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?
1. The naming of wire and cable products has the following principles:
1. What is included in the product name.
1) product application name or size grade
2) Material or type of product structure;
3) Important features or additional features of the product
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 application of wire and cable is mainly divided into three categories:
1, power system
The wire and cable products used in the power system mainly include overhead bare wires, buses (bus bars), power cables (plastic cables, oil-paper power cables (basically replaced by plastic power cables), rubber cables and overhead insulated cables), branch cables (replacing some buses), electromagnetic wires and wires and cables for electrical equipment.
2. Information transmission system
The wires and cables used in the information transmission system mainly include local telephone cables, television cables, electronic cables, radio frequency cables, optical cables, data cables, electromagnetic cables, power communication or other composite cables.
3, mechanical equipment, instrument system
This part is applicable to almost all other products except overhead bare wires, but mainly power cables, electromagnetic wires, data cables, instrument cables and so on.
3. Wire and cable products are mainly divided into five categories:
1, bare wire and bare conductor products
The main characteristics of this kind of products are: pure conductor metal, without insulation and sheath, such as steel-core aluminum stranded wire, copper-aluminum bus, electric locomotive wire and so on. The processing technology is mainly pressure processing, such as melting, calendering, stretching, twisting/compression twisting, etc. Products are mainly used in suburbs, rural areas, main lines of users, switch cabinets and so on.
2. Power cable
The main characteristics of this kind of products are: extruding (winding) insulation layer outside the conductor, such as overhead insulated cable, or multi-core stranded (corresponding to phase, neutral and ground wires of power system), such as overhead insulated cable with more than two cores, or adding sheath layer, such as plastic/rubber sheathed wire and cable. The main technologies include drawing, winding, insulation extrusion (winding), cabling, armoring, sheath extrusion and so on. There are some differences in different process combinations of various products.
Products are mainly used for the transmission of high-voltage electric energy in power generation, distribution, transmission, substation and power supply lines, with large current (tens of amperes to thousands of amperes) and high voltage (220V to 500kV and above).
3. Wires and cables for electrical equipment
The main characteristics of this kind of products are: many varieties and specifications, wide application range, and the application voltage is mostly 1kV and below. Facing special occasions, new products are constantly derived, such as fire-resistant cables, flame-retardant cables, wdz/wdz, termite-proof cables, rat-proof cables, oil-resistant/cold-resistant/temperature-resistant/wear-resistant cables, medical/agricultural/mining cables, thin-walled wires and so on.
4. Communication cables and optical fibers (our company does not produce such products at present, so we pretend to introduce them briefly).
In the past twenty years, with the rapid development of communication industry, products have also developed at an amazing speed. From simple telephone and telegraph cables in the past to thousands of pairs of telephone cables, coaxial cables, optical cables, data cables and even combined communication cables.
This kind of products usually have small and uniform structural dimensions and require high manufacturing accuracy.
5. Electromagnetic wire (winding wire) (our company does not produce this kind of product at present, please briefly introduce it)
Mainly used in various motors, instruments and meters, etc.
Four. The order of structure description is as follows:
The product structure is described according to the principle from the inside out: conductor-> conductor; Insulation->; Inner sheath->; External sheath->; Armor type.
Simplification omits or abbreviates some structural descriptions without causing confusion. For example, aluminum conductors are not allowed to be used in automobile wires and flexible cords, so conductor materials are not described.
Shell: 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 "-emphasized characteristics.
Copper core "-conductor material
XLPE insulation "-insulation material
Steel belt armoring "-material and type of armoring layer (double steel belt gap packaging)
PVC sheath "-inner and outer sheath materials (the inner sheath material is omitted).
Power cable "-the category name of the product.
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 is that 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: category, use 2: conductor 3: insulation 4: inner sheath 5: structural features 6: outer sheath or derivative 7: manganese 1-5 and item 7 are represented by pinyin letters, and polymer materials are represented by English initials, and each item can be 1-. 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. Power cable armoring and outer sheath Numeric marking 0 No- 1 Interlocking armored fiber outer sheath 2 double-layer steel belt PVC outer sheath 3 thin round steel wire polyethylene outer sheath 4 thick round steel wire -5 corrugated (embossed) steel belt -6 double aluminum (or aluminum alloy) belt -7 copper wire weaving -8 steel wire weaving-