We must not have paid attention to the specifications and models of some tools in life, such as cables, probably only the relevant manufacturers of the company's professionals on the specifications and models of cables have had a very deep understanding, in fact, our cable specifications and models, you listen to perhaps just two simple terms, but which contains many aspects of the content, we can all come together to understand our cable Specification contains a lot of content as well as the cable model of the relevant content, you can distinguish.
Cable specifications is the meaning of the wire and cable core number and cross-section size of the representation.
A: the meaning of the relevant abbreviations
RVVP: copper-core polyvinyl chloride insulation shielded polyvinyl chloride sheathed flexible cable voltage 300V/300V?2-24 coresRG: Physical foamed polyethylene insulated access network cables are used for coaxial fiber-optic hybrid network (HFC) for transmitting data analog signals
UTP: LAN cable use: transmission of telephone, computer data, fire, burglary security systems, intelligent building information network
KVVP: PVC sheath braided shielded cable use: electrical appliances, instruments, power distribution devices, signal transmission, control, measurement
SYWV (Y), SYKV? cable TV, broadband network cable structure: (coaxial cable) Single oxygen-free round copper wire + physical foaming polyethylene (insulation) + (tin wire + aluminum) + polyvinyl chloride (polyethylene)
RVV (227IEC52/53) PVC-insulated flexible cables Usage: Household appliances, small power tools, instrumentation, and power lighting
AVVR?PVC-sheathed flexible cable for installation
SBVV?HYA? Data communication cable (indoor and outdoor) for telephone communication and radio equipment connection and telephone wiring network distribution box wiring
RV, RVP?PVC insulated cables
BV, BVR?PVC insulated cables for electrical instrumentation and power lighting fixed wiring
RIB?Speaker connecting cable (audiophile cable)
KVV? p>
KVV?PVC insulated control cable use: electrical appliances, instrumentation, power distribution equipment signal transmission, control, measurement
SFTP?Twisted pair transmission of telephone, data and information networks
UL2464?Computer connecting cable
two: VGA?Display cable
SYV?Coaxial cable wireless communications, broadcasting, monitoring systems engineering and related electronic equipment in the transmission of radio frequency signals (including integrated coaxial cable)
SDFAVP, SDFAVVP, SYFPY?Coaxial cable, elevator special
JVPV, JVPVP, JVVP?Copper-core polyvinyl chloride insulation and jacketed with copper wire braided electronic computer control cables
Three: specifications
1. Usual expression①Single-core branch cable specifications: the same circuit cable root * (1 * nominal cross-section
wire cable wire and cable), ?0.6/1KV, such as: 4 * (1 * 185) +1 * 95?0.6/1KV
①Multi-core branch cable specifications: the same circuit cable root * (1 * nominal cross-section
Wire Cable Wire Cable), ?0.6/1KV
②Multi-core with the sheath type branch cable specifications: cable core × nominal cross-section - T, such as: 4 × 25-T
2. Detailed representation
Because the branch cable contains the trunk cable and branch cable. And the two specifications of the structure is different, so there are two methods of expression:
①The trunk cable and branch cable are expressed separately,
such as: trunk cable: FD-YJV-4*(1*185)+1*95?0.6/1KV
Branch cable: FD-YJV-4*(1*25)+1*16?0.6/1KV
This method is particularly concise in design, and can easily indicate the difference in branch line specifications
②The trunk cable and branch line cables are indicated together, such as: FD-YJV-4
Wire cable specificationsWire cable specifications
*(1*185/25)? +1*95/160.6/1KV
This method is more intuitive, but is limited to the branch cable for the same specification, can not indicate the different specifications of the branch:
Since the branch cable is mainly used for 1KV low-voltage distribution system, so its rated voltage of 0.6/1KV in the design of the labeling, can be omitted.
