Experience in Maintenance of electrician training

For maintenance electricians, it generally refers to those who are engaged in the installation, debugging, maintenance and repair of mechanical equipment and electrical system circuits and devices. Do you know how to write the experience of repairing electrician training? The following is the model essay I brought to you for your reference. Let's have a look!

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Experience of electrician training maintenance:

Through this electrician training, I have gained a lot, which I can't learn in classroom theory study. My main gains are as follows:

1. Mastered the use of several basic electrical tools, the connection method between wires and the connection method between wires and terminals, and learned the basic knowledge of wiring and component layout in circuit installation;

2. Understand the concepts and principles of motor drive and inching control, sequence control and reverse control, and master the principle and wiring method of AC relay;

3. This time, the team spirit has been strengthened, and the practical ability and serious and rigorous style have been cultivated.

In this trip to electrician training, it was ok on the whole, not too difficult. But there are also many problems in the process of training. Details are as follows:

1. Oscilloscope: During the oscilloscope measurement, it was found that there was no waveform, so the test could not be carried out. Solution: It is possible that the line of the first channel is mistakenly connected to the interface of the second channel, so it cannot be displayed. Just change the connection mode of the connection channel.

2. Wiring: There is no power supply after wiring, which may be a wiring problem. Solution: First, check the connection of the line to see if it is wrong or missed. If it is not a problem, use a multimeter to test the relevant components. If there is no power supply, electrical components may be damaged and need to be replaced with new components.

3. Troubleshooting: In the troubleshooting vertical cabinet, the line number of the machine tool is different from the drawing, so it is difficult to find the fault. Solution: when troubleshooting, troubleshoot according to the principle of actual circuit diagram, not according to the number of lines in the drawing, so troubleshooting can be relaxed. Moreover, our key is to find a solution, rather than rote learning, which is unrealistic.

Experience in maintaining electrician training II:

Through practice, I have gained practical production knowledge and installation skills, mastered the working principle of relay control circuit and its components, electrical technology knowledge, and mastered the basic principles and methods of electronic circuits. Master the installation and debugging technology through the circuit diagram. Through the specific circuit diagram, we can master the assembly of simple circuit components, preliminary welding process and fault diagnosis and elimination. Cultivate students' ability to integrate theory with practice, improve their ability to analyze and solve problems, enhance their ability to work independently, and cultivate students' unity and cooperation. * * * has discussions and * * * has progress.

At the same time, electrician training is an important practical teaching link in vocational education. It is of great significance and function for students to master basic theoretical knowledge, apply basic knowledge, train basic skills, enhance practical ability and meet the requirements of vocational education training objectives. For our graduating students, internship is of greater significance. It is the link and bridge for us to move from school to social work, and it is the training and test for us to change from student role to worker role. In the future employment, practical ability, practical experience and so on are very important. Make students have a certain perceptual and rational understanding of electrical components and electrical technology, and further understand the professional knowledge of electrical technology. Details are as follows:

1. Be familiar with the categories, models, specifications, performance and application scope of common electrical components.

2. Be able to correctly identify and select common electrical components and skillfully use digital multimeter.

3. Understand the connection, debugging and maintenance methods of electrical components.

4. Basically master the circuit connection method, and be able to independently complete the connection of simple circuits.

5. Be familiar with the steps, methods and technological processes of control circuit board design, and be able to design and manufacture the control circuit board according to the circuit schematic diagram and the physical objects of electrical components.

6. Familiar with the use of common hand tools and their maintenance and repair.

Second, the motor wiring training

(A) two-speed motor speed regulation

First, close the air switch QF to introduce the three-phase power supply. When the start button SB2 is pressed, the coil loop of the AC contactor KM 1 is electrified and self-locked, and the main contact of KM 1 is closed, thus introducing a three-phase power supply for the motor, and the motor runs in a triangle connection mode. Then press the SB3 button, at the same time, the KA coil and KT coil are energized, the KA normally open contact moves to realize self-locking, the KT normally open contact closes, the coil KM 1 remains energized, and the motor still runs in a triangle connection mode. After a period of time, the normally closed contacts of KT disconnect contactors KM 1, and the main contacts of KM 1 disconnect contactors U 1 and V6. KT contact moves, at the same time, the coil loop of contactor KM3 is electrified and self-locked, and the KM2 coil is electrified and self-locked. The main contact of KM3 is closed, and the three-phase power supplies L 1, L2 and L3 are introduced into U2, V2 and W2. At this time, the motor runs under YY connection, and the speed is twice as high as the original.

