Original article by Mai Cable, illegal loading must be investigated!
Abstract: Due to the need to label the cable model and meters on the design drawing in the electrical construction drawing, the cable model and specifications are abbreviated in limited space and can represent all meanings; Below, Mai Cable will introduce the meaning and representation of cable models, as well as the selection of cable models and a comprehensive list of cable specifications.
1、 Meaning of cable model
The meaning of cable model mainly consists of five parts: category+conductor+insulation+inner sheath+characteristics. Some parts can be omitted and not written out, such as the category of power cable that can be omitted, and the conductor T copper wire that can be written out. For specific information, it is necessary to refer to the corresponding cable model and identify the rules in it.
Meaning of cable model
2、 Method and pattern of cable model representation
In addition to the English alphabet, the cable model is represented by numbers: for example, YJV23 cable model, YJ is cross-linked polyethylene insulation, V PVC inner sheath, 2 is double steel tape armouring, and 3 is polyethylene outer sheath. That is to say, the number after the cable model indicates armored cable, and steel strip armor plays a role in protecting the interior of the cable. Generally, buried cables with armor are mostly used.
Cable model representation method
Meaning rule of cable model: characteristics+cable English alphabet+with or without armor - rated voltage - number of cores+sectional area, for example: ZR-YJV22-0.6/1kv -3 * 150+1 * 95, which represents the rated voltage of flame-retardant cross-linked polyethylene insulated PVC sheathed copper core power cable of 0.6/1kv, consisting of three 150mm2 and one 95mm2 copper core to form a four core cable.
The typical characteristics of cable models are:
Y - Prefabricated, generally omitted, or polyolefin sheathed;
FD - Product category code, referring to branch cables. The standards to be issued by the Ministry of Construction are represented by FZ, which is essentially the same;
ZR - Flame retardant NH - Fire resistant WDZ - Halogen free low smoke flame retardant WDN - Halogen free low smoke fire resistant;
3、 Complete list of commonly used cable models and 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