One cable model - wire cable specification model - shielded cable model - control cable model - communication cable model - mining communication cable
Four: Model - armored cable specification model
1)? Category: H--Municipal communication cable
HP--Wiring cable
HJ--Local cable
(2)Insulation: Y -- solid polyolefin insulation
YF -- foam polyolefin insulation
YP -- foam/solid skin polyolefin insulation
(3 ) Inner Sheath: A - Plastic coated aluminum tape bonded shielded polyethylene sheath
S - Aluminum, steel double metal tape shielded polyethylene sheath
V - Polyvinyl chloride sheath
(4) Characteristics: T - petroleum paste filling
G - high-frequency isolation
C - self-supporting type
(5) Sheath: 23 - double-layer anticorrosive steel tape wrapped around the pin-mounted polyethylene cover layer
33 - single-layer fine steel wire armored polyethylene cover layer
43- Single-layer thick steel wire armored polyethylene cover
53--Single-layer crumpled longitudinal wrapped armored polyethylene cover
553--Double-layer crumpled longitudinal wrapped armored polyethylene cover
533--Double-layer crumpled longitudinal wrapped armored polyethylene cover
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-sheathed wire;
BVR? RV?Copper core PVC insulated installation flexible wire;
RVB?Copper core PVC insulated flat connecting wire flexible wire;
BVS?Copper core PVC insulated stranded flexible wire;
RVV?Copper core PVC insulated PVC sheathed flexible wire;
BYR?Polyethylene insulated flexible wire;
BYVR? insulated PVC sheathed flexible wire;
RY?Polyethylene insulated flexible wire;
RYV?Polyethylene insulated PVC sheathed flexible wire
3)? The type of cable consists of eight parts:
I. Use code-not marked as power cable, K as control cable, P as signal cable;
II. Insulation code-Z oil-impregnated paper, X rubber, V polychlorinated ethylene, YJ crosslinked polyethylene
III. Conductor material code-not marked as copper, L aluminum;
IV. Inner sheath code-Q lead clad, L aluminum clad. H rubber jacket, V polychlorinated ethylene sheath
V. Derived code-D non-drip, P dry insulation;
VI. Outer sheathing code
VII. Special product code-TH wet heat tape, TA dry heat tape;
VIII. Rated voltage-unit KV
V: Questions about the cable model number
1, SYV: solid polyethylene insulated radio frequency coaxial cable
2, SYWV (Y): physical foaming polyethylene insulated cable for cable television systems, video (radio frequency) coaxial cable (SYV, SYWV, SYFV) for closed-circuit monitoring and cable television projects
SYWV (Y), SYKV? cable television, broadband network dedicated Cables Structure: (Coaxial cable) Single oxygen-free round copper wire Physical? Foamed polyethylene (insulation)? (Tin wire? (Aluminum)? Polyvinyl chloride (polyethylene)
3, signal control cable (RVV sheathed wire, RVVP shielded wire) is suitable for building intercom, burglar alarm, fire, automatic meter reading and other projects
RVVP: Copper-core PVC insulated shielded polyvinyl chloride sheathed flexible cable? Voltage 300V/300V2-24 cores
Use: instruments, meters, intercom, monitoring, control installation
4, RG: physical foaming polyethylene insulation access network cable? Used for coaxial fiber-optic hybrid network (HFC) in the transmission of data analog signals
5, KVVP: PVC sheath braided shielded cable? Use: electrical appliances, instruments, power distribution equipment, signal transmission, control, measurement
6, RVV (227IEC52/53)? Polyvinyl chloride insulated flexible cable? Uses: household appliances, small power tools, instruments and dynamic? Power lighting
7, AVVR?PVC sheathed installation flexible cable
8, SBVV?HYA?Data communication cable (indoor and outdoor) for telephone communication and radio equipment connection and telephone wiring network distribution box wiring
9, RV, RVP?PVC insulated cables
10, RVS, RVB? Apply to household appliances, small electric tools, instruments, meters and power lighting connection cable
11, BV, BVR?PVC insulated cable? Uses: for electrical instrumentation equipment and power lighting fixed wiring
12, RIB speaker connection line (audiophile line)
13, KVV?PVC insulated control cable? Uses: electrical appliances, instruments, power distribution equipment signal transmission, control, measurement
14, SFTP? Twisted-pair cable? Transmission of telephone, data and information networks
15, UL2464?Computer connection cable
16, VGA monitor cable
17, SYV?Coaxial cable? Wireless communications, broadcasting, monitoring systems engineering and related electronic equipment in the transmission of radio frequency signals (including integrated coaxial cable)
18, SDFAVP, SDFAVVP, SYFPY?Coaxial cable, elevator special
19, JVPV, JVPVP, JVVP?Copper-core polyvinyl chloride insulation and sheathing of copper wire braided electronic computer control cable
16, VGA monitor cable
17, SYV? p>
Six: model naming
Wire and cable naming and modeling
Naming principles and cases:
The complete naming of wires and cables is usually more complex, so people sometimes use a simple name (usually a category name) combined with the model specification to replace the complete name, such as "Low-voltage cable" represents 0.6/1kV class of all plastic-insulated power cables. Wire and cable type spectrum is more complete, it can be said, as long as the standard type specification written wire and cable, you can clarify the specific product, but what is its complete naming?
