• 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:I got two mobile GPS units for my car which use a mini USB interface for powering. One of the units didn't come with a cigarette adapter so I am trying to figure out how to power it. Can I just use a normal USB cable? I would tap the red wire into the fuse box in my car, and ground the black wire to the frame. So:-Can a mini USB cable handle 12V for ~5ft-Is that the right way to connect them?Thanks!
no because it will explode it only takes 5 to 4.5 volts and 2 to 2.5 volts i recommend using 5 volts and 2.5 watts bye
Q:I've got 1/0 gauge wiring and if i run this along my rear deck quot;speaker wireswill this cause noise?im not talking about the RCA cables.
Since the power wires in the car carry direct current (DC), it shouldn't interfere with the speaker wires. If the wires carried AC, there could be interference.
Q:I've looked on the internet, but it doesn't seem that the power cable for this printer is sold anywhere! Does anybody know if I'm able to buy it? And if so, where? I'm desperate. I don't want to buy a new printer. Even though this printer, actually, sucks. Let me know..........
This Site Might Help You. RE: HP Deskjet F4280 - Power cable sold anywhere? I've looked on the internet, but it doesn't seem that the power cable for this printer is sold anywhere! Does anybody know if I'm able to buy it? And if so, where? I'm desperate. I don't want to buy a new printer. Even though this printer, actually, sucks. Let me know..........
Q:hi,i was wondering...can battery powered tv have cable? or do the battery powered tv not need cable? my niece likes spongebob so if she does come over she can watch it....but i just want to know before i buy it...thanks...P.S:so do they already have all the cable shows?or they dont?and if they dont do you have to put cable....and if they cant....then i shouldn't buy it?
can battery powered TV's have cable? Some can and some can't. It depends on the details! Details: 1. Some battery powered TVs were made for use only with their built in antenna and don't have any way to connect to a cable system. You should look for a model with both a jack for an external antenna/cable and NTSC QAM tuners. 2. so do they already have all the cable shows? What do you mean? TVs are only receivers and you have to supply them with signals. Spongebob is a cable/satellite only program so you can't get it with an antenna. You have to have either cable or satellite TV service to get it. 3. battery powered Since you have to connect it to cable, why so you want it to be battery powered. Battery powered means small screen and limited run time between charging. 4. How does your local cable company supply it's signals? If it uses DTA adapters or is still using analog signals, any old TV will do.
Q:i need a power cable for a digitech rp 10 guitar effects processor. my teacher gave it to me and it doesnt have a power cord. if anyone has one please let me know. ill pay good money. but i wont pay an outrageous amount.
They have a wanted section!
Q:What are the causes of the power cable fire accident? How to prevent
DIY notebook, I recommend you look at the Jingdong Mall, where there are genuine hardware and equipment, that is just the same as the same to buy back, you have to go home to assemble it! Such as CPU, graphics cards, hard drives, processors, heat sinks, monitors and the like can be bought
Q:If you have an electrical device (e.g. a laptop), you'll sometimes notice that near the place where you plug the power adapter into it, there's a sign. It's composed of 3 circles, minus on the left, O inside a C in the middle, and plus on the right.What is this? And if I want to read/learn more about it where should I go?
If you look at the jack that go inside the power input you will see that it is an outside connect and an inside one.The O is the inside connect and the C is the outside one.Because it is a DC power adapter it has a + and - polarity .O,the inside ,is the plus and C,the outside,is the minus. Also on the adapter you can see the same thing! This is because some brands use the outside connect as + and you can burn your device if you use it!!!!
Q:I got a PNY geforce 9800 gt 1gb graphics card from bestbuy and once I got it I noticed it didnt come with a power supply cable which most of the 9800s require. Anyone know why it didnt come with the power supply cable.
Follow okorder
Q:Hi well I'm wondering if I can by those 8 pin 6 pin power cords what goes in to your graphics card to plug in to a power socket on the wall. Because I only have 500 wats and at the moment I have the 4850 and already I'm thinking about getting the GTx 295 or something can't remember. But it needs more then 500 wats lmao.I don't wont to upgrade my PSU so will I be able to plug the GTx in to the the wall like as a sprite power cable what goes in to the AC power cable in the wall?BTW I live in Australia so could could you tell me where you are like USA London ect just in case Australia doesn't have it. =)And where can I buy this transfer as well.
You cannot plug it into the wall. Its too sophisticated. A single GTX 295 requires a 700-watt PSU with a 50 Amp 12v rail. Insane power consumption going on here. Upgradable to quad-SLI (woo). If you can afford a GTX why can't you afford the PSU? A PSU regulates your power and protects your equipment from voltage spikes etc. Get the PSU. Whats wrong with your 4850? can your board support a x-fire setup (two 4850s linked?) That'd be cheaper in the long run.
Q:eSata means you connect the drive from outside the case. If so, what kind of cable do you use for power, assuming you're not opening up the case to use the regular molex connectors?
I use an external sata for backup with a usb cable converter the power comes from the usb cable, esata I suspect would be similar unless you are hooking it up with arj45 or something?

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