Water Tree Retardant XLPE Compound for 35KV and Below Power Cable

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Main Properties & Typical Values

Test Items


Test Method


Typical value

Tensile strength





Elongation at break





Heat ageing properties (Test temperature 135℃, 168hr)

Maximum tensile strength change      

Maximum elongation at break change








Heat elongation (200±3)℃x15minx0.2MPa)

Maximum elongation change under load      

Maximum permanent elongation change after cooled








Impact brittle temp. (-76℃)  

Impact brittle

Failure no.




Dielectric Strength





Dielectric loss factor 50Hz, 20℃


GB/T 1409



Dielectric constant 50Hz, 20℃





Volume resistance (20℃)


GB/T 1410



Gel content





*Relative size of water tree growth


Q/GHPX 114



Note: *Technical property meaning:The percentage of water tree growth size of the water tree retardant XLPE compound

All typical values were tested by press moulding sample under the condition of 180±2 ℃,15min, and pressure over 15Mpa, then cooling to room temperature

Referring to the JB/T10437-2004 standard, the company standard specified that in every 1kg sample of grade 4205TR-35, the impurities with diameter 0.175 ~ 0.250mm must not be more than 5 pieces, the impurities with diameter more than 0.250mm must be zero.

We have strict control over theraw material of product grade 4205TR-35, which has been produced under purified environment. The typical value of product impurity content is:

Particle diameter (mm)                          No. of particle

0.175-0.25                                                 1

>0.25                                                        0

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Q:Now the market professional installation monitoring the construction team how much money a point? , As well as cable patch panels and telephone patch panels how much money a point? Is it distance?
I think it is possible, because in our (old) substation, the cable trench is the drain, the cable erected in the cable bracket.
Q:Why this cable has not yet been certified
Electromechanical products are usually used to be assembled into parts, multiple parts and then assembled into a single product, the number of products or the number of pieces measured
Q:What kind of KVM switch is this configuration below?
Wire and cable warranty period is 30 years of national warranty period. But the specific warranty period according to the type of wire and cable and the use of conditions and temperature and applicable methods to determine. General cable maintenance period is about 15 years, but to ensure that the normal use of the environment, such as the amount of temperature is below 70 degrees, but you are more than 70 working environment to use, of course, may not be used for a year. Therefore, the most important thing is to follow the instructions to use.
Q:Help look at such a configuration will not have compatibility issues! Do you need to improve? Budget in 5500 or so
What do you want to do? Do network cabling buried? Or in the building after the tube?
Q:What is the difference between wires and cables?
The introduction of the device in the form of: sealing ring (sealing ring is to achieve the required protection level of the shell and the use of cash-saving brush to help find the silent material or elastic material parts) type of introduction device; casting solidified packing seal Type introduction device; metal seal ring introduction device
Q:How to distinguish between power cables and electrical wiring on drawings
The second floor of the formula is correct, my space also have this formula, with armor and no armor in the current no difference, there are differences in the installation, usually buried to armor, overhead or bridge without armor, you give the model is not Armor, YJV-4 * 240 without armor, YJV-22-4 * 240 armor,
Q:Seeking the basement of the outer wall piercing the cable after the casing, how to solve the water (200 points online)
Line width, and can not pass the gap between the chip pins, even after, but also because the distance between the wire and the lead is less than the electrical rules specified in the safe distance. In general, the ground can not pass through the gap between the chip pins, go outside or take the gap between the two columns through the gap. The width of the ground wire can also be set appropriately, and the wire is widened by adding a polygon brass cut. The safety distance in the electrical rules defaults to 10 mils, which is relatively small, and the safety distance of the different networks should be set separately as needed.
Q:What is the cable for rvv? Is it a power cable or a control cable? What is the cable?
The installation process is a certain requirement, high and low voltage cable bridge should be installed separately as usual, a wall laying vertical pipeline (slot) or installation equipment, the power distribution between the depth of D1 = 1200 ~ 1500mm; weak Between the deep distance from the D2 = 1100 ~ 1400mm more reasonable. The length L1 and L2 between the power distribution and the weak can be determined according to how much electrical equipment and pipelines (slots) are installed in the room. "Civil building electrical design specifications" proposed "shaft size in addition to meet the wiring spacing and terminal box, distribution box layout must be the size, but also in the box before the left not less than 0.8m operation, maintenance distance" requirements. In the weak equipment, the operation and maintenance distance is not specified in the provisions of the Code for Electrical Design of Civil Buildings, but it should not be less than 0.8m. Cable to wear steel pipe wiring, should be reserved in the floor steel pipe, wiring should be completed after the plug fire fire blocking material. Cable bridge installation should be horizontal, the maximum sag should not be greater than 10 mm; proposed separate installation
Q:Cable YJV-3 * 70 + 2 * 35 general wear large SC tube? Ask you.
I use the TV as a computer screen, connect the HD line, how no sound
Q:Wire pipe inlet air switch trip how to do?
The middle of the line is not a problem where there is a problem in the place where the joints check the place of the joints can not do the lines are out to check the time and effort

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