Seven: wire and cable product naming has the following principles:
1, the content included in the product name
Basically named in the order described above, and sometimes in order to emphasize the importance of or additional features, the features will be written in front of the front or the corresponding structure before the description.
2, the order of structure description
Product structure description according to the principle of inside to outside: conductor-> insulation-> inner protection layer-> outer protection layer-> armor type.
3, simplified
In the case that will not cause confusion, some of the structural description of the provincial writing or abbreviation, such as automotive wire, flexible wire in the aluminum conductor is not allowed, so do not describe the conductor material.
Case:
Rated voltage 8.7/15kV flame-retardant copper-core cross-linked polyethylene insulated steel tape armored PVC sheathed power cables
"Rated voltage 8.7/15kV"-use occasions/ voltage rating
"Flame retardant" - emphasized feature
"Copper core" - the -conductor material
"Cross-linked polyethylene insulation" -insulation material
"Steel tape armor" -- armor layer material and type (double steel tape gap winding)
"PVC sheath" -- inner and outer sheath material (inner and outer sheath materials are the same, omit the inner sheath material)
"Cross-linked polyethylene insulation" -- insulation material Material)
"Power cables"
"Power cables"
Corresponding to the model is written as ZR-YJV22-8.7/15, the model is written in the back of the description.
The distinction between wire and cable
In fact, there is no strict boundary between "wire" and "cable". Usually a small number of cores, small diameter products, simple structure of the product is called wire, no insulation is called bare wire, the other is called cable; conductor cross-sectional area of a larger (greater than 6 square millimeters) is called a large wire, smaller (less than or equal to 6 square millimeters) is called a small wire, insulated wire is also known as cloth wire.
Wire and cable type composition and order is as follows:
[1:Category, purpose]
[2:Conductor]
[3:Insulation]
[4:Inner Sheath]
[5:Structural Characteristics]
[6:Outer Sheath or Derivative]
[7:Make Manganese Wine]
Items 1-5 and item 7 are expressed in pinyin letters, polymer materials are expressed in the first letter of the English name, each item can be 1-2 letters; item 6 is 1-3 numbers.
The principle of omission in the model: wire and cable products, copper is the main conductor material used, so the copper core code T write, but the bare wire and bare conductor products except. Bare wire and bare conductor products, power cables, electromagnetic wire products do not indicate the major categories of code, wire and cable for electrical equipment and communication cables are not listed, but listed in a small class or series code.
The seventh item is a variety of special occasions or additional special use of the mark of the requirements, in the "-" marked with a phonetic alphabet. Sometimes in order to highlight the item, the item is written to the forefront. Such as ZR-(flame retardant), NH-(fire-resistant), WDZ-(low-smoke non-halogen, enterprise standard), -TH (hot and humid areas), FY-(anti-termite, enterprise standard) and so on.
Power cable armor and outer jacket numbers
Number marking armor layer outer cover layer or outer jacket
0 no-
1 interlocking armored fiber outer cover
2 double-layer steel tape polyvinyl chloride jacket
3 fine round steel wire polyvinyl chloride jacket
4 coarse round steel wire -
5 crumpled (rolled) steel tape
6Double aluminum (or aluminum alloy) tape-
7Copper wire braid-
8Steel wire braid-
Wire and cable product classification
VIII: the main applications
1, the power system
Electric power systems used in the wire and cable products are mainly overhead bare Wire, busbar (bus), power cables (plastic cable, oil paper cable (basically replaced by plastic power cables), rubber cables, overhead insulated cables), branch cables (instead of part of the bus), electromagnetic wire and electrical equipment for power equipment wire and cable.
