Can the expansion joint of the busbar be sleeved with heat shrinkable tubing?

The closed armoured cabinet is not condomined. Because the closed armored cabinet does not have the possibility of touching the busbar. If it's not closed, it's going to be set.

Heat shrink tubing is a special polyolefin heat shrink tubing, which can also be called EVA material. The outer layer is made of high-quality and soft cross-linked polyolefin material and the inner layer of hot melt adhesive, the outer layer of material has the characteristics of insulation, anti-corrosion, wear resistance, etc., and the inner layer has the advantages of low melting point and high adhesion of waterproof sealed box.

Performance: It has the functions of high temperature shrinkage, soft flame retardant, insulation and anti-corrosion. It is widely used in the insulation protection of various wiring harnesses, solder joints and inductors, and the anti-rust and anti-corrosion of metal pipes and rods. Voltage level 600V.

Polymer materials have to go through glass-high elasticity with low to high temperature, and the performance is close to plastic in glass state and rubber in high elastic state.

The material used in the heat shrink tubing is glass at room temperature and becomes highly elastic when heated.

Use: During production, the heat shrink tubing is heated to a highly elastic state, a load is applied to expand it, and it is quickly cooled while maintaining the expansion to make it enter the glass state, and this state is fixed. As soon as it is heated during use, it will become highly elastic, but at this time, the load is gone, and it will retract.

No, because you need to expand the amount, then it is easy for you to get stuck in the position of the heat shrinkable tube, so you can't.

So no.

I just helped you check the information related to you, and the information shows that this can be set, just set it directly.

Of course, this can't be set, so it's easy to break.

Yes, although it is said to be low voltage, the voltage of more than 36V is a dangerous voltage for the human body, and the range of low voltage refers to the voltage below 250V, so it is still necessary to put heat shrinkable tubes for insulation protection.

In this case, of course, you can put a heat shrinkable tube, because if it is a heat shrinkable tube, it can basically be normal, and it is also its physical property.

If the busbar. If insulation is required for expansion and contraction, it is not allowed to cover the heat shrinkable tube. This affects the busbar and the heat shrink tubing will also be damaged.

1. Inner diameter. We know that the cross-section of the casing is cylindrical and tube-like, and the inner diameter is the size of the inner diameter of the pipe wall, that is, the distance between the inner walls, which we usually use this letter to represent, because it is used to mark the diameter in engineering, and then followed by a number to indicate the value of the inner diameter, and the unit is mm millimeters if it is not written by default, such as 6.

2. Wall thickness. The second parameter wall thickness refers to the thickness of the pipe wall, and the inner diameter reflects the size of the pipe. Intuitively speaking, it is the thickness of a thing, so what does the thickness affect, we know that the role of the heat shrinkable tube is insulation protection, so the thickness affects the size of the insulation protection, we all know that the clothes are thick, then the role of cold protection and warmth is great, and the ability to keep out the cold is small when the clothes are thin, so the wall thickness of the heat shrinkable tube affects its protective ability, so on the whole, the thicker the heat shrinkable tube, the better its mechanical protection ability.

3. Shrinkage.

The shrinkage rate is sometimes called the heat shrinkage rate, the heat shrinkage ratio, etc., it refers to the diameter of the heat shrinkable tube at room temperature such as 6, and the diameter after heating and shrinkage is 3, then the shrinkage rate we are talking about is the ratio of the inner diameter of the heat shrinkable tube before shrinkage to the inner diameter after shrinkage, that is to say, 6 3 = 2 1, this 2:1 is the shrinkage rate of the casing, and the shrinkage rate reflects the size of the shrinkage capacity of the heat shrinkable tube, the higher the shrinkage rate, The thinner the heat shrink tubing becomes after it is fully shrunk. If the heat shrink tubing is 6 before shrinking and 2 after shrinking, only two millimeters in size, then its shrinkage rate is 6:

2, which is 3:1.

It is best not to make a heat shrinkable sleeve at the expansion joint of the busbar, which may affect the normal shrinkage.

The expansion connector is normally not able to cover the heat shrinkable tube, and the thermoplastic tube is the function of the sleeve fixing.

If the wooden brand is in contact with the heat shrinkable tube, it will not be able to set the heat shrinkable tube, will it make it produce multiple functions of a lively operation?

The five-row telescopic contact can be sleeved with heat shrinkable tubing because of thermal expansion and cold contraction.

In this position, you can also install this kind of heat shrink tube, but you must pay attention to fixing it when installing.

