HJVV Bureau of symmetrical cable used in digital switching equipment
- Ref Price:
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m
- Supply Capability:
- 100000 m/month
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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:
HJVV
HJVVP
HPVV
HJCVV
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℃)
| No | Project | Unit | Standard | length；converted based on KM | ||
| 0.25mm | 0.5mm | |||||
| 1 | Single conductor dc resistance | Ω/km | ≤393.0 | ≤97.8 | measurement/L | |
| 2 | Insulation dielectric strength 1 min | V | AC 1000 DC 1400 | |||
| 3 | Each root insulated wires and the rest of the grounding and shielding of the insulation resistance between wire DC100 ~ 500 v | MΩ.km | +20℃ ≥500 +70℃ ≥1 | measurement×L | ||
| 4 | Shielded cable capacitance between core and shielding | nF/km | ≥50 | measurement/L | ||
| 5 | Near end crosstalk attenuation 1MHz 10MHz | dB/10m | ≥65 In study | ≥70 In study | ||
| 6 | The characteristic impedance 1MHz 10MHz | Ω | 105±15 97±15 | 95±15 90±15 | ||
| 7 | Natural attenuation 1MHz 10MHz | dB/km | ≤56 ≤130 | ≤32 ≤75 | Measurement/L | |
| 8 | delay 1MHz 10MHz | μs/km | ≤6.4 ≤5.7 | measurement/L | ||
| 9 | Wire disconnection, mixed line | - | Lines to keep, don't mix | |||
| 10 | Shielding continuity | - | continuous | |||
- Q:My hard disk power cable was burned and when i connected my HD to another system, it is working....so what could be the problem in my pc???
- Ask the question properly so that we can help you.It is the problem with your cable change it.
- Q:I bought a power wire off a dealer and in order to connect it to the battery I don't have the little fuse box at the end like most people have. Is this necessary for installation? Cause my friend said it might cause a fire..im no expert?
- The fuse isnt mandatory but its a good thing to have if your drawing alot of power then you will need it ive blown like 4 then i upgraded no more blown fuses but ya you should get one
- Q:power cables for 3 phase wire
- Three wire, single phase, 120V uses: line (usually black), neutral (always white), and ground (green or green with yellow stripe). Three wire extension cords should be sized for the estimated load in Watts, and the length of the cord. Armored cable for interior wiring must be #AWG14 minimum. Add details for a better answer.
- Q:what do ferrite beads do on power and audio/speaker cables do and is is it worth buying some and fitting them to reduce interference?or are they just as pointless as monster hdmi cables?thanks!.
- Generally they are fitted to fix a narrow bandwidth issue, so you would need to know what interference issue you are trying to fix. In most coaxial application this is for the roll off between shielding types.
- Q:how deep underground are electric cables put and gas pipes laid underground for houses and bungalows here in the united kingdom,the Supply would be coming from the street up the front garden,asking this as thinking of knocking in metal posts for garden fence,
- i put three rocks and my mom put a peace or qucomeber
- Q:My internet went down after a lightning storm. My cable modem is completely unresponsive and won't even power up, but everything else on the power strip is fine. So I am assuming the surge came through the coaxial. Someone suggested that the cable might fry any new modem I put on it, but that sounds off to me.Do I need to replace the coaxial, or will it be safe to just replace the modem?
- If modem won't power up, see if you can find an identical power brick and try that. What is important is the voltage is same and amperage is at or above what the correct one is. And the connector needs to be the same. If that doesn't work, replace modem.
- Q:I'm going to be running 1/0 gauge power wire in my car. My amp only accepts 4 gauge. Is it better to run 1 the whole way through and use power cable adaptors to fit the amp or run the 1 gauge into a distribution block that sizes the output wire down to a 4?
- Basic rule of electronics: Eliminate as many connections as possible. If you are using just the one amp, it is better to use one connector that reduces the size of the wire (or just trim it down to fit) than adding two more connections (with a distribution block).
- Q:What is the meaning of YJVVV and VV22-4 * 25 + 16 in electrical appliances?
- Should be caused by power line interference. You can buy a shield with the copper wrapped in audio cable and then placed next to the power cord can be, electronic city should have to sell.
- Q:i want to run a power cable from my battery from under the hood to my trunk for a amp that i want to power. i have a 94 mercury cougar. and i have seen it done under the car and through the firewall into the cockpit, if i want to run it through the firewall which way do i put it through? can someone send me a link to a pictured instructions? or just tell me how? thanx
- Look for a grommet around the steering column or brake pedal. Using a screwdriver from inside the car, poke a hole and with a piece of coat hanger, tape your wire to it and pull it through towards the engine side. If you can't find a grommet, drill a hole and put a grommet in.The center of the grommet should slide easily over the wire and drill the hole the same size as the grommets outer diameter in the groove. The fuse should be no more tha 18 from the battery. _______ (sigh) Technically, running your RCA wires and power wires shouldn't cause any problems and can be dubbed a myth. However, a lot of people will disagree. For induction between power and signal wire to occur, a form of AC (with some current) must be introduced on the DC power wire. The signal throught the RCA cables, doesn't have enough current to do this. However..... One solution, if you want to run them together, is to have good shielded RCA cables and/or to separate the RCA wires and twist them (as in twisted pair wire, twisted pair wire is used in CAT3, CAT5 and CAT6 communication wire to eliminate noise/interference/induction). Another solution is distance, you don't have to have cable on both sides of the car as a 1 foot separation will do just as good.
- Q:I purchased a LCD TV the other day and ran a cable line to it (via crawl space). I had to use a splitter to connect the new TV. I connected the cable directly to the TV and then the power cable to the outlet which “popped” and the power went out (breaker trips). I connect the TV power cable to a surge protector and the power goes out again (surge protector wasn’t even on). So I disconnect the cable from the tv and connect the power. Everything is fine until I try and connect the cable...let’s just say the spark was bright and hot enough to melt part of the connector on the TV! So I return the TV and get a different brand and the same thing happens when I plug it into a surge protector. To begin narrowing out possible problems I connect the cable to a regular 10 year old TV with no problems. It is a brand new cable with no cuts or fraying. Any suggestions?
- Something is seriously wrong, and you may need to get an electrician on the problem. You need to check the voltage between your set and the cable with a meter. There should be little or no measurable voltage. If you are getting a reading like 115 volts, then I suspect that the wall outlet into which your TV is plugged has been wired backwards, i.e. the black wire is on the white terminal, and vice-versa. The cable is (or should be) grounded where it comes into the house, but if the outlet has the hot wire on the wrong side, this might cause the problem you described. The wrong connection could have occurred anywhere along the line between your main panel and the outlet, so this may involve checking the connections at several outlets and light fixtures - whatever is on the same circuit as your TV's outlet.
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HJVV Bureau of symmetrical cable used in digital switching equipment
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m
- Supply Capability:
- 100000 m/month
OKorder Service Pledge
OKorder Financial Service
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