What are the differences and characteristics of vv cable and yjv cable? What is a VV cable?
VV cable is a very common type of power cable. Its function is the same as that of YJV cable. Although the overall performance is not as good as YJV cable, and it is gradually replaced by YJV cable, it is still available in many fields because of its low price. A wide range of applications. Let's take a look at the simple parameters of the VV cable - [vv cable manufacturer]
VV cable [1]
VV cable full name copper (aluminum) core PVC insulated PVC sheathed power cable, an important member of the power cable, two letters V means that the insulation and sheathing materials are all polyvinyl chloride;
The components of the product structure from the inside to the outside are respectively a conductor, an insulating layer, a filling layer, a (steel strip layer), and a sheath layer. The most commonly used conductor material on the market today is of course the copper conductor; the insulating layer and the outer sheath material are all polyvinyl chloride, ie PVC plastic; the filling layer is generally some soft nylon material, in order to prevent the inner conductor between the cables The direct contact with the extrusion; the VV cable of the steel belt armor is the VV22 cable, and the steel belt armor is used for compressing and can be used for underground burying.
Implementation of the standard GB/T12706.1-2008;
The rated voltage is generally 0.6/1KV, or less than 35kv;
The working temperature has a long-term working temperature of not more than 70 ° C, the laying temperature is not lower than 0 ° C; when short-circuiting (the longest duration does not exceed 5 s), the maximum allowable temperature of the cable conductor is 160 ° C;
Allow the bending radius to be no less than 10 times the outer diameter of the cable;
It is generally used as a power transmission hub. It is often buried in the soil or laid in the interior, in the channel, in the tunnel, and the insulation distance between the lines is small. It does not need a tower, and it occupies less space, and basically does not occupy space on the ground.
Common specifications of VV cable models include 2 cores, 3 cores, 4 cores, 5 cores, 3+1, 3+2, 4+1;
The cross section consists of a cable consisting of 1.5mm2 - 240mm2, such as VV3*95+1*50 cable representing 3 strands of 95 square core plus 1 strand of 50 square core, other synonymous.
The difference between VV cable and YJV cable Although VV cable can replace YJV cable in many cases, it is difficult to distinguish each other in appearance, but the difference between VV cable and YJV cable is still relatively large.
First, let's first understand their full name.
YJV cable full name copper (aluminum) core XLPE insulated PVC sheathed power cable;
VV cable full name copper (aluminum) core PVC insulated PVC sheathed power cable;
The insulating material used for different YJV cables is cross-linked polyethylene, while the VV cable is made of polyvinyl chloride. Because the insulation of the YJV cable does not contain chlorine, it does not generate a lot of chlorine gas when burning (chlorine is a toxic gas). In comparison, XLPE insulation has higher temperature resistance, is more environmentally friendly, and has better performance than ordinary PVC.
The working temperature is different. The conventional YJV cable allows a maximum operating temperature of 90 °C. When short-circuited (within 5 seconds), the maximum temperature does not exceed 250 degrees Celsius; the conventional VV cable allows a maximum operating temperature of about 65 °C, and the short-circuit (within 5 seconds) the maximum temperature does not exceed 160 degrees Celsius. The difference in maximum operating temperature determines the higher current carrying capacity of the YJV, which also determines the overall performance of the YJV cable over the VV cable.
Operating voltage range is different Under normal circumstances, the YJV cable operates from 6 to 500KV, while the VV cable is from 1 to 6KV. Therefore, VV cables are generally used in low-voltage environments, while YJVs include high-medium-low voltage environments, which is why YJV cable manufacturing processes are demanding.
The price and life of the same specification model, YJV cable price is slightly more expensive than the VV price, which may be the reason why VV cable is still alive. However, YJV has a longer service life and is more resistant to high temperatures and insurance. It is more cost-effective to use YJV cables in terms of long-term and safety factors.
Finally, the residential project recommends the YJV cable to be safer and more environmentally friendly. If the budget is limited, you can choose to use VV cables in places where non-human habitats and voltage and temperature are not required. All in all, the general trend is that YJV cables are gradually replacing VV cables.
VV cable is a very common type of power cable. Its function is the same as that of YJV cable. Although the overall performance is not as good as YJV cable, and it is gradually replaced by YJV cable, it is still available in many fields because of its low price. A wide range of applications. Let's take a look at the simple parameters of the VV cable - [vv cable manufacturer]
VV cable [1]
VV cable full name copper (aluminum) core PVC insulated PVC sheathed power cable, an important member of the power cable, two letters V means that the insulation and sheathing materials are all polyvinyl chloride;
The components of the product structure from the inside to the outside are respectively a conductor, an insulating layer, a filling layer, a (steel strip layer), and a sheath layer. The most commonly used conductor material on the market today is of course the copper conductor; the insulating layer and the outer sheath material are all polyvinyl chloride, ie PVC plastic; the filling layer is generally some soft nylon material, in order to prevent the inner conductor between the cables The direct contact with the extrusion; the VV cable of the steel belt armor is the VV22 cable, and the steel belt armor is used for compressing and can be used for underground burying.