I think it depends on his physical properties, and it is definitely okay to put a set of heat shrinkable tubes, so in this case, it depends on some personal choices.

Hello, you can't do that. Follow the instructions. Or call the after-sales customer service, and they will deal with it as soon as possible.

Twilight said that if you touch the casing inside, you can't retract the tube.

Five rows: This stage is a routine, pipe tube, car tube, car tube, yes, yes, yes,

Can the five-row telescopic contact cover heat shrink tubing? The five-row telescopic contact can reveal the tube uh reveal that the pipe is tighter and stronger.

So there's nothing wrong with relying on that. c

Can the expansion joint be sleeved with heat shrinkable tubing? It should be okay, no problem.

Can the five rows of sound contact be able to penetrate the heat shrink tube? I don't know much about this, I haven't taken it to want to know, so you masters can solve it. Can you drain the clue technique to dig out a water pipe.

If we can contact the plastic pipe, this should be possible, look more and find professionals in this area to help you solve it.

Can the retractable contact of the busbar be sleeved with heat shrinkable tubing? I think this can certainly be used for heat shrink tubing.

Can the telescopic contact of the busbar be sleeved with folic acid? It can be a grass leaf shrinkage tube, and a pharyngeal tube can be sleeved.

volsun busbar heat shrinkable tubing:Production process: mixing - extrusion - irradiation vulcanization - expansion - packaging introduction:

It is made of radiation cross-linked polyolefin material, with excellent physical and chemical electrical properties, and its main function is the electrical insulation of connectors, the insulation protection of busbars in various situations, and the reduction of phase spacing, etc., which are widely used in various low-voltage switchgears, low-voltage bus ducts and insulation protection in low-voltage electrical appliances.

Voltage level: 1kv; 10kv；20kv(24kv)*；35kV is classified according to the production process: continuous busbar, segmented busbar.

According to the shrinkage ratio: the normal 10kV busbar is: 1; The busbar for 1kV and 35kV is 2:1.

Conversion of folded diameter FD to inner diameter D and wall thickness wt: pipe inner diameter d 2 (FD-2WT).

The relationship between the wall thickness before WT and the wall thickness after WT after shrinkage: WT 2WT after WT.

Detection method and significance: longitudinal shrinkage rate "10%. (Walshing standard "8%) wall thickness unevenness: "30% calculation method w% = (w thickness - w thin) w thickness implementation standard: GB T1059-2007

Selection principles: 1Product Voltage Level The voltage value of the object to be protected. 2.The inner diameter of the product The outer diameter of the object to be protected.

1.Voltage level. 2.The size of the copper bar.

About voltage level: The voltage level of the Walshing busbar heat shrinkable tube must be greater than or equal to the actual voltage used.

Precautions for the selection of busbar heat shrinkable tubing 1:

There are three voltage levels of busbar heat shrinkable tubes to determine the voltage level, 1kv, 10kv, and 35kv. The thickness of different voltage levels is not the same, and the thickness is not the same, so we must choose the corresponding voltage level when choosing the busbar heat shrinkable tube.

Precautions for the selection of busbar heat shrinkable tubing 2:

Determine the size of the busbar that needs to be protected. The size of the busbar is absolute according to the current used, generally the size of the busbar we choose is the conventional size: 15*3, 20*3, 25*3, 30*4, 40*4, 40*5, 50*5, 50*6, 60*6, 60*8, 60*10, 80*6, 80*8, 80*10, 100*6, 100*8, 100*10, 120*8, 120*10, 2(60*6), 2(60*8), 2(60 10), 2(80 6),2(80 8),2(80 10),2(100 6),2(100 8)2(100 10),2(120 8),2(120 10)...

Therefore, when selecting the type, we can select the corresponding busbar heat shrinkable tube model according to the actual busbar size. (For example, if we are using a 20*3 busbar, we can choose a 20 busbar.) But if there is a special type of busbar, we can not find the standard busbar heat shrinkable tube corresponding, we can according to the formula D=L+W (D is the internal strength of the busbar heat shrinkable tube, L is the width of the busbar, W is the thickness of the busbar).

Of course, there are many times when there is no such suitable model for you to choose, so when choosing, we have to pay attention:

If you choose a busbar heat shrink tube that is too small, the thickness of the heat shrinkable tube after use may be too thin, which cannot achieve the effect of safe insulation, and it may also be a rupture of the busbar heat shrinkable tube.

If you choose a model that is too large for the busbar heat shrink tubing, the heat shrink tubing may not shrink tightly after use, or the appearance of the shrink may be wrinkled.

