The meaning of cable model

Question 1: What do you mean by cable model? Check online: 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

R- flexible cable (wire) for connection, flexible structure. V-type insulated polyvinyl chloride. V-PVC insulation V-PVC sheath B-flat (flat). S-shaped twist. Tin or silver plating. F- high temperature resistant P- braided shield P2- copper tape shield P22-steel tape armor Y- prefabricated, generally omitted, or polyolefin sheath FD- product category code, which refers to branch cable. The standards to be promulgated by the Ministry of Construction are expressed by FZ, and their essence is the same.

YJ XLPE insulation

PVC insulation or sheath

Zirconium flame retardant

NH- refractory type

WDZ-Halogen-free Low Smoke Flame Retardant

WDN―― Halogen-free low-smoke fire-resistant type

Low-voltage power cables, common basic models:

PVC insulated PVC sheathed (copper core) power cable;

YJV-XLPE insulated PVC sheathed (copper core) power cable.

If it is an (aluminum core) conductor, add L in the middle, that is, VLV and YJLV are respectively;

Flame-retardant cable, with ZR in front, namely ZR-VV and ZR-YJV；; ;

Fire-resistant cable, with N (or NH) in front, namely NH-VV and NH-YJV；; ;

Halogen-free and low smoke, WD-YJY type, XLPE insulated polyolefin sheath;

RVVP is a copper-core PVC insulated shielded PVC sheathed flexible cable with a voltage of 300 V/300 V, which is used for instruments, meters, intercom and monitoring devices. The wire used inside is a soft wire composed of several thin copper wires, which is RV wire. Here are 2 cores, wire diameter1.0mm2. 。

YJV-XLPE-insulated, PVC-insulated or sheathed cable, with three-phase (three-core) main power supply line over 70mm2, and grounding wire over 40mm2.

It can be seen that it is a control line and a power line.

Question 2: The cable model is interpreted as 10. Yes, it's a copper core cable.

Yjlw02-z127/20065438+0x200mm2 model, the meanings of letters and numbers are:

YJ crosslinked polyethylene insulating material; Lw- corrugated aluminum casing; 02-PVC outer sheath; Z- longitudinal water blocking;

127/200- rated voltage of cable UO/U = 127/200 kV; 1x 2000 mm2- Single-core cable with nominal section of 2000mm2.

The full name of the cable is: copper core XLPE insulated corrugated aluminum sleeve or welded corrugated aluminum sleeve PVC sheathed longitudinal water-blocking power cable.

Question 3: The cross-sectional area of the conductor type is generally the number after the last edge "-"

For example, BV-2.5 2.5 is the cross-sectional area.

In the multi-core case, it can be understood as follows:

Such as YJV22-3*25+ 1* 16.

"-"is followed by 3*25+ 1* 16.

3 is 3, 25 is the area, 1 yes 1, 16 is the area.

That is to say, three 25-square ones and 16-square 1.

If necessary, our factory has production.

Question 4: What is the meaning of+1 in cable model YHC3× 16+ 1×6?

3× 16 means there are three 16mm2.

+1×6 means 1 block 6mm2.

Question 5: What do all kinds of cables mean? Model meaning [1]-[2] [3] [4] [5] [6] [7] [8]-[9] [1] Zr-flame retardant, NH- fire resistant, ZA(IA)- intrinsically safe [2] use. By default, power cables refer to K- control cables, P- signal cables and DJ- computer cables [3] insulation layers. V- PVC, Y- PE, YJ- XLPE, X- rubber and Z- paper [4] conductors. By default, T- copper core refers to the inner sheath (sheath) of L- aluminum core [5], V- PVC, Y- polyethylene, Q- lead sheath, L- aluminum sheath, H- rubber, HF- flame-retardant rubber, LW- corrugated aluminum sheath, F- chloroprene rubber and N- Ding Qing rubber sheath [6]. Needless to say, turn-key type, F-phase lead-clad split-phase sheath, D non-dripping, CY oil-filled, P-shielded, C dust-filtered, Z DC[7] armored layer. 0- None, 2- Covered with double steel strip (24- steel strip and thick round steel wire), 3- thin round steel wire, 4- thick round steel wire (44- double thick round steel wire) [8]. 0- none, 1- fiber layer, 2- PVC sheath, 3- PE sheath [9] rated voltage. Expressed in numbers, kV

Question 6: Take the meaning of cable specification as the first model. The first letter BVR is his material, and the size is 35. A small cable is added at the back, which means that this cable is composed of a small cable of 35 and a small cable of 16.

Didn't you write down all your models? For example, our commonly used model is YJV22-0.6/ 1-4*240.

