Specification and model description of cables and wires
Cable model-wire and cable specification model-shielded cable model-control cable model-communication cable model-mine communication cable model-armored cable specification model is introduced in detail.
Cable model-wire and cable specification model-shielded cable model-control cable model-communication cable model-mine communication cable model-armored cable specification model
1) category: H- local communication cable
High voltage distribution cable
HJ- office cable
(2) Insulation: y- solid polyolefin insulation
YF foamed polyolefin insulating material
YP- Foam/Solid Polyolefin Insulation Material
(3) Inner protective layer: A—— Plastic-coated aluminum tape bonded shielding polyethylene sheath.
S—— aluminum and steel double-layer metal polyethylene sheath with shielding.
V-PVC sheath
(4) Features: T-type petroleum paste filling.
G- high frequency isolation
C- self-supporting
(5) Outer sheath: 23—— Double-layer anticorrosive steel belt with polyethylene outer sheath.
33-Single-layer thin steel wire armored polyethylene coating
43—— Single layer thick steel wire armored polyethylene coating
53—— Single-layer steel strip corrugated longitudinal wrapped armored polyethylene outer coating.
553—— Double-layer corrugated longitudinal wrapped armored polyethylene outer coating.
2) BV copper-core PVC insulated wire;
BLV aluminum core PVC insulated wire;
BVV copper core PVC insulated PVC sheathed wire;
BLVV aluminum core PVC insulated PVC sheathed wire;
BVR copper-core PVC insulated cord;
RV copper core PVC insulated installation cord;
RVB copper core PVC insulated flat connecting wire;
BVS copper-core PVC insulated stranded wire;
RVV copper core PVC insulated PVC sheathed flexible cord;
BYR polyethylene insulated cord;
Polyethylene insulated PVC sheathed flexible cord;
RY polyethylene insulated cord;
RYV polyethylene insulated PVC sheathed flexible cord
3) The cable model consists of eight parts:
1. Use code-not marked as power cable, k as control cable and p as signal cable;
Insulation code -Z oil-immersed paper, X rubber, V PVC, YJ crosslinked polyethylene.
Third, the conductor material code-not marked as copper, L is aluminum;
Four. Inner sheath code -q lead sheath, L aluminum sheath, H rubber sheath, V PVC sheath.
Verb (abbreviation of verb) derives the code -D does not drip, P is dry and insulated;
Six, the outer sheath code
Seven, specialty code-TH humid tropical zone, TA dry tropical zone;
Eight, rated voltage-unit KV
Questions about cable models
1, SYV: solid polyethylene insulated RF coaxial cable
2. SYWV (Y): Physical foamed polyethylene insulated cable for CATV system, and video (radio frequency) coaxial cables (SYV, SYWV, SYFV) are suitable for closed-circuit monitoring and CATV engineering.
Special cable structure for SYWV(Y), SYKV CATV and broadband network: (coaxial cable) Single oxygen-free round copper wire physical foamed polyethylene (insulation) (tin wire aluminum) polyvinyl chloride (polyethylene).
3. Signal control cables (RVV sheath line and RVVP shielded wires) are suitable for building intercom, burglar alarm, fire fighting, automatic meter reading and other projects.
RVVP: Copper conductor PVC insulated shielded PVC sheathed flexible cable voltage 300V/300V2-24 cores.
Uses: Instruments, meters, intercom, monitoring installation.
4.RG: Physical foamed polyethylene insulated access network cable is used to transmit data analog signals in coaxial optical fiber hybrid network (HFC).
5.KVVP: PVC sheathed braided shielded cable uses: signal transmission, control and measurement of electrical appliances, instruments and distribution devices.
6.RVV(227IEC52/53) PVC insulated flexible cable uses: household appliances, small power tools, instrumentation and dynamic lighting.
7. Flexible cable for installing AVVR PVC sheath
8.SBVV HYA data communication cables (indoor and outdoor) are used for telephone communication, connection of radio equipment and wiring of telephone distribution network junction boxes.
9.RV and RVP PVC insulated cables
10, RVS and RVB are suitable for connecting cables of household appliances, small electric tools, instruments, meters and power lighting.
1 1, BV, BVR PVC insulated cable uses: suitable for fixed wiring of electrical instruments and power lighting.
12, Ribbed Speaker Connection Line (Heating Line)
13, KVV PVC insulated control cable uses: signal transmission, control and measurement of electrical appliances, instruments and power distribution devices.
14, SFTP twisted-pair transmission telephone, data and information network
15, UL2464 computer connection cable
16, VGA monitor cable
17, SYV coaxial cable wireless communication, broadcasting, monitoring system engineering and related electronic equipment for transmitting RF signals (including integrated coaxial cable)
Coaxial cable for elevator 18, SDFAVP, SDFAVVP, SYFPY.
19, JVPV, JVVP, JVVP copper core PVC insulated and sheathed copper wire braided computer control cable
Name and model of wire and cable
Name and model of wire and cable
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.
(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 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-wire and cable product classification
The applications of wires and cables are 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.
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.
Derivatives/new products of wires and cables:
The derivative/new products of wires and cables are mainly due to the requirements of different applications, application requirements, convenience of equipment, and reduction of equipment costs. Adopt new materials and special materials, or change the product structure to adopt different materials such as flame-retardant cable, low-smoke halogen-free/wdz, termite-proof cable, rat-proof cable, oil-resistant/cold-resistant/temperature-resistant cable, etc.
Change the product structure, such as fire-resistant cables;
Improve the technological requirements of medical cables;
Combined products such as OPGW；;
Convenient installation, reducing the cost of equipment, such as prefabricated branch cables.