First, wire and cable products are mainly divided into five categories:
1. Bare wire and bare conductor products
The main features of this product are: pure conductor metal, no insulation and sheath layer, such as steel core aluminum stranded wire, copper-aluminum busbar, electric locomotive line, etc.; processing technology is mainly pressure processing, such as smelting, rolling, pulling System, stranding/tightening stranding, etc.; products are mainly used in suburbs, rural areas, user main lines, switch cabinets, etc.
2, power cable
The main features of this type of product are: extrusion (winding) insulation on the outer conductor, such as overhead insulated cable, or stranding (corresponding to the phase, neutral and ground of the power system), such as overhead insulated cables with two cores or more , or add a jacket layer, such as plastic / rubber sheathed wire and cable. The main process technologies include drawing, stranding, insulation extrusion (winding), cable-forming, armoring, and sheath extrusion. The different process combinations of various products have certain differences.
The products are mainly used for transmission of strong electric energy in the transmission, distribution, transmission, transformation and power supply lines. The current passing through is large (tens of amps to several thousand amps) and the voltage is high (220V to 500kV and above).
3. Wire and cable for electrical equipment
The main features of this type of product are: wide variety of specifications, wide application range, use voltages of 1kV and below, and new products such as fire-resistant cables, flame-retardant cables, low-smoke halogen-free/low Smoke low halogen cable, termite resistant, mouse cable, oil/cold resistant/temperature resistant/wear resistant cable, medical/agricultural/mineral cable, thin wall wire, etc.
4, communication cable and optical fiber (the company does not currently produce such products, so a brief introduction)
With the rapid development of the communication industry in the past two decades, the products have also experienced phenomenal development speed. From the simple telephone telegraph cable in the past to thousands of pairs of cable, coaxial cable, optical cable, data cable, and even a combination of communication cables.
The structure size of such products is usually small and uniform, and the manufacturing precision is high.
5, electromagnetic wire (winding wire) (the company does not currently produce such products, so a brief introduction)
Mainly used in various motors, instruments and so on.
Derivatives/new products for wire and cable:
The derivative/new products of wire and cable are mainly based on the requirements of application, application requirements, equipment convenience and equipment cost reduction, and adopt new materials, special materials, or change product structure. 11. Look for 蟆11.蚪What is the value of the glory?
Use different materials such as flame-retardant cables, low-smoke halogen-free/low-smoke low-halogen cables, termite-proof, mouse-proof cables, oil/cold/temperature resistant cables, etc.
Change product structure such as: fire resistant cable;
Improve process requirements such as: medical cables;
Combination products such as: OPGW;
Easy to install and reduce equipment costs such as: prefabricated branch cables.
Two cable models - wire and cable specifications - shielded cable models - control cable models - communication cable models - mining communication cable models - armored cable specifications models China Cable Network -
1) Category: H - city communication cable
HP - distribution cable
HJ - office cable
(2) Insulation: Y - solid polyolefin insulation
YF - foamed polyolefin insulation
YP - foam / solid leather polyolefin insulation
(3) Inner sheath: A——plastic coated aluminum tape bonded shielded polyethylene sheath
S——Aluminum, steel double metal strip with shielded PE sheath
V——polyvinyl chloride sheath
(4) Features: T - petroleum paste filling
G - high frequency isolation
C——self-supporting
(5) Outer sheath: 23——double-layer anticorrosive steel strip wrapped with pinned polyethylene outer layer
33——Single layer of thin steel wire armored polyethylene layer xianlan315.com
43——Single layer thick steel wire armored polyethylene layer
53——Single layer steel wrinkled longitudinally wrapped armored polyethylene outer layer
553——double layer steel wrinkle longitudinally armored polyethylene outer layer
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 cable cord;
BVS copper core PVC insulated stranded cord;
RVV copper core PVC insulated PVC sheathed cord;
BYR polyethylene insulated soft wire;
BYVR polyethylene insulated PVC sheathed cord;
RY polyethylene insulated cord;
RYV polyethylene insulated PVC sheathed cord
3) The cable model consists of eight parts:
First, the use code - not marked as power cable, K is the control cable, P is the signal cable;
Second, the insulation code - Z oil-impregnated paper, X rubber, V polyvinyl chloride, YJ cross-linked polyethylene
Third, the conductor material code - not marked as copper, L is aluminum;
Fourth, inner sheath code - Q lead package, L aluminum package, H rubber sleeve, V polyvinyl chloride sheath
Fifth, the derivative code -D does not drip, P dry insulation;
Sixth, the outer layer code
Seven, special product code -TH wet tropics, TA dry tropics;
Eight, rated voltage - unit KV
Question about cable model
1, SYV: solid polyethylene insulated RF coaxial cable
2, SYWV (Y): physical foaming polyethylene insulated cable TV cable, video (RF) coaxial cable (SYV, SYWV, SYFV) for closed-circuit monitoring and cable TV engineering
SYWV (Y), SYKV cable TV, broadband network dedicated cable structure: (coaxial cable) single oxygen-free round copper wire physical foaming polyethylene (insulation) (tin wire aluminum) polyvinyl chloride (polyethylene)
3. Signal control cable (RVV sheathed wire, RVVP shielded wire) is suitable for building intercom, anti-theft alarm, fire protection, automatic meter reading and other projects.