And BV-25. In these two models, BV(YJV) is the material, 22 is the steel strip (that is, the outer cladding metal), and 0.6/ 1 is the insulation level, that is, 0.6- 1KV (if 10KV is used, it is 8.7/. BV line can only be used at low voltage (0.38KV), so it is relatively simple to write down the material and radius, without specifying what voltage to use, so there is no insulation grade, and the number of cables inside is fixed.

Question 7: What does the cable model YZ mean? The cable model YZ stands for medium-sized rubber-sheathed flexible cable.

Rubber sheathed cable is a flexible movable cable with multi-strand thin copper wire as conductor, rubber insulation and rubber sheath. Generally speaking, it includes general rubber flexible cable, welding machine cable, submersible motor cable, radio equipment cable and photographic light source cable. Rubber sheathed cables are widely used in various electrical equipment, such as household appliances, motors, electrical devices and portable power cords of electrical appliances. At the same time, it can be used indoors or outdoors. According to the mechanical external force on the cable, the product structure is divided into three categories: light, medium and heavy. There are also appropriate connections in the section.

Question 8: What does power cable mean and what model does it represent? The types and varieties of power cables mainly include the following aspects:

Model and product description of 35kV and below power cables

1. Use the capital letters of Chinese Pinyin to indicate the insulation type, conductor material, inner sheath material and structural characteristics. If z stands for paper (zhi)

; L stands for aluminum (LV); Q stands for lead (money); F stands for phase separation (fen); ZR stands for flame retardant (zuran); NH stands for fire resistance (fire resistance

)。

2. The composition of the sheath is expressed in figures with two digits. No number means no armor and no outer cover. The first number represents armor, and the second number represents armor.

Numbers represent outer skins, such as thick steel wire armored fibers, and are expressed as 4 1.

3. Cable models are generally arranged in the order of cable structure: insulation materials; Conductor material; Inner protective layer; External sheath.

4. Cable products are represented by model, rated voltage and specifications. The method is to specify rated voltage, number of cores and nominal cross-sectional area after the model.

* * * Numbers. For example, VV42- 10 3× 50 represents copper core, PVC insulation, thick steel wire armor, PVC sheath, rated voltage 10kV,

3-core power cable with nominal cross-sectional area of 50mm2.

Code names of various parts of power cable models and their meanings

1. Insulation type: V stands for PVCx and rubber; Y represents polyethylene; YJ represents crosslinked polyethylene; Z stands for paper.

2. Conductor material: L stands for aluminum; T (omitted) stands for copper.

3. Inner sheath: V stands for PVC sheath; Y polyethylene sheath; L aluminum sheath; Q lead sheath; H rubber sheath; Neoprene rubber sheath.

4. Features: D does not drip; F phase separation; CY oiling; P lean oil dry insulation; P shielding; Z DC。

5. Control layer: 0 None; 2 double steel belts; 3 thin steel wire; 4 thick steel wire.

6. External coating: 0 None; 1 optical fiber cover; PVC sheath; 3 polyethylene sheath.

7. Add Zr to the flame retardant cable before coding; Add NH before the fire-resistant cable specification.

Model and product representation of oil-filled cable

The model of oil-filled cable consists of product series code and the code of each part of cable structure. Self-contained oil-filled cable product series code CY. External sheath structure

From inside to outside, it is represented by the code combination of reinforcement layer, armor layer and outer cover layer respectively. Insulation type, conductor material, inner sheath code and code arrangement.

The sequence and product representation method are the same as those of 35kV and below power cables. For example, CYZQ 10220/ 1x4 stands for copper core, paper insulation and lead sheath.

Self-contained oil-filled cable with copper tape radial reinforcement, no armor, PVC sheath, rated voltage of 220kV, single core and nominal cross-sectional area of 400mm2.

The code of the outer sheath of oil-filled cable refers to

1. Strengthening layer: 1 stands for radial strengthening of copper strip; 2 stands for radial reinforcement of stainless steel strip; 3. Radial reinforcement of steel strip; 4 stainless steel strip radial and narrow stainless steel strip

Longitudinal reinforcement.

2. Armor layer: 0 without armor; 2 steel belt armoring; 4 thick steel wire armor.

3. External coating: 1 fiber layer; PVC sheath; 3 polyethylene sheath.

I hope to adopt it. Your adoption is my motivation to answer questions.

Question 9: What does cable specification 3* 16+2* 10 mean? Please explain in detail! Hello:

This is a five-core cable: three 16 square A, B and C three-phase main cables, plus two 10 square auxiliary cables (N and PE wires).