How to learn some simple home electrician repair knowledge

First, it is recommended to take the following ways to learn some simple household electrician and maintenance knowledge:

2. On the basis of mastering certain theories, you can try to apply these knowledge in life and accumulate experience;

3. There is also a convenient way, which is to use your spare time to follow your relatives or friends who do electrician maintenance to work in the field to see how to deal with and use electrician and maintenance knowledge to deal with problems.

Second, some common electrician, maintenance knowledge:

1. The colors of the three-phase five-wire system are yellow, green, red and light blue respectively to represent the double colors of U, V, W and N protective grounding wires;

2. During the operation of the transformer, the current of each phase of the transformer should not exceed the rated current; The maximum unbalanced current shall not exceed 25% of the rated current. After the transformer is put into operation, it should be overhauled regularly. In the system powered by the same transformer, it is not suitable to mix protective grounding and protective zero.

3. The rated voltage of the secondary coil of the voltage transformer is generally 100V. The secondary side of the voltage transformer shall not be short-circuited when working. Because a large short-circuit current will be generated in the event of a short circuit, the transformer may be burned out, so fuses are installed on the primary and secondary sides of the voltage transformer for protection.

3. One end of the secondary side of the voltage transformer must be grounded. This is to prevent the primary and secondary coil insulation breakdown, the primary high voltage into the secondary side, endangering the safety of personnel and equipment. The secondary side of the current transformer is close to a short-circuit condition when it is operating.

The rated current of the secondary coil is generally 5A The secondary side of the current transformer is never allowed to open the circuit when working, and one end of the secondary side of the current transformer must be grounded to prevent it.

When the insulation of the primary and secondary coils breaks down, the high voltage on the primary side enters the secondary side.

4. When the current transformer is connected, pay attention to it.

First, the polarity of the secondary coil, China's transformer adopts the marking method of reduced polarity. When installing, it is necessary to pay attention to the correct and reliable wiring, and the secondary side is not allowed to connect the fuse or switch. Even if for some reason the instrument or other device on the secondary side is to be removed, the secondary side must be shorted before it is removed.

5. Low-voltage switch refers to the load controlled by the disconnecting switch, circuit breaker, fuse, etc. of the low-voltage distribution device below 1kV, which must be clearly divided, and it is strictly forbidden to control and confuse one gate.

The older generation will have some, so you can ask for advice.

Learning content: 1. Familiar with electrician safety operation procedures.

2.Able to read and analyze schematic diagrams of basic circuits, and have the ability to read general electrical drawings;

3.Familiar with the use of common electrical tools and electrical instruments, familiar with the ability of common electrical materials;

4.Familiar with the basic operation process of electrician and the operation process of indoor electrical circuits;

5. Familiar with commonly used low-voltage electrical appliances and three-phase asynchronous motors.

methods of use, installation and testing;

Skill Target:

1) Able to properly handle electricity and electrical fires and other electrical non-electrical;

2) Be able to correctly use common electrical tools and instruments, and identify commonly used electrical materials;

3) Be able to connect the wires correctly, install and repair the indoor electrical lines;

4) Be able to correctly use, install and test commonly used low-voltage electrical appliances and three-phase asynchronous motors;

5) Learn to find problems, problems and solve problems, and apply professional knowledge of maintenance electricians to solve practical problems in production and life.

Professionalism Goals:

Initial dialectical thinking.

and the ability to analyze logically;

2.Establish a link between theory and practice.

Cultivate a scientific work style, have a love for science, seek truth from facts and a sense of innovation, and innovative spirit;

3.Strengthen professional ethics.

Conscious. Cultivate students' awareness of engineering quality and work norms, as well as rigorous and serious work attitude.

