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Common cable model and cable model meaning representation method and cable specification encyclopedia (collection)

Industry news
2021/06/24 17:03

Cable model
   Mailan original, stealing must be investigated!
Abstract: Because electrical engineering drawings need to mark the cable model meters and meters on the design drawings, the cable model specifications are abbreviated in a limited space and can represent all meanings; the following will introduce the meaning and representation method of the cable model, and the cable model Encyclopedia of selection and cable specifications.
   One, the meaning of the cable model
The meaning of the cable model is mainly composed of five parts: category + conductor + insulation + inner sheath + characteristics, some of which can be omitted and not written out. For example, the type of power cable does not need to be expressed, and the conductor T copper wire does not need to be written out. And so on, you should refer to the corresponding cable model to find out the rules and it is easy to identify.
   Cable model meaning
   Two. Cable model representation method and law
In addition to the English letters, the cable model also adds numbers: For example, YJV23 cable model, YJ is XLPE insulation, V PVC inner sheath, 2 means double steel tape armor, 3 means outer sheath is polyethylene . That is to say, the number at the back of the cable model indicates the armored cable, and the steel tape armor protects the inside of the cable. Generally, most of the armored cables are buried in the ground.
   Cable model representation method
The meaning of the cable model: characteristics + English letters of the cable + with or without armor-rated voltage-number of cores + cross-sectional area, for example: ZR-YJV22-0.6/1kv-3*150+1*95, which means flame-retardant cross-linked polymer Ethylene insulated and PVC sheathed copper core power cable with a rated voltage of 0.6/1kv, composed of three copper cores of 150mm2 and one copper core of 95mm2 into a 4-core cable.
   Cable models generally indicate characteristics:
  Y—prefabricated type, generally omitted, or polyolefin sheath;
  FD—Product category code, refers to branch cables. The Ministry of Construction standards to be promulgated are denoted by FZ, which are essentially the same;
   ZR—flame-retardant type NH—fire-resistant type WDZ—halogen-free low-smoke flame-retardant type WDN—halogen-free low-smoke flame-retardant type;
   Three, common cable model specifications
  1, VV cable model
  VV cable model
  2, YJV cable model
  YJV cable model
  3, other wire and cable models
  Wire and cable model

Common cable model and cable model meaning representation method and cable specification encyclopedia (collection)