diameter" The test is made with a piece of wire 1mm + 0.05/0 mm (<<what ever that means). This tells me the test wire is not 1.0mm but actually a little larger, hence, not being able to enter a 1.0mm opening. So IP4X has to pass two tests, 1. Prevention of entry of the test wire and 2. Preventions of entry of objects greater than 1.0mm
This also tells me that 1.0mm wires can enter, which is contrary to pretty much all of the internet postings.
Now...
IPXXD
This time the top of the enclosure may allow the entry of the test wire but due to its stated length of 100mm it will not touch anything live within the enclosure. This means objects greater than 1.0mm will enter but will remain clear of live parts.
Give me a slap and tell me I am right please. If I am not slap me any and tell me why.
Once I've written this it will probably be all clearer anyway so here goes...
IP4X
GN3 states protection afforded is "Protection against the entry of wires.... greater than 1.0mm and solid objects exceeding 1.0mm in diameter" The test is made with a piece of wire 1mm + 0.05/0 mm (<<what ever that means). This tells me the test wire is not 1.0mm but actually a little larger, hence, not being able to enter a 1.0mm opening. So IP4X has to pass two tests, 1. Prevention of entry of the test wire and 2. Preventions of entry of objects greater than 1.0mm
This also tells me that 1.0mm wires can enter, which is contrary to pretty much all of the internet postings.
Now...
IPXXD
This time the top of the enclosure may allow the entry of the test wire but due to its stated length of 100mm it will not touch anything live within the enclosure. This means objects greater than 1.0mm will enter but will remain clear of live parts.
Give me a slap and tell me I am right please. If I am not slap me any and tell me why.