电线负荷的计算方法_2.5平方铜线

电线负荷的计算方法_2.5平方铜线 电线负荷的计算方法 低压380电机，一个千瓦2安培 额定电流=功率/(供电电压*功率因数)，如果是380V，再除以1.732，如果不知道功率因数，一般电机在0.85左右，按0.85框算 380v电机额定电流可安每千瓦2安算，按2安算功率因数是0.76 一、常用电线的载流量: 500V及以下铜芯塑料绝缘线空气中敷设，工作温度30?，长期连续100,负载下的载流量如下: 1.5平方毫米——22A 2.5平方毫米——30A 4平方毫米——39A 6平方毫米——51A 10平方毫米——74A 16平方毫米——98A 二、家用的一般是单相的，其最大能成受的功率(Pm)为:以 1.5平方毫米为例 Pm=电压U×电流I,220伏×22安,4840瓦 取安全系数为1.3，那么其长时间工作，允许的功率(P)为: P=Pm?1.3,4840?1.3=3723瓦 “1.5平方”的铜线。能承受3723瓦的负荷。 三、1.5平方毫米铜电源线的安全载流量是22A，220V的情况可以长时间承受3723W的功率，所以24小时承受 2000瓦的功率的要求是完全没有问的。 school)], 4 4 house building as well as more than 1000 copies of books, more than 10 kinds of collection of newspapers and magazines, fires burnt down. In 1938, the Japanese learned that the national Government established in XI Tang Tomb rotten "clip" taxes, tax officers live in 8 of Yan Dong village farmers home, troops at night, Yao was burned several houses. 1938 new morning of September 18, the Japanese team went to the countryside "sweep" from the kaiyang village line to Tung Yang Jia Qiao yan Temple wall and met Yang Jia溇 Zhou Dana (male) weeks because of long-term illness and can't work in the fields, the Japanese see his face from scratch without calluses, regard him as "Shina", thrust a knife at the scene of his death. The body was stabbed 7 times, wound 13. The same day, Trang bang village heard the Japanese come to "mop-up" are hiding, mother of 9 Zhou Guanbao Zhang Aying to drill a "dry mound", was discovered by the Japanese, a shot in the end. The same day, is 7 zhouhaijiangzhi grandfather Zhou Yingbao to escape the Japanese army, was found on the road, a shot in the end. In March 1939, the Japanese army in Yan Tomb raiding, has arrested 16 people, in fengqiao cigarettes this morning bang, killing 11 people on the River, East meeting point in wood qiaotu in the afternoon killing 4 people on the Riverside. Gu Tong is a Japanese go speak the Shanghai dialect, later to be called Gu Tong as "kill left." On January 18, 1943, the elves, five thousand or six thousand, water and land go hand in hand "mop-up" jiaxing area west of the railway, Yan Tomb area fall. March 6, Niu Shan (County Government II section chief) carrying its child Niu Jun (strict Tomb seventh district Chang) and the District Assistant Yu Xuchu, and players Jin Fuqin, and Shen Baosheng, six people received Wujiang underground County Government notification 一般铜导线载流量导线的安全载流量是根据所允许的线芯最高温度、冷却条件、敷设条件来确定的。 一般 铜导线的安全载流量为5~8A/mm2，铝导线的安全载流量为3~5A/mm2。 综合上述所说的，现在的电力衰减厉害，加上电力设备的质量中等化，所以安全的电力是每平米6A 电力使用每平米7A ，安全的电力使用每平米应该为6A，如果您需要计算方式应该是 1.5平米×6A=10.5A 10.5A×220W=2310W 这就是1.5单轴最大输出功率 如:1.5 mm2 bvV铜导线安全载流量的推荐值1.5×8A/mm2=12A 220V的电压的话就是功率=电压×电流= 220×12=2640瓦=2.64千瓦 应该根据负载的电流来计算功率的，1.5平方的铜芯电缆最大能承载接近25A电流的，可用于三相动力设备 (额定电压380V的2.5KW以下的电机)，可用于单相照明等(额定电压220V)设备，每相能承载2.5KW以下的单 相设备的。 在作为三相电机的接线电缆不太长(10米内)时可载荷2.5KW(10.5A)，线段过长相应载荷降低。一般按每平方 载流4,6A选取，长线取小值，短线取大值。 2根1.5平方铜芯电线穿线管理论上是3平方，实际载荷多少千瓦。在220V电压是2.64千瓦。