Speed regulation wiring flow of two-speed motor

Connection of low-speed winding and connection of high-speed winding

Two-speed motor belongs to pole-changing speed regulation of asynchronous motor. By changing the connection mode of stator winding, the number of magnetic poles of stator rotating magnetic field is changed, thus changing the speed of motor. As shown in the figure, firstly, the three first ends of the stator winding, U 1, V 1 and W 1, are respectively connected to the three-phase L 1, L2, L3, U2, V2 and W2 of the power line and suspended. In the second stage, the three first ends of the stator winding, U 1, V 1 and W 1, are connected together, while U2, V2 and W2 are connected to L3, L2 and L 1 of the power line respectively, which is equivalent to reducing the pole number by half.

(2) Motor energy consumption braking

Wiring process of motor energy consumption braking

Braking process: When SB 1 is pressed, KM3, KM 1 and KM2 all lose power, the normally closed contact of KM 1 is closed, KM4 is energized, the main circuit contact is turned on, and the rotor coil is directly short-circuited, so that the rotor winding with energy is released by aftercurrent, and finally the motor stops. In the stage of energy consumption braking, KM4 normally open contact is closed, so that the rotor and the two ends led out by the rectifier bridge are directly short-circuited, and the energy consumption path is realized. When the stop button of the energy consumption braking circuit is operated, press the stop button SB2, and KM 1 will be powered off and released. At the same time, the normally open contact of SB2 will be closed, so that KM2 and KT will be electrified, and the DC rectified by the bridge will be connected to the stator winding of the motor to start braking. When the set time is reached, the normally closed contact of KT delayed disconnection is disconnected, and the power loss of KM2 is released, thus ending the braking process.

Three, machine tool circuit troubleshooting training

(1) milling machine

The troubleshooting methods can be "one-by-one troubleshooting method" and "subsection troubleshooting method", which is used to troubleshoot multiple circuits, while "subsection troubleshooting method" is applied to one circuit. Specific measurement: disconnect the power supply first, and measure with a multimeter. You can first measure the fuse to the male of each coil and the other end of the coil to determine whether the coil and the circuit are normal, and then use another fuse to measure point by point. According to the principle of the circuit, check the action of each element by energizing, and check the current source of the high-point main line, and perform the step of energizing each inspection place until the circuit works normally. Use multimeter to measure whether the coils of contactors KM 1 and KM2 are open or short. If there is an open circuit or short circuit in the coil, replace the coil or contactor. If the coil is normal, check the contactor action mechanism. If it is stuck, replace the contactor.

(2) Drilling machine

Use a multimeter to check whether the cross switch SA 1 has electric shock. If the line is disconnected, it means a short circuit. Turn on the travel switch SQ 1 or SQ3, and touch the contact handle manually when the power is off. If the contact does not move after contact, the travel switch is damaged. Use multimeter to measure whether the coils of contactors KM2 and KM3 are open or short. If there is an open circuit or short circuit in the coil, replace the coil or contactor. If the coil is normal, check the contactor action mechanism, and if it is stuck, replace the contactor; Disconnect the power supply and measure the interlocking contacts of two contactors (KM2 and KM3) with a multimeter. If any contactor can't be closed, check whether the contactor has poor reset or the mechanism is stuck, and deal with it accordingly or connect the interlocking points of KM2 or KM3 with a group of similar interlocking points. According to the principle of the circuit, check the action of each element by energizing, and check the current source of the high-point main line, and perform the step of energizing each inspection place until the circuit works normally.

When the power supply is disconnected, measure whether the coils of contactors KM4 and KM5 are open or turn-to-turn short. If the coil is blocked or damaged, replace it or replace the whole contactor. If the coil is normal, it is necessary to open the arc extinguishing cover of contactor KM4 or KM5, check the operating mechanism and main contact, and replace the main contact or the whole contactor if it is damaged; Use multimeter resistance to measure whether the auxiliary interlocking point of contactor KM4 or KM5 is reliably closed. If one of them is not closed well, the other set of interlocking closing points of the contactors are connected in parallel. Measure the lower contacts of fuses FU 1 and FU2 with a low-voltage test pen, check the blown fuse, and replace the fuse of the same model. If the contact is poor, reprocess the line and press the contact. Use a multimeter to test whether the switch SA 1 can be reliably closed after being operated with the power off; If not, it should be replaced; After disconnecting the power supply, use a multimeter to test whether the SB 1 or SB2 button can be reliably closed after being pressed. If you can't connect, please replace the button.

