2.1.1
K: Rubber cross in the core of the cable
C: Conductive metallic sheath over the stranded conductors or between inner and outer sheaths
CG: Conductive non-metallic sheath over the stranded conductors or between inner and outer sheaths
CE: Conductive metallic sheath over the insulating sheaths of the outer conductor
CGE: Conductive non-metallic sheath over the insulating sheaths of the outer conductor
R: Round wire reinforcement
RL: Reinforcement made of round wire strands
2.1.2
/3: Protective conductor evenly distributed in the interstices
/3E: Protective conductor evenly distributed over the insulating sheaths of the outer conductor
KON: Concentrically arranged protective conductor between inner and outer sheaths
ST: Control element inside the cable
FM: Monitoring element inside the cable
ÜL: Monitoring lines inside the cable