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
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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:Cable yjv-0.6 / 1kv-4 * 120 + 1 * 70 What does it mean?
- "Electrical design of civil buildings," 8.10.13; steel cable bridge straight section length of more than 30m, aluminum or glass fiber reinforced plastic cable bridge length of more than 15m, should be set up expansion joints. Cable bridge across the building deformation joints, should be set compensation device. The telescopic section is set for temperature change; the compensating device is to prevent settlement at the deformation.
- Q:I have my old 350 power supply cable but i got a new 520 one. do i have to use the defuly 520 power suppl cable? i use my old cabbke
- The cable merely supplies the power to the PSU. You're confusing the wattage of the PSU (350/520W) with the supply voltage (110/120/240v). The cable will work perfectly with either one?
- Q:My laptop cable sometimes won't stay in all the time. When it is connected, it has a blue circle around it, but sometimes that blue circle goes off (while it is plugged into the side of laptop) and the tool bar changes from showing a plug to showing a battery. Would there be something wrong with the cable line and it needs to be replaced?
- the power plug is damaged and will have to be replaced the cost about 90 to 125 dollars. look at it and make sure if it is the plug or the socket
- Q:What is the difference between wires and cables? Please provide a brief introduction
- The middle do not have to deal with, but also buried directly, deep 70cm, sand cover brick. It is difficult to repair, but economical and economical land.
- Q:Hey y'all , so I got this LG X120 Netbook thing and although it works fine when power supply cable is connected, it won't play just by getting supply from its own battery..also i tried starting it up with the power cable on, and after a few moments I unplugged it, and the screen went black-I mean the netbook was turned off by itself..any help with that? thanks
- lg has not got reports like these there might be sum internal fault in the hardware of the pc so u should try to exchange this or buy a lenovo 1
- Q:At the end of every work day I shut it down in the normal way (through the Start Menu) and then every morning I return to it and it won't turn on no matter how many times I press the on button or if I hold it down.The only way I can get the computer to turn back on is to remove the power cable for 10 minutes and then put it back in and hold the on button for about 10 seconds. This is a bit of a pain but also quite worrying as the computer is new.I wonder if my computer is broken or if this is an intentional feature. If so how do I turn it off?It might help to know that even when I have shut it down there is an LED on the back that stays on. In fact it stays on for 5 minutes even if I take the power cable out!I have a Dell Vostro 260S PC. It runs Windows 7 64-bit and the processor is an Intel i3Please help techies.
- This sounds like a bad shutdown. Are you sure it's shutting down and not hibernating or sleeping? As it's new, you should call Dell, but you can try this. Close all your programs and shut it down by holding the power button in until it's off (Just 5-6 seconds.) See if it starts up after that. Edit:What happens if you try shutting down with the On/Off switch?
- Q:the power cable for my macbook is frayed and today started to spark. its currently unplugged, because of the sparking. i am trying to figure out if the power cable is covered under warrantee. the macbook is still covered under warrantee until August 2011Thanks in advance
- They do NOT fray like that without careless handling, which is NOT covered on warranty.
- Q:What is the meaning of YJVVV and VV22-4 * 25 + 16 in electrical appliances?
- General 2.5 square wire load is 2 kilowatts, and rubber sheathed cable, full load can reach 3 kilowatts are no problem (estimated again, it is not safe). The load level of the wire is mainly dependent on the current, but also on the voltage level. Under normal circumstances 50A below 1 square millimeter safe carrying capacity is 6A, 50 ~ 100A current 1 square millimeter of the safe carrying capacity is 5A, 100A current above the general take 1 square millimeter of the safe current is 2.5A; so many large square copper cable You can calculate the current. According to the three-phase alternating current formula: P = 1.732 * U * I * cosφ, cosφ is the power factor, select 0.8; this is the three-phase power calculation formula. Single phase: P = U * I * cosφ, cosφ is the power factor The power factor is 1 for the resistive load and 0.8 for the inductive load.
- Q:Can i leave my laptop on the whole day and just turn it off at night? It has a standby mode but i dont no if thats resourceful. Also it has sleep and hibernate. Will leaving the power cord in be bad?
- most of the time, batteries will not be harmed by leaving them on charge. however the way most people use is shutting down the system turning off computer from start button. power cord left pluged in would not matter if system were shut down.
- Q:I want to buy an Xbox 360 from the US (I really don't care about that stupid PAL/NTSC thing seeing as I can just buy all the games from OKorder) and I was wondering how and where I would get a proper Microsoft-made power cable for Australia. Do they sell them through their website? If not, are there any other places that sell the cables online or in Adelaide?I've heard they can be bought on OKorder, but I'm nervous about buying a cable from OKorder because I want to make sure that it is DEFINITELY a Microsoft cable and not a third-party one, and while OKorder is usually pretty good I don't want to take chances with something like this.
- OKorder is a good option... power cables aren't really that important and even a 3rd party can most likely get it right. you could call microsoft but they will charge you and arm and a leg for the replacement part. what you might want to do is get a power adapter from any travel store so you could plug the u.s. power cable into the australia wall. i'd try the power plug adapter before buying a different power brick.
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Send your message to us
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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