Physical Foaming Coaxial Cable...........

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Shanghai
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TT OR LC
Min Order Qty:
100 m
Supply Capability:
100000 m/month

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Product Description:

The standard of SYWV 75 series type of cable distribution systematic physical foamed PVC insulation coaxial cable sector wad fkrmulated in 1997 by the Electronics Ministry for producing physical foamed cable , the standard number:SJ/T11138-1997, our factory has also formulated its emterperprese standard following the above one.

 

A: Type: The names of different types of procucts are given in the light of some relativre regulations so as toreflect their main special characteristics.
Forinstance

B.Specifications:Following the GG11323-89 Regulations (cable distribution system-used coaxial cable shouldbe tested) and for meeting the development requirements of cable television as weii as implementing the sectors standard (SYKV longitudinsl hole olythene insulation caaxial cable), the insulation outer diameter should be 4.80mm, 9.00mm and 11.5mm separately.
C. Inner Conductor : Except for copper conductor for television cable production in foreign countries according to different line diameters and specifications . Therefore, in our production atandard , the copper-covered steel line inner conductor is added in -5, -7 cable and the copper-covered aluminumline inner conductor adder in -9, -12 cable so as to increase the products intensity and reduce cost at a prerepuisite of ensurinh quality.
D.Outer Conductor: The aluminum-magnesium alloy woven line is generally used in foreign countries .For saving copper materials and reducing cost , -5, -7, -9 cables is allowed to be woven with aluminum magnesium alloy line.
The aluminum tube is always used as outer conductor for bibsized cable in the countries of the United Statess and Japan etc. so to heighten properties of screening and fine moist-proof and mechanical protection.SO the aluminum tube outer conductor can be adopted for-9,-12 cables.
E.Insulation:The adopted physical foamed polythene has its fine hifrequency property and identity as well as fine moist-proof porperty.
F.Screening Attenuation:The property of cable screening can be reflected through screening attenuation index,which is one of the key tested indexes of CATV and it willensure the high quality reception of CATV system.

 

 

 


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Q:Emergency cable T-box and cable distribution box of the information?
The incoming and outgoing wires are electrically connected together The potential is the same, which is suitable for tapping or branch wiring It is common practice to add the number of lines back to the number of times The three-branch cable splitter box, which has three equipotential bonding points on each phase, can be used as a second or two-in-one Cable distribution box contains U, V, W three-phase, three-phase circuit structure is the same, along the row together 2 High-level distribution box High-level distribution box containing switching equipment, both from the ordinary distribution box of the tap, branch, but also from the power supply circuit control, conversion and change the mode of operation The switch fence roughly divides the cable circuit into the inlet and outlet sides, and the potential on both sides can be different The switchgear itself has a larger volume, so the high-level distribution box size is relatively large, the height is generally 14 ~ 18m, the depth of about 09 ~ 10m, the length of the number of switching devices according to the number, M to 24 m The shape of the box is similar to that of an outdoor box transformer, and there are a number of active doors on the shell Some doors are designed for the operation of the switchgear Some doors are provided for the installation or maintenance of the cable connection device The
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Q:1.2 meters below the road can use pvc tube wear armor cable?
Have to fight trumpet, mainly to protect the cable jacket is not scratched
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Q:1omoons / days sensitive quad-core network set-top boxes can be used on old-fashioned televisions.
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Q:What is the length of the wire that affects voltage and electricity
When the cable is laid on the multi-layer bracket, the cables are arranged from top to bottom, the first layer is the high voltage cable, followed by the low voltage power cable. The control cable is placed on the lower part of the power cable. At the bottom of the instrument cable, when the low voltage power cable With the instrument cable in the same layer of laying, should be added partition isolation. Computer communication coaxial cable, full length are required to shield the use of closed trunking.
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Q:Wire inside the two lines, red and black, black line is the line of fire or zero line ah?
. 1.8.7 / 10kV U value of 10KV, which can withstand the maximum voltage of 12KV8.7 / 15kV U value of 15KV, which can withstand the maximum voltage of 17.5KV2.8.7 / 10kV is 10KV system in the first Class II cable (fault time can be greater than 1 minute) 8.7 / 15kV is the first type of cable in the 15KV system (failure time is not more than 1 minute) 3.U0 / UU0 - conductor and insulation shield between the voltage U - the The voltage between the conductors is two, the cable is usually a few or several groups of wires [at least two] stranded from the rope similar to the cable, each group of wires insulated from each other, and often around a central twist The entire outer package has a highly insulated cover. Multiple in the air or in the ground, underwater, for telecommunications or power transmission.

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