载流量是不变的， 功率随着电压变 school)], 4 4 house building as well as more than 1000 copies of books, more than 10 kinds of collection of newspapers and magazines, fires burnt down. In 1938, the Japanese learned that the national Government established in XI Tang Tomb rotten "clip" taxes, tax officers live in 8 of Yan Dong village farmers home, troops at night, Yao was burned several houses. 1938 new morning of September 18, the Japanese team went to the countryside "sweep" from the kaiyang village line to Tung Yang Jia Qiao yan Temple wall and met Yang Jia溇 Zhou Dana (male) weeks because of long-term illness and can't work in the fields, the Japanese see his face from scratch without calluses, regard him as "Shina", thrust a knife at the scene of his death. The body was stabbed 7 times, wound 13. The same day, Trang bang village heard the Japanese come to "mop-up" are hiding, mother of 9 Zhou Guanbao Zhang Aying to drill a "dry mound", was discovered by the Japanese, a shot in the end. The same day, is 7 zhouhaijiangzhi grandfather Zhou Yingbao to escape the Japanese army, was found on the road, a shot in the end. In March 1939, the Japanese army in Yan Tomb raiding, has arrested 16 people, in fengqiao cigarettes this morning bang, killing 11 people on the River, East meeting point in wood qiaotu in the afternoon killing 4 people on the Riverside. Gu Tong is a Japanese go speak the Shanghai dialect, later to be called Gu Tong as "kill left." On January 18, 1943, the elves, five thousand or six thousand, water and land go hand in hand "mop-up" jiaxing area west of the railway, Yan Tomb area fall. March 6, Niu Shan (County Government II section chief) carrying its child Niu Jun (strict Tomb seventh district Chang) and the District Assistant Yu Xuchu, and players Jin Fuqin, and Shen Baosheng, six people received Wujiang underground County Government notification 2.5平方铜芯线的载流量在15,23A,如果是单相电最高可以带5千瓦，三相电最高可以带9千瓦。 10平方的铜心线能载荷多少千瓦,如果用在220V,明线布设允许连续负载电流为70A，相当于15.4千瓦;两线 布设在一支线管内，允许连续负载电流为60A，相当于13.2千瓦;三线布设在一支线管内，允许连续负载电流 55A,相当于12.1千瓦。 一般来说，1匹的制冷量大致力2000大卡，换算成国际单位应乘以1.162，故1匹之制冷量应力2000大卡× 1(162,2324瓦，这里的瓦(w)即表示制冷量，则1(5匹的应为2000大卡×1(5×1(162,3486(w)，以此 类推。根据此情况，则大致能判定空调的匹数和制冷量。一般情况下，2200(w)~2600(w)都可称为1匹， 4500(w)~5100(w)可称为两匹，3200(w)~3600(w)可称为1(5匹。 接1.5匹空调的最大电流为Imax=3600/220=16.4A (BV类铜线)电线的平方电根据导线的圆面积算出来。 以下是铜导线安全电流: 0.75平方MM^2,直径0.23MM，根数19,电流5A. 1.0平方MM^2 ,直径0.26MM, 根数19,电流7A. 1.5平方MM^2 ,直径0.32MM, 根数19,电流10A 2.5平方MM^2, 直径0.41MM, 根数19,电流17A 6.0平方MM^2, 直径0.64MM, 根数19,电流40A 10.平方MM^2, 直径0.52MM, 根数49,电流65A school)], 4 4 house building as well as more than 1000 copies of books, more than 10 kinds of collection of newspapers and magazines, fires burnt down. In 1938, the Japanese learned that the national Government established in XI Tang Tomb rotten "clip" taxes, tax officers live in 8 of Yan Dong village farmers home, troops at night, Yao was burned several houses. 