Experience in maintaining electrician training 3:

When I came to school, I started another week of electrician practice, and I was full of curiosity about the practice. We must install a radio. In the past, this was a very impossible task. However, we must finish this task this week.

When I heard this internship notice, I felt completely at a loss. I thought all the parts in it should be pasted, but when the teacher gave us a lecture, we immediately understood that there was a circuit diagram with everything on it, so just connect the corresponding parts one by one according to the drawings. So it's such a simple thing. Just when we were happy, when we brought the props, we didn't know where to start. Each part feels the same, but its function is quite different. If we really put it wrong, it's over. After feeling the pressure, we first learn the circuit diagram, but we can't understand it. After despair, we had to bite the bullet and go on. Take out a part and have a look at it first, and find that it is the same as the target on the picture. With this awareness, it will be much easier. We put one part on the circuit diagram and put it on one by one. See how happy we are when a part is mounted on a circuit board. Look at other students, some have not started yet, and some are welding with electric welding. Our next job was welding, so we went to learn from the scriptures and watched their hands shaking there, and everyone laughed. It turns out that this is still a technical job. Under the guidance of the teacher, everyone became proficient, learned to weld, and learned another trick. This is a very practical technology. It used to be fun to watch others weld. It's not so fun when you really get up. Seeing that all shapes, big and small, are welded by us, everyone says that they can still do this business if they can't find a job in the future, but who dares to give us our technology? So we strive for this opportunity to practice well. Although the welding is not very beautiful, it is at least the result of our labor, which can't help but make people deeply moved. It didn't take long for the whole group to unite and cooperate, and finally we welded those small parts. Finally, the most difficult to weld is the one with many feet, which really worries us. We've been welding there, and we haven't seen the effect, and we've made all kinds of jokes. The temperature of the electric plates is very high, so we will burn them. Continue welding after blowing, because everyone has a belief in his heart, that is, let him speak quickly, and then the time can be controlled by himself. Finally, the experience was finally discovered. We raised the welding temperature and then brushed it all the time. Finally, at the moment when all were separated, everyone was boiling. We finally succeeded. With this motivation, we don't even want to eat rice. It seems that this radio is still very attractive. Some students even brought rice to the laboratory. Really can't sleep. Everyone didn't take a lunch break, continued to struggle, connected the wires and put on the shells according to the circuit diagram, and the moment of expecting people's hearts came like this. There is no sound when loading the battery. We are not overwhelmed by this fact. We checked the wiring and found that it was wrong. After we changed it, it was really great. It doesn't sound beautiful, but at that moment, it was the most beautiful voice in the world. All the other students gathered around.

When I came here, the classroom was boiling and the main force in the group began to teach technology. Before long, the second stop and the third stop all made noises. We finished the week's task in less than one day. We are so strong that we can't even resist ourselves. Everyone breathed a sigh of relief when it was finished.

Although the internship was short, it did give us a lot of things that we couldn't learn in textbooks. Exercise our hands-on ability, but also exercise our team spirit. This internship has painted a beautiful picture of our college life. Looking back many years later, when it comes to radios, we can proudly say that we all installed our own radios!

Experience in maintaining electrician training 4:

In this trip to electrician training, it was ok on the whole, not too difficult. But there are also many problems in the process of training. Details are as follows:

1. Oscilloscope: During the oscilloscope measurement, it was found that there was no waveform, so the test could not be carried out. Solution: It is possible that the line of the first channel is mistakenly connected to the interface of the second channel, so it cannot be displayed. Just change the connection mode of the connection channel.

2. Wiring: There is no power supply after wiring, which may be a wiring problem. Solution: First, check the connection of the line to see if it is wrong or missed. If it is not a problem, use a multimeter to test the relevant components. If there is no power supply, electrical components may be damaged and need to be replaced with new components.

3. Troubleshooting: In the troubleshooting vertical cabinet, the line number of the machine tool is different from the drawing, so it is difficult to find the fault. Solution: when troubleshooting, troubleshoot according to the principle of actual circuit diagram, not according to the number of lines in the drawing, so troubleshooting can be relaxed. Moreover, our key is to find a solution, rather than rote learning, which is unrealistic.

