The standards used to produce these wires in Iran are the ISIRI 607-3 standard, which of course is the international equivalent of IEC 60227-3.
These wires are commonly used for home use, lighting systems and control panels.
The following table shows the characteristics of the above abbreviations:
|H||Designed based on harmonized standards|
|K||Flexible conductor (Class 5)|
|U||Solid conductor (Class 1)|
|R||Stranded conductor (Class 2)|