JFEYH高压电机引接线JFEYH电缆JFEYH电线

江苏春晨电缆有限公司生产JFEYH高压电机引接线JFEYH电缆JFEYH电线，电阻串联与并联电路计算公式
Calculation formula of resistance series and parallel circuit
电阻串联与并联电路计算公式从事电气施工或电工维修等相关工作的朋友们，是否觉得工作时间久了，实际经验见长，但是理论知识越来越淡薄了呢。在工作中做到理论和实际相结合才是上上策。总之小编是感觉到了理论知识的匮乏，希望从事相关工作的你 ...JFEYH高压电机引接线JFEYH电缆JFEYH电线
Do the friends in the series of resistors and parallel circuits calculate the working experience for a long time, such as electrical construction or electrician maintenance? It is the best policy to combine theory with practice in the work. In a word, I feel the lack of theoretical knowledge, and you want to be engaged in the related work.
2017-11-11 07:48
2017-11-11 07:48
家装走电线究竟是横平竖直好还是走*短路线？
Is it right or the shortest route?
家装走电线究竟是横平竖直好还是走*短路线？在电路改造中，我们经常能够看到两种对于电路布线的方式，第一种就是横平竖直，如下图： 这张图是北方全部换线的改法，走线的效果非常好看，如果这种走线方式，带客户去看，恐怕没有客户会说不正规的！接下来再给大 ...JFEYH高压电机引接线JFEYH电缆JFEYH电线
Is it right or the shortest route? In the circuit transformation, we can often see two for circuit wiring, the first one is vertical and horizontal, as shown below: this map is modified by all the line, walk the line of the effect is very good, if this line, to see with the customer, the customer will not say no regular! Next to the big...
2017-11-10 19:52
2017-11-10 19:52
单控开关和双控开关及三控开关怎么接线?有哪些区别?非常值得收藏
What are the differences between the single switch and the double control switch and the three control switch? What's the difference? It's very worth collecting.
单控开关和双控开关及三控开关怎么接线?有哪些区别?非常值得收藏单控开关在家庭电路中是*常见的，也就是一个开关控制一件或多件电器，根据所联电器的数量又可以分为单控单联、单控双联、单控三联、单控四联等多种形式。如：厨房使用单控单联的开关，一个开关控制一组照明灯光；在 ...
Single control switch and double control switch and three control switch wiring how? What is the difference? Very worthy collection of single control switch is the most common in the home circuit, is a switch control of one or more pieces of electrical appliances, according to the associated number can be divided into single control single, single double contact, single control, single control triple quadruple etc.. For example, the kitchen uses a single - control switch and a switch to control a set of lighting lights.
2017-11-10 08:03
2017-11-10 08:03
电工证与电工操作证的区别
The difference between electrician certificate and electrician's operation certificate
电工证与电工操作证的区别电工操作证也称电工上岗证，电工特种作业操作证，即特种作业人员操作证(电工)，从事电气设备安装、维修等工作必须持有的证件，是经过国家安全生产相关培训和注册的证明。现由国家安全生产监督管理总局颁发，由各地安 ...
Electrician certificate and certificate of electrician operation certificate or difference electrician certificate, special operations electrician certificate, namely special operation license (electrician), engaged in electrical equipment installation, maintenance and other work must hold a certificate, is proved by the national production safety related training and registration. It is issued by the State Administration of safety and production supervision and administration by the State Administration of safety and management.
2017-11-7 16:21
2017-11-7 16:21
三相五线制是什么？为什么不是四相或五相？
What is the three phase five wire system? Why is not the four or the five phase?
三相五线制是什么？为什么不是四相或五相？1.三相五线制是什么？在三相四线制制供电系统中,把零线的两个作用分开,即一根线做工作零线(N),另外用一根线专做保护零线(PE),这样的供电结线方式称为三相五线制供电方式.三相五线制包括三根相线、一根工作零线、一根 ...
What is the three phase five wire system? Why is not the four or the five phase? 1. what is the three phase and five wire system? In three-phase four wire power supply system, separate the two function of the zero line, is a line to do the work of the zero line (N), also with a line for protective zero line (PE), the power supply line is called the power supply mode of three-phase five wire three-phase five wire system. Including the three phase lines and a zero line, a piece of work...
2017-11-7 07:57
2017-11-7 07:57
零线(N)与地线(PE)的区别
The difference between the zero line (N) and the ground line (PE)
零线(N)与地线(PE)的区别1.地线对地电位为零，就近接地。2.零线的对地电位不一定为零。零线在变电所接地，和本地接地可能存在电位差。3.因为零线和火线组成电流回路，在零线断开时会存在电压，也就相当于火线。如下图所示的3中电力系统，带 ...
The difference between the zero line (N) and the ground line (PE) 1. ground line to the ground potential is zero, close to the ground. The ground potential of the 2. zero line is not necessarily zero. There may be potential difference between the zero line and the grounding of the substation and the local grounding. 3. because the zero line and the fire line form the current circuit, there will be a voltage when the zero line is broken, and it is equivalent to the fire line. As shown in the next figure, the 3 medium power system, with...
2017-11-6 17:39
2017-11-6 17:39
零线从哪里来？
Where does the zero line come from?
零线从哪里来？目前我国高压输配线路中，出于经济考虑都采用的是三相三线制。发电机端采用的是三角形接法，没有N线，到用户变压器（380v）后，由于考虑到220V这一电压等级。通常采用变压器二次侧星型接法。在变压器中性点接地引出N ...
Where does the zero line come from? At present, in the high voltage transmission and distribution lines in China, the three phase three wire system is used for economic consideration. The generator end uses a triangular connection, without a N line, and after the user transformer (380V), the voltage level of the 220V is considered. The two side star type connection of the transformer is usually adopted. The grounding of the neutral point of the transformer leads to the N...
2017-11-6 17:38
2017-11-6 17:38
PLC控制电路设计中常用的电气符号和文字符号
The common symbols and characters in the design of PLC control circuit
PLC控制电路设计中常用的电气符号和文字符号80年代中期,原国家标准局首次发布了一批电气制图和电气图形符号国家标准,包括GB 4728《电气图用图形符号》13项、GB 6988《电气制图》7项、GB 5465《电气设备用图形符号》2项及GB 5094《电气技术中的项目代号》等。这 ...
Electrical symbols and symbols commonly used in the middle of 80s PLC control circuit design, the National Bureau of standards for the first time released a number of electrical drawings and electrical symbols of national standards, including GB 4728 "electrical diagram graphic symbols for" 13, 6988 "GB electrical drawing" 7, "GB 5465" graphical symbols for electrical equipment the 2 and 5094 GB "electrical technology in the project code" etc.. This...