Time is like running water, it always flows quietly without knowing it, and it will enter a new year in a blink of an eye. Looking back on 20 15, although busy, I feel very fulfilled. Over the past year, ideological study, personal professional quality and management level have made great gains and progress. The work of the past year is summarized as follows:

First, the ideological aspect.

Carry out the Party's principles and policies in the new period, strengthen the cultivation of political theory, constantly enrich one's political theory level, have a firm political stand, firm ideals and beliefs, attach importance to the overall situation, consciously safeguard unity, pay attention to research, respect facts, pay attention to correcting one's words and deeds with the standards of leading cadres, and guide peacetime work with the theoretical level.

Second, the mechanical and electrical management

1, strengthen the management and maintenance of mechanical and electrical equipment, give full play to the advantages and efficiency of mechanical equipment, reduce mechanical and electrical accidents and improve the management, maintenance and repair operation level of all mechanical and electrical personnel. Strengthen and standardize equipment management and improve the posting of various signs such as cables. Standardized acceptance and electromechanical inspection are closely combined and complement each other. So as to improve the intact rate of equipment, reduce the failure rate of equipment and improve the safety factor underground.

2. Strengthen the education of safety concept. Starting from this unit, put safety in production into everyone's mind. In order to improve the safety awareness of each employee and strengthen the implementation of management measures and methods.

3, strengthen the monthly mechanical and electrical inspection, strengthen the usual investigation. Strengthening the investigation of hidden dangers of equipment at ordinary times has greatly reduced the failure rate of equipment and greatly curbed the occurrence of personal safety and health accidents.

4. Pay attention to reform and innovation. Actively cultivate employees' subjective initiative, encourage employees to make minor changes, and make the equipment more suitable for the production environment, which has achieved great results in promoting safe production and energy saving and emission reduction.

Experience in maintaining electrician training 5:

1. Have a preliminary and systematic understanding of the theory of electronic technology. We learned the welding skills of common components and circuit components, the design, production and technological process of printed circuit board diagram, the working principle of radio and the functions of components. This knowledge is not only effective in the classroom, but also of great guiding significance to the study of electronic technology courses in the future, and also has practical significance in daily life.

Second, it is a great exercise for your practical ability. Experience is the mother of wisdom. Throughout the ages, all inventions have been tested by practice. If the hands-on ability is not enough, you can talk about making achievements in future scientific research, especially experimental research. During the internship, I exercised my hands-on ability and improved my ability to solve problems. For example, when assembling and debugging the radio, several gaskets were welded together with small spacing, but the task was still completed.

Third, the internship course has taught us a lot of practical things that can't be learned in textbooks. By assembling a light-controlled alarm circuit, some circuit elements and their working principles and normal working detection can be applied in practice and extended. It not only enhances the practical ability, but also deepens our understanding and application of textbook knowledge. Really learn to discover, ask and solve problems independently, find out what the problems are in practice, and explain them with what you know, help each other with your classmates and make progress in discussion.

Learned the basic welding technology, circuit detection and debugging, electronic product assembly technology, electronic components identification and quality inspection, the whole machine assembly technology. All these have cultivated our practical ability and rigorous work style, and laid a good foundation for our future work. And this should also be very useful in the computer professional course where we study hardware in the future.

Through the training of electronics and electricity, I really learned a lot of knowledge and broadened my horizons. Through this electronic electrician training, I enhanced my hands-on operation ability. I remember when I was in high school, I helped to install a switch control circuit at home. Because the hands-on ability is not strong enough, the circuit is short-circuited. Fortunately, because the circuit was originally equipped with safety wires, there was no major safety accident. And through this electronic electrician training, I have mastered more standard circuits than fluorescent lamp circuit installation, and learned a lot. I also learned some knowledge of low-voltage electrical appliances, and learned their specifications, models and usage methods.

Through this electrician training, we have also cultivated our bold, cautious and cautious work style. Generally speaking, this internship is a very valuable experience, which makes us more exposed to practical problems in life and learn to simply investigate and deal with them, so as not to have no clue, which also plays a positive role in our future life and study. I hope there will be more practical courses like this in the future, so that practice and theory can be better combined. Students are required to master the correct use of electrocautery money to avoid accidental injury.

Generally speaking, electrician training has also cultivated our standard work style and our team spirit of unity and cooperation.

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