Iyabo
KKS tagging system, as far as I know is only taught by the OEM’s from Europe, That would be Siemens and ABB or Alstom Power. I was taught the system by both companies however I think there may be somewhere you can purchase a book to teach you. I would think if you were working in a power plant that used hardware from either of the above companies, there would be a Tab in one of the user’s manual that introduces you to the KKS system.
Why do you need to know this system?
Romefu12