1938 new morning of September 18, the Japanese team went to the countryside "sweep" from the kaiyang village line to Tung Yang Jia Qiao yan Temple wall and met Yang Jia溇 Zhou Dana (male) weeks because of long-term illness and can't work in the fields, the Japanese see his face from scratch without calluses, regard him as "Shina", thrust a knife at the scene of his death. The body was stabbed 7 times, wound 13. The same day, Trang bang village heard the Japanese come to "mop-up" are hiding, mother of 9 Zhou Guanbao Zhang Aying to drill a "dry mound", was discovered by the Japanese, a shot in the end. The same day, is 7 zhouhaijiangzhi grandfather Zhou Yingbao to escape the Japanese army, was found on the road, a shot in the end. In March 1939, the Japanese army in Yan Tomb raiding, has arrested 16 people, in fengqiao cigarettes this morning bang, killing 11 people on the River, East meeting point in wood qiaotu in the afternoon killing 4 people on the Riverside. Gu Tong is a Japanese go speak the Shanghai dialect, later to be called Gu Tong as "kill left." On January 18, 1943, the elves, five thousand or six thousand, water and land go hand in hand "mop-up" jiaxing area west of the railway, Yan Tomb area fall. March 6, Niu Shan (County Government II section chief) carrying its child Niu Jun (strict Tomb seventh district Chang) and the District Assistant Yu Xuchu, and players Jin Fuqin, and Shen Baosheng, six people received Wujiang underground County Government notification 铜线安全计算方法是: 2.5平方毫米铜电源线的安全载流量,,28A。 4平方毫米铜电源线的安全载流量,,,35A。 6平方毫米铜电源线的安全载流量,,,48A。 10平方毫米铜电源线的安全载流量,,,65A。 16平方毫米铜电源线的安全载流量,,,91A。 25平方毫米铜电源线的安全载流量,,,120A。 如果是铝线，线径要取铜线的1.5-2倍。 如果铜线电流小于28A，按每平方毫米10A来取肯定安全。 如果铜线电流大于120A，按每平方毫米5A来取。 导线的截面积所能正常通过的电流可根据其所需要导通的电流总数进行选择，一般可按照如下顺口溜进行确定: 十下五,百上二,二五三五四三界,柒拾玖五两倍半,铜线升级算. 意思就是10平方以下的铝线,平方毫米数乘以5就可以了,要是铜线呢,就升一个档,比如2.5平方的铜线,就按4平 方计算.一百以上的都是截面积乘以2,二十五平方以下的乘以4,三十五平方以上的乘以3,柒拾和九五平方都乘 以2.5. 电线的电流容量。 电线的载流率跟许多条件有关，如材质、电线种类、使用条件、连接等，因此最大值很难说的确切，但一 般可以按下列公式计算:平方数×8=电流数 ，功率则为 220×平方数×8 ，这种计算方式是有足够裕度的，不 school)], 4 4 house building as well as more than 1000 copies of books, more than 10 kinds of collection of newspapers and magazines, fires burnt down. In 1938, the Japanese learned that the national Government established in XI Tang Tomb rotten "clip" taxes, tax officers live in 8 of Yan Dong village farmers home, troops at night, Yao was burned several houses. 1938 new morning of September 18, the Japanese team went to the countryside "sweep" from the kaiyang village line to Tung Yang Jia Qiao yan Temple wall and met Yang Jia溇 Zhou Dana (male) weeks because of long-term illness and can't work in the fields, the Japanese see his face from scratch without calluses, regard him as "Shina", thrust a knife at the scene of his death. The body was stabbed 7 times, wound 13. The same day, Trang bang village heard the Japanese come to "mop-up" are hiding, mother of 9 Zhou Guanbao Zhang Aying to drill a "dry mound", was discovered by the Japanese, a shot in the end. The same day, is 7 zhouhaijiangzhi grandfather Zhou Yingbao to escape the Japanese army, was found on the road, a shot in the end. In March 1939, the Japanese army in Yan Tomb raiding, has arrested 16 people, in fengqiao cigarettes this morning bang, killing 11 people on the River, East meeting point in wood qiaotu