RVVP: copper core PVC insulated and shielded PVC sheathed flexible cable voltage 300V/300V2-24 core
Uses: instruments, instruments, intercom, monitoring, control installation
4. RG: physical foamed polyethylene insulated access network cable for transmitting data analog signals in coaxial fiber hybrid network (HFC)
5, KVVP: PVC sheathed braided shielded cable Uses: signal transmission, control, measurement of electrical appliances, instruments, power distribution devices
6, RVV (227IEC52/53) PVC insulated flexible cable use: household appliances, small power tools, instruments and power lighting
7, AVVR PVC sheathed installation soft cable
8. SBVVHYA data communication cable (indoor and outdoor) for telephone communication and connection of radio equipment and wiring box wiring for telephone wiring network
9, RV, RVP PVC insulated cable
10, RVS, RVB is suitable for household appliances, small power tools, instruments, meters and power lighting connection cables
11. BV, BVR PVC insulated cable Uses: Suitable for electrical instrumentation equipment and power lighting fixed wiring
12, RIB speaker cable (fever line)
13, KVV PVC insulated control cable use: electrical, instrumentation, power distribution equipment signal transmission, control, measurement
14, SFTP twisted pair transmission telephone, data and information network
15, UL2464 computer cable
16, VGA display line
17, SYV coaxial cable wireless communication, broadcasting, monitoring system engineering and related electronic equipment transmission of RF signals (including integrated coaxial cable)
18, SDFAVP, SDFAVVP, SYFPY coaxial cable, elevator-specific
19. JVPV, JVPVP, JVVP copper core PVC insulated and sheathed copper wire braided computer control cable
Third, wire and cable naming and model
Naming principles and cases:
The complete naming of wires and cables is often complicated, so people sometimes use a simple name (usually a category name) in combination with the model specification instead of the full name, such as "low voltage cable" for all plastic insulated power of 0.6/1kV class. cable. The wire and cable type spectrum is relatively perfect. It can be said that as long as the standard model specifications of the wire and cable are written, the specific product can be specified, but what is its complete name?
The naming of wire and cable products has the following principles:
1. Content included in the product name
(1) Product application or size class name
(2) product structure materials or types;
(3) Important or additional features of the product
Basically named in the above order, sometimes in order to emphasize important or additional features, the features are written before or before the corresponding structure description.
2, the order of structure description
The product structure is described from the inside to the outside: conductor -> insulation -> inner sheath -> outer sheath -> armored type.
3, simplified
In the case of no confusion, some structural descriptions are written or abbreviated. For example, aluminum conductors are not allowed in automobile wires and cords, so conductor materials are not described.
Case:
Flame-retardant copper core XLPE insulated steel tape armored PVC sheathed power cable with rated voltage of 8.7/15kV
"Rated voltage 8.7/15kV" - use occasion / voltage level
"Flame retardant" - the characteristics of emphasis
"Copper core" - conductor material
"Crosslinked Polyethylene Insulation" - Insulation
"Steel belt armor" - armor layer material and type (double steel belt gap wrapping)
"PVC sheath" - inner and outer sheath material (the inner and outer sheath materials are the same, save the inner sheath material)
"Power Cable" - the broad name of the product
The corresponding model is written as ZR-YJV22-8.7/15. The model is written as described below.
Wire and cable distinction
In fact, there are no strict boundaries between "wires" and "cables." Generally, a product with a small number of cores, a small product diameter, and a simple structure is called a wire, a non-insulated wire is called a bare wire, and the other is called a cable; a conductor having a large cross-sectional area (greater than 6 square millimeters) is called a large wire. Small (less than or equal to 6 square millimeters) is called a small wire, and insulated wire is also called a wire.
The model and sequence of wire and cable are as follows:
[1: Category, use]
[2: Conductor]
[3: Insulation]
[4: inner sheath]
[5: Structural Features]
[6: outer sheath or derivative]
[7: Make manganese bismuth]
Items 1-5 and 7 are indicated by pinyin letters, and polymer materials are indicated by the first letter of the English name, each item can be 1-2 letters; the sixth item is 1-3 numbers.
Omitted principle in the model: Copper is the main conductor material used in wire and cable products, so the copper core code is written in T province, except for bare wires and bare conductor products. Bare wire and bare conductor products, power cables, and electromagnetic wire products do not indicate large class codes. Wires and cables for electrical equipment and communication cables are not listed, but subcategories or series codes are listed.
Item 7 is a mark for various special use occasions or additional special use requirements, and is marked with a pinyin after "-". Sometimes in order to highlight the item, write this item to the front. Such as ZR- (flame retardant), NH- (refractory), WDZ- (low smoke and halogen free, corporate standards), -TH (for hot and humid areas), FY- (anti-termites, corporate standards).
Power cable armor and outer sheath figures
Digitally marked armor layer outer jacket or outer jacket
0 no---
1 interlocking armored fiber outer cover
2 double-layer steel belt PVC jacket
3 fine round steel wire polyethylene jacket
4 thick round wire ---
5 wrinkle (rolled) steel belt ---
6 double aluminum (or aluminum alloy) belt ---
7 copper wire weaving ---
8 steel wire weaving ---
Wire and cable product classification
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, bus bars (bus bars), power cables (plastic cables, oil-paper cables) (basically by plastics).
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