The shrinkage mode is different, and the withstand voltage of the busbar tube is relatively high. You can ask the manufacturer for specific performance parameters.

Heat shrinkable sleeve (MRSG) is a new type of environmentally friendly halogen-free flame retardant sleeve that provides insulating protection for wires, cables and wire terminals at a high quality and low price. It has the characteristics of low temperature shrinkage, soft flame retardant, insulation and anti-corrosion. It is widely used in the insulation protection of various wire harnesses, solder joints, inductors and the anti-rust and anti-corrosion of metal pipes and rods.

Heat shrinkable sleeves are widely used in electronics, communications, automobiles and other fields to provide insulation protection for wire connections, and can also protect the surface of metal products from rust.

1. Remove the burrs and sharp corners on the busbar to prevent cracking caused by piercing the heat shrinkable tube during the retraction process of the busbar heat shrinkable tube.

2. Before using the heat shrinkable tube of the busbar, it is necessary to use a quick-drying cleaning agent in advance to clean the oil stain of the connecting part of the busbar before the heat shrinkable tube can be put on the busbar for heat shrinkage.

3. When casing, the incision should be neat and smooth, and no burrs or cracks should be generated, so as to avoid the stress concentration generated by heating and shrinkage and spreading along the cracks.

4. The busbar heat shrinkable tube can be used in any of the following methods, such as: constant temperature oven, propane lamp, liquefied gas open flame, gasoline blowtorch and industrial electric heat gun.

5. When the hair dryer or liquefied gas spray gun is sprayed, it must be evenly heated from one end to the other end or from the middle to both ends until the busbar heat shrinkable tube shrinks, and it cannot be heated from both ends to the middle, resulting in air bulging.

The polyethylene material of heat shrinkable sleeve belongs to the category of polyolefin, which mainly refers to polyethylene and polypropylene;

<>Among them, the output of polyethylene resin ranks first in the world;

Polypropylene is the lowest-density variety of commonly used resin, with good comprehensive performance and many modified varieties, and is one of the relatively fast-developing varieties in resin.

Pure PE milky white wax, odorless, non-toxic, odorless, flammable, waxy smell when burned, and accompanied by molten dripping phenomenon.

Heat shrinkable sleeve material polyethylene PE classification:

<> low-density polyethylene (LDPE): high-pressure synthesis.

High-density polyethylene (HDPE): low-pressure synthesis.

The main material of heat shrinkable tubing is the main production process of PE: at present, there are many companies with polyethylene technology in the world, 7 companies with LDPE technology, 10 companies with LLDPE and full density technology, and 12 companies with HDPE technology. From the perspective of technological development, LDPE produced by high-pressure method is the most mature method in PE resin production, and the process technology of kettle method and tubular method has been mature, and these two production process technologies coexist at the same time.

Foreign companies generally use low-temperature and high-activity catalysts to initiate polymerization systems, which can reduce the reaction temperature and pressure.

The high-pressure production of LDPE will develop in the direction of large-scale and tubular production. The low-pressure method for the production of HDPE and LLDPE mainly uses titanium and complexation catalysts, and most of Europe and Japan use titanium catalysts, while the United States mostly uses complexion catalysts.

At present, there are 11 kinds of polyethylene production technologies for heat shrinkable sleeves in the world, and 8 kinds of PE production processes in China.

1) High-pressure tubular and kettle reaction process.

2) Mitsui Chemicals' low-pressure sludge method CX process.

3) BP gas phase innovene production process.

4) Chevron-Phillips double-loop reactor LPE process.

5) Borealis North Star (BASTAR) bimodal process.

6) Low-pressure gas phase unipol process.

7) Basel Polyolefins Hostalen process.

8) Sclartech solution production process.

The material of Wörxing busbar heat shrinkable tube is mainly EVA ethylene copolymer + masterbatch + others.

The heat shrinkable busbar is made of special polydilute hydrocarbon materials and has extremely high insulation properties. Heat shrinkable busbar is divided into 1kV heat shrinkable busbar, 10kV heat shrinkable busbar, 35kV heat shrinkable busbar, heat shrinkable busbar is used for substation bus, high and low voltage switchgear busbar insulation protection, heat shrinkable busbar can make the structure of the switchgear compact (shortened phase distance), to prevent occasional short circuit accidents.

Characteristics Shrinking ratio: 2:1 3:1

Shrink speed: Fast.

Common colors: red, yellow, green.

<> 1kV continuous busbar bushing.

Heat-shrinkable busbar sleeves.