• XLPE INSULATED POWER CABLE System 1
XLPE INSULATED POWER CABLE

XLPE INSULATED POWER CABLE

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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


Q:Does it also come with the cable that connects it to the monitor? Thanks!
Yeah, it comes with a three prong power cable and a bunch of internal cables, one or two for the motherboard, one or two for graphics cards, and a bunch for drives.
Q:I got a free graphics card from my cousin and my computer only has the SATA slots for graphic cards and the one he gave me has the 4 Pin cable. Is there anyway to get it converted or any cables that can go from 4 Pin to sata? I wanna see how this graphics card goes when its working fully.
Sure you don't have any molex connectors at all? Not even in your DVD drive? If so, get a Y adapter with a good amount of length. If not, then look for an adapter. Be careful as the vast majority are to convert a molex power cable to a SATA power connector, not the other way around. In the worst case you could hook up a separate power supply to it.
Q:I am trying to install a dc power outlet and it says i need to connect to the direct power cable. How do I find it?
I dont know were the direct power is but there is a remote pw wire or the power comes on with the key , there is a pink wire with a black stripe in your fuse box under the dash that is remote power wire/
Q:There is currently a power cable going into the back of my primary sata hard drive but i want to put another hard drive in but there is not another power cable
You can get a 4 pin molex to Sata power Adapter. heres one that'll power both your hard drives.
Q:My friend I were going to play his second Xbox 360 n his living room. Went to turn it on and the RROD turned up with three lights. So we took this one and hooked it up to the cables in his room. And guess what? No RROD... So, I am lead to belive that the Xbox 360's power cable is the one that causes the RROD. Only problem is that most people can' test this due to not having a second power cable. So post your ideas about this idea. Could Microsoft be lying to us by saying that the malfunction is inside there console. I'm only 14 and i figured this out. So, how is it that no one else has??
It's okorder /
Q:My brother lost the cable from the wall to the back of the power supply for his dell somehow, and I have one for a different brand (gateway). Are the cables themselves an interchangeable industry standard?
If you're talking desktops, then yes, the cord is an industry standard. You can swap them around as you wish. The same 3 prong cable is used by many other electronic devices (TVs, stereos, etc) Laptop chargers are an entirely different matter.
Q:I feel like this is a stupid question but yeah, I m getting a PC and wonder about all the cables. It doesn t have vga output so I m going with a separate hdmi cable to the screen, but power cables I suppose will be there? Like that s not a separate thing ooor...?
If you are buying a PC that is bundled with a monitor, all of the necessary cables to set it up should be included (except a network cable). If you are buying the PC and monitor separately, the PC should come with a power cable, and may or may not include a video cable.The monitor should include a power cable and at least one video cable that the monitor supports. Monitors will typically come with a DVI cable and a DVI to VGA adapter if DVI is supported. If you are using a television instead of a monitor, it will likely only come with a power cord. You would need to buy your video cable separately.
Q:hey guys, i recently bought a new desktop computer however when i unpacked it and put it all together i discovered that i had not received a power cable for the tower. i discovered an old one in the mess that is my bottom drawer and was wandering does it matter what power cable is used for the tower? or are there different power cables for different PSU's?
If the PSU is 800 watts or less, it likely doesn't matter. Look at the power cable and make sure it doesn't look particularly thin or flimsy. Most power cables are rated for 6A or more, which should be good for over 700 watts. Even most computers with 800 watt power supplies or more don't actually draw over 600 watts. I have seen power cables intended for laptops or monitors that were only rated for 2A. That's only good to 250watts, and a large desktop could easily draw more than that.
Q:The inside of my computer has a modular power supply that did not come with enough cables, and I have a graphics card that requires two 6 pin connections to the power supply. Luckily, my power supply has just enough open slots. The problem is that I can't find a place to buy a simple 6 pin cable. It needs to be about a foot long to reach. Can someone please help me? I would prefer newegg if possible, but I searched there and I'm getting pretty frustrated.
You'd need to buy it from your PSU's manufacturer as those tend to be proprietary. It's strange it didn't come with all the cables though.
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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