Category:power

Question:
supply voltage 380V. using electric voltage 220V Total power 35KW. ask how much the line by using the appropriate

Answer:
according to China’s power specifications, 380V power supply, usually three-phase power supply, with electrical voltage 220V, generally single-phase, and if so, then all the electrical appliances is divided into three-way, so that the total power of each path as close as possible, such as the can be the same as the best. according to the greatest way to calculate the total power, if it is 13KW,
this way the current = 13000/220 = 59A, this is just pure resistance circuit current, if there are electric motors and other inductive load, we must divide by the motor power factor, but also consider the starting current, to set the appropriate overload and short circuit protection circuit, and then laying under the line method (Ariake deposited, dark deposited, buried, wearing steel pipe, wearing a plastic tube, etc.) investigations, “Electrical Design Manual” .
better if an experienced electrician or electrical engineer to design. If there are difficulties, please contact, e-mail: aacsw@sina.com

Answer:
The problem is not very clear!!

Answer:
you asked what section of the cable呀

Answer:
supply voltage 380V. using electric voltage 220V Total power 35KW. then you can only use single-phase power supply load, and if you do not intend to adopt step-down transformer, then, 380v power cord inlet only In accordance with 220V load capacity calculation. calculated as follows.
350000/220 = 150A
if we adopt the BV wire for surface of 35 mm2 can be that if the transmission distance is necessary to verify thermal stability, while the zero line and shall not is less than 35 mm2. PE line of not less than 16 mm.

Answer:
35 square copper cables can be.

Chinese:电缆线径多大合适？

类别: 电力

问题:
电源电压380V.用电器的电压220V总功率35KW.请教用多大的线经合适

回答:
按我国的用电规范,380V的电源,通常是三相电源,用电器的电压220V,一般是单相的,如果是这样,那么,把所有的电器分成三路,使每一路的总功率尽量接近,如能相同则{zj0}.按{zd0}一路的总功率来计算,如果是13KW,
此路的电流=13000/220=59A,这只是纯电阻电路的电流,如果有电机等电感性负载,要除以电机的功率因素,还要考虑启动电流,要设置相应的过载和短路保护电路,再根据线路敷设方法(有明敷、暗敷、埋地、穿钢管、穿塑料管等)查《电工设计手册》。
{zh0}请有经验的电工或电气工程师进行设计。如有困难请联系，电子邮箱：aacsw@sina.com

回答:
问题不是很清楚!!

回答:
你问的是哪一段的电缆呀

回答:
电源电压380V.用电器的电压220V总功率35KW.那么您只能使用单相电源供给负载了,如果您不打算采用变压器降压的话,380v的进电源线也只能按照220V负载的容量计算.计算方法如下.
350000/220=150A
如果采用BV导线明敷35平方毫米的就可以了如果输送距离较远就要采用热稳定来校验,同时零线也不得小于35平方毫米.PE线不得小于16平方毫米.

回答:
35平方的铜电缆即可。