XLPE INSULATED POWER CABLE

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Product Description:

It applices to the transmission and distribution lines with rated voltage from 0.6/1 kilovolts to 26/35 kilovolts , while flame retardant power cable is used in theplaces with special demands of flame retardant property , where cable is laid tightly


Table of rated voltage for 3 phase cable

U

Um

Uo


class 1


class 2

1

3

6

10

15

20

35

1.2

3.6

7.2

12

17.5

24

42

0.6

1.8

3.6

6

8.7

12

21

0.6

3.6

6

8.7

12

18

26

  class 1 applies to system of the duration of syngle phase earthing fault normally less than 1 minutes each time or the system of maximum duration less than 8 hours each time, but the total duration not more than 125 hour.

  class 2 applies to system of more duration of earthing fault or the system with higher requirement to property of insulation.

Standards

  The products are produced in accordance with GB/T12706-2002, i.e. , Copper or Aluminium Conductor Plastic Insulated Power Cable with Rated Voltage UP to and Including 35 kilovolts,part 3-XLPE Insulated power Cable.

4Characteristics

 -maximum rated temperature of conductor is 90℃

 -maximum temperature is 250℃ when cable is shorted for less than 5 seconds

 -ambient temperature should be not lower than 0℃ when cable is installed

 -minimum bending radius is as follows when cable is installed

五 Key Technical Property(for type test)



Rated voltage,unit:KV


3.6/6

(7.2)


6/6

6/10


8.7/10

8.7/15


12/20


18/20

18/30


21/35


26/35


ConductorD.C.resistanceunit:Ω /km


see the following table



Partial discharge test at1.73time U o ,unit:pC


< 5


Partial discharge test at1.73time U o afterbending test,unit:pC


< 5


pC Partial discharge test at1.73time U o after heat cycle test,unit:pC
Partial discharge test at1.73time U o ,unit:pC




< 5


4hours A.C.volatage test,not break down,unit:kV


14.4


24


34.8


48


72


84


104


Pulse voltage test,unit:kV


60


75


95


125


170


200


15minuses power frequency voltage
withstanding test,unit:kV


12.5


21


30.5


42


63


53


65



Rated voltage, unit: kV

3.6/6

(7.2)

6/6

6/10

8.7/10

8.7/15

12/20

18/20

18/30

21/35

26/35

XLPE hot set test

Test condition:15min., 20N/cm2

Max. elongation under load

Max. elongation after cooling,no load





175



15

Min. tg δ at AC 2kV and 90±5℃



8×10



10×10

Mechanical and physical property of insulation and sheath


Maximum D.C. resistance at 20 ℃    unit: Ω /km


Cross-sectionmm 2


Copper


Aluminium


Cross-sectionmm 2


Copper


Aluminium


1.5

2.5

4

6

10

16

25

35

50

70


12.1

7.41

4.61

3.08

1.83

1.15

0.727

0.524

0.387

0.268


~

12.1

7.41

4.61

3.08

1.91

1.20

0.969

0.641

0.443


95

120

150

185

240

300

400

500

630

800


0.193

0.153

0.124

0.0991

0.0754

0.0601

0.0470

0.0366

0.0283

0.0221


0.320

0.253

0.206

0.164

0.125

0.100

0.0778

0.0605

0.0469

0.0367

6Calculation Condition of Ampacity

 -ambient temperature is 25℃ (underground) , 40℃ (air).

 -conductor working temperature is 90℃

 -soil heat resistance coefficient is 1.0℃·m/W , but not consider its rise resulted from water migration when it operates continuously.

 -gap between axis of cable and surface of ground is 700 millimeter when it is laid in earth

  -for many cable being laid in parallel. gap of axis of cables is 2 ti

7Factor of Affecting Ampacity of Cable

 1 Ampacity coefficient when many group of cable are laid

Coefficent when cable is laid horizontally,directly in earth


Numbers of group


2


3


4


5


6


7


8




Gap


Contacted


0.79


0.69


0.63


0.85


0.55


0.50


0.46


7 cm


0.85


0.75


0.68


0.64


0.60


0.56


0.53


25 cm


0.87


0.87


0.75


0.72


0.69


0.68


0.64


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Q:Flat power cables?
Hi Allotted, The best thing to do is cut into the wall and run the cables down the inside. By the time you have power, DVD/VCR, cable connection and a dozen other things you have a huge bundle of cables. Cut a opening behind the TV and run the wires down the inside to the floor. Make an opening to bring them out there. I did mine like that and while it took some effort the results were a great looking installation. Norm
Q:Laptop power cable won't stay connected?
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Your PSU, should have all of the needed connectors.
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1) When you unplug the power cable, it spins down, because there is no power. In order to read data from the hard disk it needs to be spinning. When it is not spinning, you cannot read data from it. Some power saving systems will allow you set the hard drives to spin down after a long time that it has not been used, to conserve power. After that, to read from the disk it needs to be spun up, and that takes a few seconds. 2)No. 3) You cannot manually spin a hard disk, it spins at 7200 (some models 5400) rpm. That's VERY fast.
Q:Is my power supply going?
Assuming you've checked that the power cable to your GPU is still attached? And/or tried different 6-pin plugs into your GPU? If you've tried that and it still does the same, it is likely to be the power supply failing. Only way to rule it out is to try another device, such as GPU, which requires the 6-pin power addition from the PSU - if that works then it's your GPU, if it doesn't work then your original diagnosis was most likely correct.
Q:Why dont overhead power cables have rubber/plastic cover so that if they fall they cant cause serious injury?
In addition to factors cited in the above answer, I think it's a matter of cost/economy as well. In a more developed/ wealthier country such as the USA bare high voltage power lines are hung aerially only in less populated areas and over trips of land that are called utility easements, dedicated to power transmission and no other structures are allowed to be built there. These high-voltage transmission lines are buried underground, in concrete ducts when they run through densely populated areas, a very expensive way to transmit power. Most of the aerial lines (lines hung overhead) you see in populated areas in the US are covered (insulated) low voltage telephone lines or covered (insulated) medium-voltage power (electric) distribution lines going to neighborhoods and homes.
Q:How do I repair a Ribbon Power Cable for a Playstation 2 Power/Eject Ribbon Cable?
Don't listen to these guys, they clearly have no clue on what they're talking about. I am a developer at Microsoft so I know a thing or two about computers. Install it, hit run and problem solved. It shouldn't take you more than 5 minutes.
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The same is 1080P resolution, the computer with the TV is not full screen, it is possible that the frequency of computer graphics output and TV default frequency is different (the national standard is PAL50 Hz), so as long as the graphics output frequency into 50 Hz will be full screen. Win7 mouse right click, select the resolution, the remaining steps see below:
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Well I don't know of any extension chord that could replace this fairly crucial component . I think you should look for another one with a friend that maybe has a broken xbox or an old pc.. You might find the piece you're looking for on another machine like a computer or a printer . Look around and see , good luck ;)

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