What is the cable model and size comparison?

Cable specification is the meaning of the representation of the number of cores and cross-sectional dimensions of wires and cables. The wire and cable products used in the power system mainly include overhead bare wires, busbars, etc.

The wires used in home decoration are generally single-strand copper core wires, and there are three main wire specifications according to the different cross-sectional areas, which are and. In addition, there are specifications, mainly used for the main line into the house, the amount used in home decoration is very small, and it is generally not included in the scope of home improvement circuit wire.

Commonly used models

BV wires are usually distinguished by the cross-sectional area of the metal conductor in the center of the insulation. (For example, the cross-sectional diameter of the copper core of 4 square BV wire is millimeters, and the formula for calculating the circular area is s= *r*r=square millimeters).

Commonly used BV line models: squared, 1 square, squared, squared, 4 square, 6 square, 10 square, 16 square, 25 square, 35 square, 50 square, 70 square, 95 square, 120 square, 150 square, 185 square, 240 square, etc.

The above content reference: Encyclopedia-BV line.

Cable model**.

1. Usage** Not marked as power cable, K is control cable, P is signal cable;

2. Insulation** Z oil-impregnated paper, X rubber, V polyvinyl chloride, YJ cross-linked polyethylene.

3. The conductor material is not marked as copper, and l is aluminum;

4. Inner sheath ** Q lead pack, L aluminum pack, h rubber sheath, V polyvinyl chloride sheath.

5. Derivation** d does not drip flow, p dry insulation;

6. Outer sheath**.

7. Special products** TH humid tropical, TA dry tropical;

8. Rated voltage unit: kv

Application classification of wires and cables.

1. Power system.

The wire and cable products used in the power system mainly include overhead bare wires, busbars (busbars), power cables (plastic cables, oil-paper power cables (basically replaced by plastic power cables), rubber cables, overhead insulated cables), branch cables (replacing part of the busbar), electromagnetic wires and electrical equipment wires and cables for power equipment.

2. Information transmission system.

There are mainly local telephone cables, TV cables, electronic cables, radio frequency cables, optical fiber cables, data cables, electromagnetic wires, power communications or other composite cables.

3. Mechanical equipment, instrumentation system.

In addition to overhead bare wires, almost all other products in this part have applications, but mainly power cables, magnet wires, data cables, instrumentation cables, etc.

Dear, hello, the size of the cable model in the í is meaning: this is the cable model, and the model according to the arrangement of the cable structure is generally in order: insulating material; conductor materials; inner sheath; Outer sheath.

Cable products are expressed by model number, rated voltage, and specifications. This is done by appending the model number with Arabic numerals indicating the rated voltage, number of cores and nominal cross-sectional area. For example, VV42 10 3 50 represents copper core, PVC insulation, crude steel wire armor, PVC sheath, rated voltage of 10kV, 3 cores, and a nominal cross-sectional area of 50mm2 power cables.

The model of the cable and the size of the cable are corresponding, as shown in the following table.

1. Comparison table of outer diameter and model specifications of VV cable and VLV cable.

2. VV22, VLV22 cable outer diameter and code ridge model specification comparison table.

3. YJV cable and YJV32 cable model and size comparison table.

4. BV, BLV wire gauge and size comparison table.

5. YJV22 cable specifications and outer diameter comparison table.

6. The outer diameter dimensions of BVVB, BLVVB, and RVVB wire models include a comparison table.

The model of the cable and the size of the cable imitation ruler are corresponding one by one, and the specific details are shown in the following table.

1. Comparison table of outer diameter and model specifications of VV cable and VLV cable.

2. VV22 and VLV22 electric standby high cable outer diameter and model specification comparison table.

3. YJV cable and YJV32 cable model and size comparison table.

4. BV and BLV wire specifications and size comparison table.

5. YJV22 cable specifications and outer diameter comparison table.

6. BVVB, BLVVB, RVVB wire model finch with outer diameter size comparison table.

<> Answer: From the ** parameter analysis you provide, the rated working current of this circuit breaker is 100A (at the yellow wire frame in the figure), find the practical hardware dissipation handicraft jokebook, the safe load current of each square copper core wire is 6A, take the envy of this wire should be less than or equal to 16mm copper core wire, the rated working current of the wire is 16 6 = 96A square and the rated working current of the circuit breaker is 100A.

