Naming principles and cases:
The complete naming of wires and cables is usually complicated, so people sometimes replace the complete name with a simple name (usually the name of a category) combined with model specifications. For example, "low voltage cable" represents all plastic insulated power cables of 0.6/ 1kV class. The type spectrum of wires and cables is relatively perfect. It can be said that as long as the standard model specifications of wires and cables are written, a specific product can be defined, but what is its complete name?
The naming of wire and cable products has the following principles:
1. What is included in the product name.
Basically, they are all named in the above order. Sometimes, in order to emphasize important or additional features, features are written before or before the corresponding structural description.
2, the order of the structure description
The product structure is described according to the principle from the inside out: conductor-> conductor; Insulation->; Inner sheath->; External sheath->; Armor type.
Step 3 simplify
In order not to cause confusion, some structural descriptions are omitted or abbreviated. For example, aluminum conductors are not allowed to be used in automobile wires and flexible cords, so conductor materials are not described.
Case:
Rated voltage 8.7/ 15kV flame retardant copper core XLPE insulated steel belt armored PVC sheathed power cable.
"Rated voltage 8.7/15kV"-application/voltage level
"Flame-retardant"-the characteristic of emphasis
"copper core"-conductor material
"XLPE insulation"-insulating material
"Steel Strip Armor"-material and type of armor layer (double steel strip gap packaging)
"PVC sheath"-inner and outer sheath materials (the inner sheath material is omitted).
"Power cable"-the general name of products.
The corresponding model is written as ZR-YJV22-8.7/ 15, and the writing of the model is described later.
The difference between wire and cable
In fact, there is no strict boundary between "wire" and "cable". Usually, products with few cores, small product diameter and simple structure are called wires, those without insulation are called bare wires, and others are called cables; A conductor with a larger cross-sectional area (greater than 6 square millimeters) is called a large conductor, a conductor with a smaller cross-sectional area (less than or equal to 6 square millimeters) is called a small conductor, and an insulated wire is also called a distribution wire.
The model composition and sequence of wires and cables are as follows:
[1: categories and uses]
[2: Command]
[3: Insulation]
[4: Internal Protective Layer]
[5: Structural Features]
[6: sheath or derivative]
[7: Manufacturing Manganese 30]
Items 1-5 and 7 are represented by pinyin letters, and polymer materials are represented by English initials, and each item can be 1-2 letters; Item 6 is the number of 1-3.
Ellipsis principle in the model: copper is the main conductor material used in wire and cable products, so the copper core code T is omitted, except bare wire and bare conductor products. Bare wires and bare conductor products, power cables and electromagnetic wires are not marked with large-scale codes, and wires and cables for electrical equipment and communication cables are not marked with large-scale codes, only small-scale or series codes are listed.
Item 7 is the identification of various special use occasions or additional special use requirements, which is marked with pinyin letters after "-". Sometimes in order to highlight this item, write this item at the front. Such as ZR- (flame retardant), NH- (flame retardant), WDZ- (low smoke and no halogen, enterprise standard), -TH (used in hot and humid areas), FY- (termite prevention, enterprise standard) and so on.
Number of armoring and outer sheath of power cable
Numerically mark the outer layer or sheath of armor layer.
0 None-
1 Interlocked armored fiber outer quilt
2 PVC sheath with double steel belts
3 thin round steel wire polyethylene sheath
4 Thick round steel wire-
5 Corrugated (embossed) steel strip-
Six double aluminum (or aluminum alloy) strips-
7 Copper wire weaving-
8 Steel wire weaving-
Classification of wire and cable products