BV2.5 household decorate copper aluminum core national standard testing 450/750 v

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Product Description:


BV wire or plastic wire, name, general purpose single core hard conductor sheathed power cable.



B is represented categories, wire cloth, T on behalf of the conductor is: the copper conductor, V represents the insulation is: PVC.



1. Plastic wire type



BV is divided into: ZR - BV and NH - BV.



ZR - BV: copper core PVC insulated flame-retardant wire: insulation material with flame retardant, leaving no spontaneous combustion flame.



ZR - BV: flame retardant BV line is divided into A, B, C, D four grades, including class A is best, and so on, the most commonly used for ZB - BV.



NH - BV: copper core PVC insulated refractory wire: fire normally can be normal use.



2. The scientific name



Copper core PVC insulated wire



3. BV line USES



General purpose single core hard without sheathed cable conductor, is fit for ac voltage up to and including 450/750 power equipment, electrical appliances, instruments and equipment with cable wires.



4. BV line features



With acid and alkali resistance, oil resistance, moistureproof, mouldproof.



5. The wire type and name



1. The classification and USES is used for distribution of current use, as part of the wiring, expressed in the letter "B";



2. The conductor material is copper, with the letter "T", said the wiring of the copper conductor omitted;



3. The insulation material for PVC, with the letter "V";



4. Wiring structure is simple, in addition to the above three points, some still sheathed, sheath material is polyvinyl chloride (PVC) is also expressed in the letter "V"; Sheath materials for rubber is represented by the letter "X". No behind the sheath, and you don't have to say.



Such as the BVV said copper core PVC insulated PVC sheathed round wire.



6. Commonly used BV line model



BV line usually use insulation center metal conductor cross-sectional area to differentiate between the specifications. (such as the four square copper BV line cross section is 2.24 mm in diameter, according to the circular area calculation formula S = PI * r * r = 3.939 mm2)



Commonly used bv line type: 0.75 square, 1 square, 1.5 square, 2.5 square, four square, square, 10 square, square, 25 square, 35 square, 50 square, 70 square meters, 95 square meters, 120 square meters, 150 square meters, 185 square meters, 150 square etc. [1]


7. Other related content



BV cord with BVR said that BV rubber and copper wire with BX, said BV rubber aluminum expressed with BLX, BV plastic aluminum expressed in BLV, refractory BV line in NH - BV, flame retardant BV line with ZR - BV said



Purpose: ordinary insulated wire, household electrical wiring, it is the most commonly used type of wire.



With 100 square meters of new homes for the class, four square copper BV wires 200 meters, 2.5 400 m, 1.5 300 meters, 100 meters 1.5 square copper core of BV double color wire. The above said is not decorate condole top, if want to condole top 1.5 line even more



BV wire diameter side there are also several 0.2 0.3 0.4 0.5 number 300 400



8. Commonly used BV line color



Commonly used BV line colors: red, yellow, blue, green, black, white, double color (yellow, green, brown.



9. Bv plastic wire product standards



GB/T5023-2008 is equivalent to this standard IEC 60227-1997, JB/T 8734-2012 is equivalent to this standard IEC 227-1979