in the afternoon killing 4 people on the Riverside. Gu Tong is a Japanese go speak the Shanghai dialect, later to be called Gu Tong as "kill left." On January 18, 1943, the elves, five thousand or six thousand, water and land go hand in hand "mop-up" jiaxing area west of the railway, Yan Tomb area fall. March 6, Niu Shan (County Government II section chief) carrying its child Niu Jun (strict Tomb seventh district Chang) and the District Assistant Yu Xuchu, and players Jin Fuqin, and Shen Baosheng, six people received Wujiang underground County Government notification 用担心不够.比如说:2.5平方的电线，承载功率为220×2.5×8=4400W， 在进行电路改造时，业主应根据实际用 电情况(用电器功率大小，串联电器多少、电线强度)并参照此进行考虑 1平方电线的额定电流约为5A，1.5平方电线的额定电流约为10A，2.5平方电线的额定电流约为15A，4平方 电线的额定电流约为20A，6平方电线的额定电流约为30A，10平方电线的额定电流约为60A. 电缆皮上一般有标注，根据功率和电压、电流的关系可以简单的推得.. 你这也太大了吧，我一般都按这样来计算的，你参考一下: 1、10下5,100上2 即:2.5,4,6,10每平方毫米导线安全载流量按5A计算。120,150,185以每平方2A计算。 2、25,35 四三界 即:16,25每平方按4A计算 35,50按3A计算。 3、70,95 两倍半。 4、穿管高温八九折 即:穿管8折，高温9折，既穿管又高温按0.72折计算 5、裸线加一半 即:按绝缘导线的1.5倍计算。 6、铜线升级算 即:铜线的安全载流量是按上一级铝线的安全载流量计算的如:6平方的铜线可按10平方的铝线计算。 7、三相四线线制中零线的截面积，通常选为相线的一半左右，在单相线路中，由于零线和相线所通过的负荷电流 相同，因此零线截面积应与相线截面积相同。 8、对于电缆口诀中没有介绍，一般直埋地的高压电缆，大体上可直接采用上述口诀的有关倍数计算。 school)], 4 4 house building as well as more than 1000 copies of books, more than 10 kinds of collection of newspapers and magazines, fires burnt down. In 1938, the Japanese learned that the national Government established in XI Tang Tomb rotten "clip" taxes, tax officers live in 8 of Yan Dong village farmers home, troops at night, Yao was burned several houses. 1938 new morning of September 18, the Japanese team went to the countryside "sweep" from the kaiyang village line to Tung Yang Jia Qiao yan Temple wall and met Yang Jia溇 Zhou Dana (male) weeks because of long-term illness and can't work in the fields, the Japanese see his face from scratch without calluses, regard him as "Shina", thrust a knife at the scene of his death. The body was stabbed 7 times, wound 13. The same day, Trang bang village heard the Japanese come to "mop-up" are hiding, mother of 9 Zhou Guanbao Zhang Aying to drill a "dry mound", was discovered by the Japanese, a shot in the end. The same day, is 7 zhouhaijiangzhi grandfather Zhou Yingbao to escape the Japanese army, was found on the road, a shot in the end. In March 1939, the Japanese army in Yan Tomb raiding, has arrested 16 people, in fengqiao cigarettes this morning bang, killing 11 people on the River, East meeting point in wood qiaotu in the afternoon killing 4 people on the Riverside. Gu Tong is a Japanese go speak the Shanghai dialect, later to be called Gu Tong as "kill left." On January 18, 1943, the elves, five thousand or six thousand, water and land go hand in hand "mop-up" jiaxing area west of the railway, Yan Tomb area fall. March 6, Niu Shan (County Government II section chief) carrying its child Niu Jun (strict Tomb seventh district Chang) and the District Assistant Yu Xuchu, and players Jin Fuqin, and Shen Baosheng, six people received Wujiang underground County Government notification