buffering semi-conductive water blocking tape

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buffering semi-conductive water blocking tape
1.strong moisture absorption
2.big expansion rate
3.quick expansion velocity

Buffering semi-conductive water blocking tape is used for water-proof layer inside the metal sheath of high or extra high voltage cable.

Specification and technical parameter is as follows:

unit weight(g/m2)200±40240±40280±40320±40
tensile strength(N/cm)≥40≥40≥40≥40
expansion velocity (mm/1st min)≥8≥8≥8≥8
expansion height(mm/3min)≥12≥12≥12≥12
surface resistance(Ω)<1500<1500<1500<1500
volume resistance(Ω.cm)<1×106<1×106<1×106<1×106
instant stability(°C)230230230230
long-term stability(°C)90909090
water percentage(%)<9<9<9<9


1,it has characteristic of strong moisture absorption,big expansion rate and quick expansion velocity.

2,small resistance can make cable has semi-conductivity and weaken the electrical field strength effectively.

3,high mechanical strength makes it easy to be wrapped and longitudinal wrapped for kinds of cables.

4,it is heat-resistant and can bear high instant temperature.cable with this product can keep stable performance at instant high temperature.


it should be stored in dry house,kept away from source of fire and not to be exposed to the sunshine.the shelf life is 6 months after the manufacturing date.also it should avoid moisture and mechanical damage during storage and transportation.

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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?
Directly to find Dell customer service bar, the general warranty period are free replacement, unless the insurance of the. You can extend the warranty period, it seems you like to do the experiment.
Q:Galvanized wire tube buried to do anti - corrosion do
No need. Galvanized flat iron to do when the grounding grid is not anti-corrosion, but if there is welding or damaged place to become anti-corrosion.
Q:Where should the inner diameter of the plastic tube of the cable be at least the number of times the outer diameter of the cable?
Wiring room refers to the distribution of the weak floor of the room, the weak point refers to the building weak vertical pipe
Q:2.5 square copper (green, with the threading tube) can withstand the highest power of several kilowatts,
Do not know why not mislead. The The The The The Fire resistance is IECGBBS6387. GB is the general principle of flame retardant and fire resistant wire and cable, quoted the above criteria...............
Q:How are various wire and cable models named?
Cable type a lot, here to give an example: ZRC-YJV22-0.6 / 1KV3 * 25 +2 * 16 This model specification means: C-class flame retardant (ZRC) XLPE insulated (YJ) PVC jacket 22) steel tape armor (0.6 / 1KV) 0.6 / 1 kV (3 * 25) 3 25 square (+ 1 * 16) plus two 16 square copper conductor flame retardant copper core steel tape armored cross-linked poly Ethylene insulated PVC sheathed low voltage electric power.
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:Fiber optic cable split box, integrated wiring box, cable terminal box, cable transfer box difference
A lot of ways ah! You look at the back of the set-top box, a total of three kinds of interfaces, namely, HDMI digital signal (while transmitting audio and video signals), red and yellow and yellow chicken complex habit of glycosylation moxibustion slim faint handle (red is the right channel, white Is the left channel, the yellow is the video), the color difference signal (red, green and blue, only transmission video), S terminal (single hole four pin, only transmission video). You just put the video to the TV, the audio to the amplifier on the line. . if your amplifier does not have HDMI interface, then put the set-top box HDMI connected to the TV, the set-top box red and white two terminals, connected to the amplifier red and white input terminal, and adjust the amplifier to the appropriate channel The . if your amplifier has HDMI interface, then through the HDMI series on the line, the first amplifier or the first TV will do. . TV set after a lot of them, there is a group of AVOUT output interface, this group of red and white terminals connected to the power amplifier is also OK.
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:Wire pipe inlet air switch trip how to do?
Wire pipe water problem: In fact, this problem is very serious, then this line should be scrapped or replaced, if you continue to reluctantly use not only to bring you the safety of trouble and the insulation of the wire dropped sharply! Because there is water it will lead to internal leakage can also make the wire heat caused by wire burning and trivial trivial accident, so be sure to take the necessary replacement! Supplement: the wire out of all, with the wire to grab the absorbent gauze and the like back to the twitching, many times for the gauze to dry the water, hair dryer toward the tube to heat the tube to dry and then re-layout of the new line.

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