How to become a good maintenance electrician, to become a good maintenance electrician, you need to do the following:

1. Strong sense of responsibility and professionalism;

2. Comply with regulations, safety first;

3. Operate carefully and pay more attention;

Fourth, be good at summarizing and focusing on improvement;

5. Strengthen the foundation, think more, learn more, and practice more;

6. Strengthen confidence and pursue.

In short, to be a maintenance electrician, you have to do a line of love, and the technology is exquisite, and the efficiency is high, and it really takes a lot of effort. Usually do more hands, especially the equipment that you are often in contact with, you have to find ways to know more, and you have a good idea, and things will be easy to do. For sudden failures, use your brain more, move quickly, and pay attention to safety.

Try to memorize some common sense, you can also consult your peers if you have the opportunity, and you can steal the skills. Theory and practice should complement each other, and believe that you can do it!

Under the guidance of theory, practice repeatedly. Electricians should have the spirit of strict discipline, abide by the professional ethics of electricians, and do a good job of electricians. Faithful to professional responsibility.

Respect and abide by professional discipline. Willing to exchange electrician expertise and safe operation technology. Teamwork.

For beginners, it is necessary to learn comprehensively, focus on breakthroughs, and be multi-skilled, so that you can not only be a qualified electrician, but also an electrician on behalf of the show.

Your understanding is wrong, hands-on is the most effective way, this is the combination of theory and practice, you can take the initiative, there is a master in what are you afraid of, you work in the first steel mill?

First of all, we should be familiar with each component, such as PLC input module, output module, CPU module, power module, and their wiring characteristics. Carefully observe the master's fault finding method. Order.

After work, make a maintenance inspection record, and finally form a system circuit diagram in the brain, buy some related technical questions and answers, these books are introduced are practical experience, you have the foundation, lack of practical experience, in the diligent study and inquiry, I believe that soon you will be competent for your job!

To be a qualified electrician, I think, is a matter of mentality. Be accountable for the work you do, for the safety of others, for your own safety. And the safety of the company is responsible.

The most important thing is to be diligent in your hands and brains. In practice, we must have a sense of maintenance innovation, and constantly accept new knowledge, new theories, and new devices. Of course, work ethic is indispensable, especially in today's money society.

Rigorous, modest, arrogant, and impetuous.

The experience skills of electrician maintenance are as follows:

1. Skillfully twist the broken light bulb.

If the incandescent bulb is splashed with cold water or broken by a hard object during the lighting process, it is not advisable to twist it directly with your hands in the face of the broken glass ballast, so as not to puncture it. At this time, most electrician friends will use needle-nose pliers to twist it, not only can not remove it, but also get glass shards all over the floor, which is very annoying.

At this time, cut a suitable size of potatoes, radishes, sweet potatoes, etc. into large pieces, so that the large pieces are aimed at the broken bulb, pierce the tip of the broken glass into the potatoes and other foods, and then rotate the potatoes counterclockwise, etc., so that the bucket can be safely and easily removed from the bulb.

2. Simple method of threading steel pipes with many bends.

When threading wires into steel pipes, it is often difficult for wires to pass through because the steel pipes are bent a lot. At this time, we can find a nut that is smaller than the diameter of the steel pipe, tie the cotton rope to the upper surface, put the nut into the steel pipe, use its own weight to make it slide down in the pipe, and the position of the steel pipe should be adjusted appropriately during operation, at this time the nut will quickly slide out from the lower nozzle, at this time, the wire can be tied to the cotton rope at one end, and the wire will be slowly pulled into the steel pipe.

The importance of electrician repair skills

In any enterprise and institution, electricians are indispensable, electricians can accurately and timely judge the fault of the power system, which requires electricians to be very familiar with circuit maintenance knowledge, and can deal with the problem flexibly according to the specific situation.

In fact, the faults of the electrical system mainly include the usual maintenance and repair, the commissioning of the line is normal or not, and the installed equipment and the reasonableness of the wires in the dry sales section.

The equipment cannot be operated due to failure, which sometimes causes great economic losses and will affect the labor efficiency of the enterprise, so the skills of maintenance electricians to troubleshoot are very high. For the wide range and high randomness involved in electrical faults, the skill of troubleshooting is a major feature of the profession (type of work) of maintenance electrician, and it also puts forward higher requirements for the skills of maintenance electrician troubleshooting.