YJV22高壓電力電纜是采用化學(xué)方法或物理方法,使聚乙烯分子由線型分子結(jié)構(gòu)轉(zhuǎn)變?yōu)槿S網(wǎng)狀結(jié)構(gòu),由熱塑性的聚乙烯變成熱固性的交聯(lián)聚乙烯,從而提高了聚乙烯的耐老化性能、機械性能和耐環(huán)境能力，并保持了優(yōu)良的電氣性能。

交聯(lián)聚乙烯絕緣電力電纜導(dǎo)體的允許長期zui高溫為90攝氏度，較低絕緣電纜、聚氯乙烯絕緣電纜和聚乙烯絕緣電纜高，且具有重量輕、結(jié)構(gòu)簡單、使用方便、耐化學(xué)腐蝕和敷設(shè)不受落差限制等優(yōu)點。

26/35KV電力電纜，18/30KV交聯(lián)電纜，12/20KVYJV電纜，8.7/15KVYJV22電纜線，6/10KV鋁芯交聯(lián)電纜線，3.6/6KVYJLV單芯電纜　　

中低壓交聯(lián)電纜產(chǎn)品標準  Standard

本產(chǎn)品按GB12706《額定電壓35V及以下銅芯、鋁芯塑料絕緣電力電纜》標準生產(chǎn)，同時還可根據(jù)用戶需要按電工委員會推薦標準IEC、英國標準、德國標準及美國標準生產(chǎn)。

The product is manufactured according to the standard of《GB12706 or IEC、BS、DIN and ICEA upon request.

適用范圍  Applications

本產(chǎn)品適用于工頻額定電壓3.6/6kv～26/35kv輸配電線路作配送電能子用。

The product is suitable for use in power transmission and distribution lines with rated power frequency voltage 3.6/6kv～26/35kv.

使用特性  Operating characteristics

· 工頻額定電壓U0/U為3.6/6kv～26/35kv。

Rated power-frepuency voltage U0/U: 3.6/6kv～26/35kv.

· 電纜導(dǎo)體的zui高允許工作溫度：90℃。

Max.admissible operating temperature of the conductor:90℃.

· 短路時（zui長時間不超過5s）電纜導(dǎo)體的zui高溫度不超過2500C。

Max. short-circurt temperature of conductor shall not exceed 2500C.

（5s maximum duration）

· 電纜敷設(shè)時環(huán)境溫度應(yīng)不低于00C。

The ambient temperature under installation should not below 00C.

· 電纜彎曲半徑：三芯電纜不小于電纜外徑15倍；單芯電纜不小于電纜外徑20倍。

The bending radius of a single-core cable should not less than 20 times of the cable diameter.

The bending radius of a single-core cable should not less than 15 times of the cable diameter.

電纜額定電壓的選擇   Voltage designation

· 電纜的額定電壓應(yīng)適合于電纜系統(tǒng)的運行狀況，用U0/U（Um）kv表示。

U0－電纜設(shè)計用的導(dǎo)體對地或金屬屏蔽之間的額定工頻電壓；

U－電纜設(shè)計用的導(dǎo)體間的額定工頻電壓；

Um－設(shè)備可承受的“zui高系統(tǒng)電壓"的zui大值。

The rated voltage of the cable for a given applixation shall be suitable for the operating conditions

in the system in which the cable is used,and is expressed in the form of U0/U（Um）kv

Where:

U0－The rated power-frequency voltage between conductors and earth metallic screen ,for which the cable designed;

U － The rated power-frequency voltage between conductos, for which the cable designed;

Um－ The maximum value of the“highest system voltage"for which the equipment may beused.

· 三相系統(tǒng)用電纜的U0值推薦如下表：

The values of U0 recommened for cable to be used in three-phase systems are listed below:

A類系統(tǒng)──該類系統(tǒng)任何一相導(dǎo)體與地和接地導(dǎo)體接觸時，能在1min內(nèi)與系統(tǒng)分離

B類系統(tǒng)──該類系統(tǒng)僅包括單相接地故障短時運行的條件，接地故障時間應(yīng)不超過1h, 但在任何情況下，zui長不超過8h每年接地故障總持續(xù)時間不超過125h；

C類系統(tǒng)──不屬于A類、B類的系統(tǒng)。

System category A──This category comprises those systems in which any phase conductor that comes in contact with earth or an earth conductor. is disconnected from the system within 1 min.

System category B ──This category comprises those system which,under faultconditions,are operated,are operated for ashorttimewith one phase earthed.This period should not exceed 1 h..Fora longer period, not exceeding 8h on any occasion, can be tolerated.The total duration of earth faults in any year should not exceed 125h.

System categeory C──This category comprises all systems which do not fall into A and B

電纜的型號Type of cable

直流

電阻

在空

氣中

直埋土壤中

導(dǎo) 體

屏蔽層

銅帶

銅絲

mm 2

mm

mm

mm

kg/km

Ω/km

A

A

KA

KA

KA

3×25

3.4

2.4

48

3190

0.727

120

125

3.69

2.958

-

3×35

3.4

2.5

50

3731

0.524

140

155

5.15

2.958

-

3×50

3.4

2.6

53

4396

0.387

165

180

7.31

2.958

-

3×70

3.4

2.7

57

5198

0.268

210

220

10.2

2.958

-

3×95

3.4

2.9

62

6350

0.193

355

265

13.8

2.958

-

3×120

3.4

3

65

7257

0.153

290

300

17.4

2.958

-

3×150

3.4

3.1

69

8383

0.124

330

340

21.7

2.958

-

3×185

3.4

3.2

72

9741

0.0991

375

380

26.7

2.958

-

3×240

3.4

3.3

78

11854

0.0754

435

435

34.6

3.301

-

3×300

3.4

3.4

84

14861

0.0601

495

485

43.1

3.301

-