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Q:Does the control cable KVV require 3C certification?
As long as the industrial production license only RVV and BV class needs 3C
Q:What is a structured cabling system? Which subsystems can it be divided into?
A: General communication cables and signal cables are black or blue, red
Q:Elevator control cable selection is based on what
"GB / T5013.5-2008 rated voltage 450 / 750V and below rubber insulated cable" Part 5: elevator cable This part gives the rated voltage of 300 / 500V rubber insulated elevator cable technical requirements of the factory in accordance with this standard for the production formula Is the general you see the elevator with the cable what the standard "GB-93 electrical installation installation elevator electrical installation and acceptance of the specification" site in accordance with this construction acceptance although the 93 standard but not yet abolished to understand?
Q:Fire emergency lights and safety exit signs of the wall wiring with a trunking or iron pipe.
The nominal voltage of the cable should be expressed in U0 / U, U is the voltage between the conductor and the conductor in the design of the cable, and U0 is the voltage between the conductor and the metal shield (simply the conductor to ground) when the cable is designed. In China, the general use of U to indicate the voltage level of the cable, which is the new China's early founding of the former use of the former Soviet Union standard to stay in the habit of the 10kV cable actually refers to the 6 / 10kV or 8.7 / 10kV cable, 10kV cable is the first type of system 10kV cable, 8.7 / 10kV cable is the second type of system 10kV cable, 6 / 6kV cable is the second type of system 6kV cable, 8.7 / 15kV cable is the first type system 15kV cable. Not because the 6 / 6kV cable and 6 / 10kV cable the same structure that they are 10kV cable. 8.7 / 10kV cable and 6 / 10kV cable insulation thickness is indeed different, but they are indeed 10kV voltage level of the cable, and are used in the 10kV voltage level of transmission or substation lines, but the line center point grounding different. 8.7 / 10kV cable 10kV line for non-effective grounding at center point, 6 / 10kV cable 10kV line for effective grounding (or direct grounding) at center point. Most of our 10kV cable lines belong to the center point of non-effective grounding system, so the use of 8.7 / 10kV cable more, the center of the effective grounding system lines are also, such as in the railway, petrochemical system has a central point of effective grounding 10kV line. Most of the 10kV cable lines in the Western countries belong to the center point of the effective grounding (or direct grounding) system, 6 / 10kV (or 6.35 / 11kV) cable with more.
Q:How the square of the cable and the current conversion
Also say that the general 110-type 100 pairs of patch panels are above the 4-row cable card strip position, each row is 25 pairs, for 4 pairs of cable, this row can only access 6 cable , Just 24 pairs and wealthy pair of positions, so the number of 100 pairs of patch panels is the output of your voice information points divided by 24 chant
Q:Boot fan after the normal rotation, the screen no display, forced shutdown and then boot everything is normal
Can not take a trunking. Strong and weak should be separated as far as possible. Impact: 1: If the telephone line online, will interfere with the telephone line, will lead to slow speed and frequent broken network. 2: If it is fiber broadband, cable inside a reinforced steel core, rely on too close will produce induction current, a serious time will lead to electric shock. For example, the following news Fengmou husband and wife live Ninghe District, 9 o'clock in the morning, Fengmou home computer when the sudden shock, his wife came to rescue when the electric shock, the two died on the spot. The investigation, the cause of the accident is 10 kV high voltage electrical lines connected with the Unicom fiber optic cable, through the cable on the cable support line will be 10 kV high voltage into the Fengmou home, resulting in two couples were killed by electric shock.
Q:What is the bad effect of the elbow at the bend?
Copper core: 1.5 square can carry 24A current, 2.5 is 32A, 4.0 is 42A; aluminum core: 1.5 is 18A, 2.5 is 25A, 4.0 is 32A. Power (watts) = voltage * current, their own calculation. Port algorithm: 10 square below the current multiplied by five, copper line up, pipe high temperature 8/9 fold 2.5 square high level is 4 square, 4 times 5 equal to 20 amps if the tube is then multiplied by 0.8 ambient high temperature multiplied by 0.9 both through the tube and the high temperature multiplied by 0.722.5 square copper The manual carrying current in the manual is 27 amps. If it is 220v indoor voltage, is probably 6 kilowatts
Q:How to choose cable tray? What is the rough cable to use what size of the bridge? How much margin does the cable tray stay?
Why the dog is not obedient, called it also ignored, sometimes I walked into it back, let it go it does not go, always resist me
Q:What are the precautions when installing the shower room?
2No49-98 years in order to enable readers to understand the relevant requirements before the R & D and manufacturing, and its signature, structural requirements and safety testing of the three major Make the following description and description
Q:24-port network patch frame line who said something, there are patch panels when the line should pay attention to what?
The red and white on the set-top box and TV on the audio / video input group docking, other groups do not pick up. Unplug the cable network from the TV to dock it with the corresponding port of the set-top box. And then the foolishness of the seal of the locust Feng Wei Wei with TV switch to AV on it.

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