HJVV Bureau of symmetrical cable used in digital switching equipment

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100 m
Supply Capability:
100000 m/month

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Product Description:

一、application scope

The cable is mainly used in digital switching equipment internal or short section of the connection between digital switching equipment, the highest 10 MHZ transmission frequency.Can also be used as an internal or and other digital devices between the short section of the connection.Can meet the digital switching system transmission of high bit rate digital signal.With smaller diameter, ease of installation and connection.
Product the YD/T 818-818 standard design and production.Its technical indicators fully meet the standard requirements.The structure stability of products reach the international similar products level.


二、cable type

Cable type by type and specification, it said the following:





三、cable construction

1, the conductor: the nominal diameter of 0.25 mm or Φ Φ single tin round copper wire 0.5 mm.
2, insulation: use PVC insulation, conductor chromatography using monochromatic or additive color ring.
Line 3, line to: to adopt the section from twisting synthesis of crosstalk in order to meet the strict requirements, and in accordance with the provisions of chromatography in order to easy to distinguish.
4, cable conductor: line to press with twisted into cable core type or unit type.Overlap with a layer of polyester film around the package.
5, block: cable can have cable shielding.According to user requirements cable can be blocked.Shielding have single plastic coated aluminum foil overlapping winding and shielding.Tin plating round copper wire textile block, or two methods at the same time use the shielding.
6, sheath: sheath for PVC plastic, color is gray.Or the color of the user requirements.

performance (20℃)






length;converted based on KM




Single conductor dc resistance






Insulation dielectric strength 1 min
Between conductor and the conductor and shield, shielding and shielding


AC     1000

DC 1400


Each root insulated wires and the rest of the grounding and shielding of the insulation resistance between wire DC100 ~ 500 v


+20℃ ≥500

+70℃ ≥1



Shielded cable capacitance between core and shielding





Near end crosstalk attenuation





In study


In study


The characteristic impedance









Natural attenuation


















Wire disconnection, mixed line


Lines to keep, don't mix


Shielding continuity




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Q:upside down PSU and SATA power cables?
Upside down drives would work, but they're not likely to fit properly with the existing mounting holes. I ran the power cable to the top drive and worked down from there, so it didn't require twisting. I've also used only the last connector on two different cables. There's nothing wrong with twisting the connector wires, assuming they aren't under tension after installation.
Q:How to calculate power cable size, tell me formula?
There are two issues to consider, cable heating and voltage drop. Of the two, voltage drop is by far the easiest. You need to determine what the allowable voltage drop in you cable is. The voltage drop is just I x R where I is the current and R is teh round trip cable resistance. The specification of 100 kW isn't enough. If its a high tension 100 kV line, the current is only 1 amp and a run of 16 AWG wire would deliver about 99,999 volts out of the original 100,000 volts to your load. If its a 100 volt system then a 4 AWG wire would only deliver only 20 volts to the load. The formula for wire resistance (in AWG) is that 10 AWG has 0.001 ohm/ft. Each increase of 1 in the gauge increases resistance by the cube root of 2 (about 25%). You calculate by picking what voltage drop you can live with, for the known current figure the resistance, knowing the length figure the resistance per foot, and then pick the AWG using the above. The second concern is wire heating. Although you could do the heat transfer calculations, instead look up the allowable ampacity for any wire in an electrical engineers or NEC handbook.
Q:Does this power supply have enough cables?
The latest AM3 motherboards I've seen all have a *4* pin CPU connector. It's somewhat common for power supplies to have a 4+4 CPU power connector. The specifications for your listed power supply list an 8-pin (EPS12V) motherboard connector. Unless that is a 4+4 configuration, you won't be able to power your motherboard with it. Other than that, the power supply would probably work OK. If you need a different power supply, check out a Corsair 650TX. That has the specifications and connectors that it will work OK with your video card and CPU, regardless of what motherboard you choose.
Q:Calculation method of wire and cable outer diameter
Tell the truth like a three-core cable, five-core cable calculation is more complicated you math good painting geometric map can still be considered
Q:Xbox 360 console, do they all have the same power cables?
The 360's power supply is actually 2 parts. First is the cable that actually plugs into the wall. This is identical across all 360s, however the wall plug differs from country to country. Normally you can just get an adapter from the electronics store for this. However, the second part (the brick) is very different. First it differs depending on the country you're in, and then it differs depending on the specific model of 360 your have. Newer models don't need as much power, so their bricks output a lower amount of DC current. Also, the electrical system differs from country to country. In the US for instance, the power system runs on 120V but in most of Europe (including the UK) it's 220V. I do not know if the bricks are capable of adapting to both power systems. If not, plugging power brick from the US into the wall in the UK will damage the power brick and maybe even the 360. The Halo3 360 is one of the older models, while the Arcade is one of the newer ones. You may have damaged your 360 because the power brick sent too much power into the 360. You'll have to call Microsoft's support line so you can read the exact model numbers off the 360 and power brick to determine if they're compatible. They can probably also help you with obtaining a new cable or brick as well.
Q:Where can I buy new Xbox 360 cables?
Also consider Radio Shack.
Q:how to test the power output of a usb cable?
The max power you can draw from a USB port is 2.5W (500 mA at 5V)
Q:Power cable for portable dvd player battery says dc in 9v - 12 v, the player itself says 7.2v to 12v?
What is the question here? Are you looking to buy a replacement power cable? One of the multi use ones would work fine, set it for 9 volts. The other important part is the current rating (amps or mA). What does the DVD player say it needs? Make sure the new power cord can supply at least that much. Voltage: try 9 first, if not work then try 10 or 11 or 12. No higher than 12. Current: the same number or higher than listed on the player.
Q:Does throwing punches with weighted cables increase punching power?
No power is genetics. You either have it or dont. It'll increase speed. Don't do to heavy or you'll damage your ligaments and tendons long term.
Q:Where can I find a replacement power supply to SATA cable?
You would need two, since you have two optical drives and a HDD. You can get them off Newegg or OKorder. I suggest flOKorder as they will be cheaper and do the same thing. EDIT: Okay you have a modular power supply and lost the cable. Yeah your best option is to contact the manufacturer and see if they can sell you a cable.

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