Combined with the analysis of the size ratio of wires and accessories such as circuit breakers and terminals in the figure, if the wire is a hard wire (the insulation protection skin is thin and the copper wire core is hard), the model specification is a 16mm copper core wire; If the wire is a soft wire (the insulation protective skin is thicker and the copper core is softer), the model specification may also be a 10mm copper core wire, and the rated working current of this specification is 10 6 = 60A and the rated working current of the circuit breaker is 100A, which is more in line with the circuit breaker relative to the cable should have a certain reserve margin circuit wiring assembly requirements.

Judging from the **, it is the unmasked circle method to determine the specific specifications and models, but from the experience of the three-phase five-wire system, the specifications of YJV-3*50+2*25 can be filed and answered by Huixing for reference

The cable specification and model represent the characteristics of the cable, the number of cores and the cross-sectional area, which is an important reference data for cable selection, and each cable alphanumeric has a special meaning; Next, Shenghua Electric will introduce the specifications and models of the cable, how to see the square? Cable specifications and models are listed.

1. How to look at the square of cable specifications and models?

1. According to national standards and specifications: the surface of the cable should have the name of the manufacturer, product model, specification square and rated voltage and other marking parameters. When there is a problem in the use of the cable, the manufacturer can be found in time, and consumers must pay attention to this when purchasing cables.

At the same time, consumers should pay attention to whether the manufacturer's name, product model, rated voltage and printed mark on the surface of the wire are consistent with the printed mark on the surface of the wire when purchasing cables, so as to prevent counterfeit products.

2. Cable specification and model format: YJV-3*185+2*95, model + multiplied by several This format indicates the number of cable cores in the first few fingers, and the second refers to the cross-sectional area of a single core; It represents a YJV cable consisting of 3 cores with a cross-section of 185 square meters and a 2-core cross-section of 95 square millimeters.

3. The formula for calculating the square of the cable specification and model: measure the diameter of the metal wire with vernier caliper (represented by d). Calculate the cross-section of the copper conductor of the cable wire by the formula:

s=, i.e. the area formula of the circle. If the core is glued together, the cross-sectional area of a single strand can be calculated and multiplied by the total number of strands.

4. For example, how to look at the square of cable specifications and models: WD - halogen-free and low smoke, ZA - flame retardant class A, YJ - cross-linked polyethylene insulation, V - PVC sheath or flame retardant sheath with PVC as the base material, the rated withstand voltage of the cable UO U=, 4 95 + 1 50 - a cable with five conductor insulated cores (that is, 5-core cables), of which, 4 95 square millimeter conductor insulated cores, plus a 50 square millimeter conductor insulated core.

Second, the cable specifications and models of the table.

Commonly used cable specification table.

1. VV, VLV, VV22, VLV22 cable specifications and models.

2. YJV, YJV22, YJV32, YJV42, YJV43, YJLV, YJLV22, YJLV32 and other cable specifications and models.

<>3, BV, BLV, BVR, BVVB, BVV cable specification table.

<>4, RV, RVB, RVS, RVV, RVVB cable specification table.

5. RVP, RVVP cable specification table.

6. NH-VV, NH-VV22 cable specification table.

The list of cable specifications and models is as follows:1. Specifications and models of VV, VLV, VV22 and VLV22 cables.

2. YJV, YJV22, YJV32, YJV42, YJV43, YJLV, YJLV22, YJLV32 and other cable specifications and models.

3. BV, BLV, BVR, BVVB, BVV cable specifications and models. Envy is good.

4. RV, RVB, RVS, RVV, RVVB cable specifications and models.

5. Specifications and models of RVP and RVVP cables.

6. NH-VV, NH-VV22 cable specifications and models.