2, the information transmission system
Wires and cables used for the information transmission system are mainly telephone cables, television cables, electronic cables, radio frequency cables, fiber optic cables, data cables, electromagnetic wires, power communication or other composite cables.
3, mechanical equipment, instrumentation systems
This part of the bare wire in addition to overhead almost all other products are applied, but mainly power cables, electromagnetic lines, data cables, instrumentation cables and so on.
Nine: wire and cable products are mainly divided into five categories:
1, bare wire and bare conductor products
The main features of this category of products are: pure conductor metal, no insulation and sheath layer, such as steel-core aluminum stranded wire, copper-aluminum busbar, power locomotive lines, etc.; processing technology is mainly pressure processing, such as melting, calendering, Drawing, stranding/tightening stranding, etc.; products are mainly used in suburban, rural, user main line, switchgear and so on.
2, power cables
The main feature of this product category is: in the conductor outside the extruded (winding) wrapped insulation, such as overhead insulated cables, or a few cores stranded (corresponding to the phase line of the power system, the zero line and the ground), such as more than two-core overhead insulated cables, or to increase the sheath layer, such as plastic/rubber wire and cable. The main process technologies are pulling, stranding, insulation extrusion (winding), cable, armoring, sheath extrusion, etc., a variety of products have a certain difference in the combination of different processes.
Products are mainly used in the generation, distribution, transmission, transformation, power supply lines in the transmission of strong electrical energy, through the current (tens of amps to thousands of amps), high voltage (220V to 500kV and above).
3, electrical equipment wire and cable
The main features of this category of products are: a wide variety of specifications, a wide range of applications, the use of voltage in 1kV and below more, in the face of special occasions continue to derive new products, such as fire-resistant cables, flame-retardant cables, low-smoke halogen-free/low-smoke low-halogen cables, termite-resistant, anti-mouse 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
With the rapid development of the communications industry in the past two decades, the product also has an amazing rate of development. From the simple telephone and telegraph cables in the past to the development of thousands of pairs of words cable, coaxial cable, fiber-optic cables, data cables, and even a combination of communication cables.
The structure of this type of product size is usually small and uniform, manufacturing precision requirements.
5, electromagnetic wire (winding line)
Mainly used for a variety of motors, instruments and so on.
Wire and cable derivatives/new products:
Wire and cable derivatives/new products are mainly due to the application occasions, different application requirements and the convenience of the equipment and equipment to reduce the cost of the requirements, and the use of new materials, special materials, or change the structure of the product.
The use of different materials such as flame retardant cables, low-smoke halogen-free / low-smoke low-halogen cables, termite-proof, anti-rodent cable, oil / cold / temperature-resistant cables, etc.;
Changing the product structure, such as: fire-resistant cables, etc.
Improve the technological requirements of the cable, such as: medical cables, etc.;
Combination of products, such as: OPGW, etc.;
Facilitate the installation and reduce the equipment cost. Costs such as: prefabricated branch cables, etc.
Ten: the meaning of the specifications
Specifications using the number of cores, nominal cross-section and voltage rating
①Single-core branch cable specifications: the same circuit cable root * (1 * nominal cross-section), ?0.6/1KV, such as: 4 * (1 * 185) +1 * 95 ?0.6/1KV
②Multi-core stranded branch cable specification expression: the same circuit cable root * nominal cross-section, ?0.6/1KV, such as: 4 * * 185 + 1 * 95 ?0.6/1KV
Note: B (B) - the first letter indicates that the cabling, the second letter indicates that the glass wire preparation.
V (V) - the first letter indicates polyvinyl chloride (plastic) insulation, the second letter indicates polyvinyl chloride sheath.
L (L) - aluminum, without L means copper
F (F) - composite
R - flexible wire
S -- twisted
X -- insulated rubber
ZR -- flame retardant
NH -- fire-resistant
The above is the introduction of cable specifications and models, related content is more, we start from the cable specification abbreviation, then the cable specification method of expression, cable model of the eight-part composition and the cable model of the relevant issues, the model of the naming of wire and cable model naming principles, the main applications and wire and cable products are mainly divided into five categories and the meaning of the specification representation. I hope the above introduction of cable specifications and models will help you, so that everyone has a deeper understanding of the cable