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

class 1

class 2

1.2

3.6

7.2

17.5

0.6

1.8

3.6

8.7

0.6

3.6

8.7

　　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.

4．Characteristics

　-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	略

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

Cross-sectionmm 2

Copper

Aluminium

Cross-sectionmm 2

Copper

Aluminium

1.5

2.5

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

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

6．Calculation 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

7．Factor 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 have a ASUS M4A87TD-USB3 mobo and a Corsair 550 Watts Power Supply. Ive looked in the manual andit says you need to connect the one that ive connected and a 4 pin. It says that if you dont connect the 4 pin the computer wont boot! is there a way around this or it f**ked?: Just replace the power supply. What's the problem? You have an OLD ATX powersupply with 20-pins. The NEWER ATX power supply is 20+4 pins. --- Kasey C, PC guru since Apple II days Make it idiot proof and someone will make a better idiot.

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Q: I am getting a new 160 amp high output alternator for my 2005 Mazda 3 2.3L. I am running a 1000w amp with two subs. I have the stock alternator in it right now. There are two power cable kits available for me to get. One that has 4 gauge wire with a 100 amp fuse and the other, 1 gauge with 150 amp fuse. Which kit should I get? Can I just add 4 gauge wire along with my stock wire instead of the 1 gauge kit? What are the fuses for and which one would work better? I know nothing about this. Thanks.: I would go with the 1 ga wire. The fuse keeps the wire from setting your car on fire. The size of the alternator does not matter. The battery should supply 700 amps or so.

Q: Its a Extreme power plus 700w the U.S.A and Canadian type.: so?? if you want to use it, go ahead baby!!

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Q: Many of the complete amplifier kits, example rated for a 700 watt amplifier come with a 10 gauge power cable. Many of the gauge charts from the online car audio techs, would recommend a 4 gauge wire, but they sell the amp kits with the 10 gauge. I guess bigger is better, more efficient and safer for the installation, but I would expect them to add some * adjacent to the kit specs with their recommendation.: here okorder /... for subs i would go no smaller than 4gauge remember that if you want to upgrade in the future you will have to remove all of the old wire if its not thick enough and its more time/cost effective to go with the thicker stuff from the gate and use a distribution block to down size the wire at the amp

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