The first letter in the code represents the conductor material used in the cable model. For example:
- C: Copper conductor
- A: Aluminum conductor
- S: Silver-plated copper conductor
The second letter indicates the insulation material used to protect and insulate the conductors within a cable model:
- P: Polyethylene insulation
- E: Ethylene propylene rubber insulation (EPDM)
- X: Cross-linked polyethylene insulation (XLPE)
The third letter signifies the jacket or sheath material that provides additional protection to cables:
< p > - P:PVC(Polyvinyl Chloride)jacket < p > - L : Low smoke zero halogen(LSZH)jacket < p > - H : High-density polyethylene(HDPE)jacket 2.Insulation Type The type of insulation utilized in a cable plays a vital role in its electrical properties and overall performance. < h 3 > 2 . 1 Solid Insulation< / h 3 > < P > Solid insulation refers to an uninterrupted layer surrounding each individual conductor within a multi-conductor ca ble.This type o f i nsu lation is commonly represented by t he let ter ' S ' i n c able m odels M YP . I t provi des exc ellent electrical properties an d resistan ce against environmental factors such as moisture an d chemicals.< / P > < h 4 >2 . 2 Foamed I nsul ation< / h4 >Foamed insula tion is characterized by tiny air pockets within th e insulating ma terial.These air pockets improve thermal resistance , reduce capacitance ,and enhance signal transmission efficiency.The lette r ' F' typically represents foamed insulatio n i n c able mod els MY P.
2 .5 Skin-Foam-Skin Insula tionSkin-foam-skin (SFS )insu lation consists o f two solid layers sandwiching a foam layer.This configuration offers excellent dielectric strength while maintaining flexibility.The lett er'S'indicates skin-foam-ski n insulat ionin cabl e mode lsMYP.