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    The meaning of protection degree code

    Protection degree for nonego
     
    Character No.
    Character sign
    Brief description
    Type Number Nomenclature
    ×
     Exempt from testing

     While omitting and don't mark the protection charater

     Exempt from protection

     Without special protection

    1

     Protected against
     solid bodies whose
     Dia.less than 50mm
     It can protect against solid boies that Dia less than 50mm from
     coming into shell. And protect parts of person, which is large
     area (for example hand), from touching the electriferous or
     working elements inside of the shell by accident. It can't
     prevent from approaching the machine on purpose.
    2

     Protected against
     solid bodies whose
     Dia. not less than
     12.5mm
     It can protect against the solid bodies whose Dia. is more than
     12mm and length is less than 80mm from coming into shell, and
     prevent the fingers from  touching the electriferous or working
     elements inside of the shell.
    3

     Protected against 
     solid bodies whose
     Dia. not less than
     2.5mm
     It can protect against the solid bodies that Dia is more than
     2.5mm from coming into shell, and prevent tools and metal lines
     that the thickness or dia. are more than 2.5mm from touching the
     electriferous or working elements inside of the shell.
    4

     Protected solid bodies
     whose Dia. not
     less than 1mm
     It can protect against the solid bodies that Dia or thickness
     are  more than 1mm from coming into shell, and prevent tools
     and metal lines that the thickness or dia.are more than 1mm
     from touching the electriferous or working
     elements inside of the shell.
    5

     Protected against dust
     Can't downright avoid dust coming into shell, but the inlet dust can't  affect the machine working 
    6

     Completely protected against dust

     Without dirt coming into the shell

    ??1 2 ??

        
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