Implementation of the standard GB/T12706.1-2008;
The rated voltage is generally 0.6/1KV, or less than 35kv;
The working temperature has a long-term working temperature of not more than 70 ° C, the laying temperature is not lower than 0 ° C; when short-circuiting (the longest duration does not exceed 5 s), the maximum allowable temperature of the cable conductor is 160 ° C;
Allow the bending radius to be no less than 10 times the outer diameter of the cable;
It is generally used as a power transmission hub. It is often buried in the soil or laid in the interior, in the channel, in the tunnel, and the insulation distance between the lines is small. It does not need a tower, and it occupies less space, and basically does not occupy space on the ground.
Common specifications of VV cable models include 2 cores, 3 cores, 4 cores, 5 cores, 3+1, 3+2, 4+1;
The cross section consists of a cable consisting of 1.5mm2 - 240mm2, such as VV3*95+1*50 cable representing 3 strands of 95 square core plus 1 strand of 50 square core, other synonymous.
The difference between VV cable and YJV cable Although VV cable can replace YJV cable in many cases, it is difficult to distinguish each other in appearance, but the difference between VV cable and YJV cable is still relatively large.
First, let's first understand their full name.
YJV cable full name copper (aluminum) core XLPE insulated PVC sheathed power cable;
VV cable full name copper (aluminum) core PVC insulated PVC sheathed power cable;
The insulating material used for different YJV cables is cross-linked polyethylene, while the VV cable is made of polyvinyl chloride. Because the insulation of the YJV cable does not contain chlorine, it does not generate a lot of chlorine gas when burning (chlorine is a toxic gas). In comparison, XLPE insulation has higher temperature resistance, is more environmentally friendly, and has better performance than ordinary PVC.
The working temperature is different. The conventional YJV cable allows a maximum operating temperature of 90 °C. When short-circuited (within 5 seconds), the maximum temperature does not exceed 250 degrees Celsius; the conventional VV cable allows a maximum operating temperature of about 65 °C, and the short-circuit (within 5 seconds) the maximum temperature does not exceed 160 degrees Celsius. The difference in maximum operating temperature determines the higher current carrying capacity of the YJV, which also determines the overall performance of the YJV cable over the VV cable.
Operating voltage range is different Under normal circumstances, the YJV cable operates from 6 to 500KV, while the VV cable is from 1 to 6KV. Therefore, VV cables are generally used in low-voltage environments, while YJVs include high-medium-low voltage environments, which is why YJV cable manufacturing processes are demanding.
The price and life of the same specification model, YJV cable price is slightly more expensive than the VV price, which may be the reason why VV cable is still alive. However, YJV has a longer service life and is more resistant to high temperatures and insurance. It is more cost-effective to use YJV cables in terms of long-term and safety factors.
Finally, the residential project recommends the YJV cable to be safer and more environmentally friendly. If the budget is limited, you can choose to use VV cables in places where non-human habitats and voltage and temperature are not required. All in all, the general trend is that YJV cables are gradually replacing VV cables.
Product Description
•Material: 100% virgin PTFE, no recycle.
•Certificate: ISO9001,MSDS,RoHs,REACH,FDA,Certificate of Origin.
•Own best performance,can be filled other material such as Bronze,Fiber glass,Carbon,Graphite and so on.
•Size could be made on the basis of customer's requirement.
•Payment item: T/T,L/C,DP or others.
•Price item: FOB,CIF,CFR and so on.
•Delivery time: As your request,usually within 7 days.
Free samples can be offered as your requirements.
SPRCIFICATION:
Item Thickness Length& Width
Molded sheet 3~~100mm Length*Width
300*300mm------2000*2000mm
Skived sheet 0.2~~6.5mm Width 100---2700mm
Length: by roll
PTFE Sheet 1/64~1/4 48*48 , 60*60
MAIN PROPERTIES:
Item Unit Value
Gravity g/cm3 2.10-2.3
Tensile Strength MPa more than 15
Elongation Break % more than 150
Dielectric Strength Kv/mm 10
PTFE Sheet
100% Pure PTFE Sheet,Plastic PTFE Teflon Sheet,PTFE Teflon Baking Sheet ,100% Virgin White PTFE Sheet
ZHENJIANG CHUNHUAN SEALING MATERIALS CO.,LTD(GROUP) , https://www.chsealing.com