YJV2*70平方高压电缆 YJV高压电力电缆价格
6kV~35kV 中低压铜芯及铝芯交联聚乙烯绝缘电力电缆(YJV电缆,YJV22电缆,YJLV电缆,YJLV22电缆)XLPE Insulated Power Cable |
高压电力电缆 交联聚乙烯绝缘电力电缆是采用化学方法或物理方法,使聚乙烯分子由线型分子结构转变为三维网状结构,由热塑性的聚乙烯变成热固性的交联聚乙烯,从而提高了聚乙烯的耐老化性能、机械性能和耐环境能力,并保持了优良的电气性能。 交联聚乙烯绝缘电力电缆导体的允许*zui高温为90摄氏度,较低绝缘电缆、聚氯乙烯绝缘电缆和聚乙烯绝缘电缆高,且具有重量轻、结构简单、使用方便、耐化学腐蚀和敷设不受落差限制等优点。 26/35KV电力电缆,18/30KV交联电缆,12/20KVYJV电缆,8.7/15KVYJV22电缆线,6/10KV铝芯交联电缆线,3.6/6KVYJLV单芯电缆 中低压交联电缆产品标准 Standard 本产品按GB12706《额定电压35V及以下铜芯、铝芯塑料绝缘电力电缆》标准生产,同时还可根据用户需要按电工委员会*标准IEC、英国标准、德国标准及美国标准生产。 The product is manufactured according to the standard of《GB12706 or IEC、BS、DIN and ICEA upon request. 适用范围 Applications 本产品适用于工频额定电压3.6/6kv~26/35kv输配电线路作配送电能子用。 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 · 工频额定电压U0/U为3.6/6kv~26/35kv。 Rated power-frepuency voltage U0/U: 3.6/6kv~26/35kv. · 电缆导体的zui高允许工作温度:90℃。 Max.admissible operating temperature of the conductor:90℃. · 短路时(zui长时间不超过5s)电缆导体的zui高温度不超过2500C。 Max. short-circurt temperature of conductor shall not exceed 2500C. (5s maximum duration) · 电缆敷设时环境温度应不低于00C。 YJV2*70平方高压电缆 YJV高压电力电缆价格 The ambient temperature under installation should not below 00C. · 电缆弯曲半径:三芯电缆不小于电缆外径15倍;单芯电缆不小于电缆外径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. 电缆额定电压的选择 Voltage designation · 电缆的额定电压应适合于电缆系统的运行状况,用U0/U(Um)kv表示。 U0-电缆设计用的导体对地或金属屏蔽之间的额定工频电压; U-电缆设计用的导体间的额定工频电压; Um-设备可承受的“zui高系统电压"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. · 三相系统用电缆的U0值*如下表: The values of U0 recommened for cable to be used in three-phase systems are listed below: 高压电力电缆专业生产厂家 |
U kv | U m kv | U 0 * kv | A 和 B 类系统 System categories A and B | C 类系统 Systems categories C | 6 | 7.2 | 3.6 | 6 | 10 | 12 | 6 | 8.7 | 15 | 17.5 | 8.7 | 12 | 20 | 24 | 12 | 18 | 30 | 36 | 18 | - | 35 | 40.5 | 21 | 26 |
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A类系统──该类系统任何一相导体与地和接地导体接触时,能在1min内与系统分离 B类系统──该类系统仅包括单相接地故障短时运行的条件,接地故障时间应不超过1h, 但在任何情况下,zui长不超过8h每年接地故障总持续时间不超过125h; C类系统──不属于A类、B类的系统。 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 电缆的型号Type of cable |
型号 Type | 名称 Designation | 适用范围 Application | YJV | 铜芯交联聚乙烯绝缘氯乙烯护套电力电缆 Copper conductor,XLPE insulated and PVC sheathed power cable | 室内、隧道及电缆沟等场所,不能承受机械外力。单芯电缆不允许敷设在磁性管道中。 For laying indoors 、 intunnel or cable trench,unable to bear external mechan-icalforces.Single-core cable in magnetic duct is not permissible | YJLY | 铝芯交联聚乙烯绝缘乙烯护套电力电缆 Aluminium conductor, XLPE insulated and PVC sheathed power cable | YJY | 铜芯交联聚乙烯绝缘氯乙烯护套电力电缆 Copper conductor ,XLPE insulated and PEsheathed power cable | YJLY | 铝芯交联聚乙烯绝缘氯乙烯护套电力电缆 Alumimium conductor ,XLPE |
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导体的概念:即是能够让电流顺利通过的金属载体材料。导体必须有良好的导电性能、物理机械性能、工艺性能和防腐性能。就导电性能来说,金属依次为银、铜、金、铝、镍、钢、合金。但是由于金属银的价格昂贵,所以我们在电缆当中多采用铜丝,一般在20℃铜的电阻率为 0.0175 Ω · mm2/m。我们为了保证导体能够充分的满足电缆应有的性能,在电缆导体中我们多选择无氧铜。氧的含量不大于0.03%,杂质总含量不大于0.05%,铜的纯度大于99.95%的铜就叫无氧铜 。无氧铜无氢脆现象,导电率高,加工性能、焊接性能、耐蚀性能和低温性能都非常的良好