國標YJV22-8.7/15KV-3*240高壓鎧裝電力電纜

交聯聚乙烯絕緣電力電纜是采用化學方法或物理方法,使聚乙烯分子由線型分子結構轉變為三維網狀結構,由熱塑性的聚乙烯變成熱固性的交聯聚乙烯,從而提高了聚乙烯的耐老化性能、機械性能和耐環境能力，并保持了優良的電氣性能。  

　　交聯聚乙烯絕緣電力電纜導體的允許長期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、結構簡單、使用方便、耐化學腐蝕和敷設不受落差限制等優點。
26/35KV電力電纜，18/30KV交聯電纜，12/20KVYJV電纜，8.7/15KVYJV22電纜線，6/10KV鋁芯交聯電纜線，3.6/6KVYJLV單芯電纜　　
中低壓交聯電纜產品標準  Standard      
　本產品按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，同時還可根據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。
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）  
· 電纜敷設時環境溫度應不低于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
· 電纜的額定電壓應適合于電纜系統的運行狀況，用U0/U（Um）kv表示。
U0－電纜設計用的導體對地或金屬屏蔽之間的額定工頻電壓；
U－電纜設計用的導體間的額定工頻電壓；
Um－設備可承受的“zui高系統電壓"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──該類系統任何一相導體與地和接地導體接觸時，能在1min內與系統分離
B類系統──該類系統僅包括單相接地故障短時運行的條件，接地故障時間應不超過1h, 但在任何情況下，zui長不超過8h每年接地故障總持續時間不超過125h；
C類系統──不屬于A類、B類的系統。
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 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

-