6kV~35kV 中低壓銅芯及鋁芯交聯(lián)聚乙烯絕緣電力電纜(YJV電纜,YJV22電纜,YJLV電纜,YJLV22電纜)XLPE Insulated Power Cable | |||||||||||||||||||||||||||||||
高壓電力電纜 交聯(lián)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(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體的允許*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*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(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*如下表: The values of U0 recommened for cable to be used in three-phase systems are listed below: | |||||||||||||||||||||||||||||||
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A類系統(tǒng)──該類系統(tǒng)任何一相導體與地和接地導體接觸時,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 | |||||||||||||||||||||||||||||||
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執(zhí)行標準:GB/T12706-2002
使用特性
· 工頻額定電壓U0/U為6kv/10kv~26/35kv。
· 電纜導體的zui高允許工作溫度: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。
· 電纜敷設(shè)時環(huán)境溫度應(yīng)不低于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。
電纜額定電壓的選擇
· 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。
導體標稱截面 | 絕緣 厚度 | 護套 厚度 | 電纜近似外徑 | 電纜近似重量 | 20℃ 導體 | 電纜載流量 | 短路電流 | |||
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 | - |