As a public power grid, the power supply system is connected to thousands of various loads, including some large inductive, capacitive, switching power supplies and other loads. These loads not only obtain power from the power grid, but also affect the power grid itself, causing distortion of the mains voltage waveform or frequency drift, making the power grid worse and lowering the power supply quality of the power grid.In addition, natural accidents and man-made accidents, such as excessive load voltage, open circuit or short circuit of power transmission and transformation system, earthquake, and lightning strike, will endanger the normal supply of electricity, thereby affecting the normal operation of the load. At this time, it is necessary to use a voltage stabilizer to maintain the stability of the output voltage.Almost all medical equipment needs to be powered by electricity. In addition to medical equipment related to the technology and performance of the machine itself, the normal supply of electricity is also crucial. The normal use of medical equipment is related to the life of the patient, and a slight mistake can cause irreversible results.The stability and reliability of power supply are related to the lifeblood of patients. Advanced equipment also poses challenges to power supply. During the use of medical equipment, problems such as inability to work under DC/AC, electrical failure, inability to start, and output may occur. Alarm failure, leakage, burns, button failure and other phenomena caused by equipment also occur frequently. Therefore, in this case, a special voltage stabilizer for medical equipment is usually used to maintain the stability of the output voltage. However, as long as it is a voltage stabilizer, it can be regarded as a special voltage stabilizer for medical equipment, but a voltage stabilizer that meets the requirements of medical equipment is a high-quality voltage stabilizer in the voltage stabilizer.For medical-specific voltage stabilizers, the following requirements and conditions must be met and guaranteed:1. The voltage stabilizer for medical equipment must be high-precision first, and the higher the voltage stabilization accuracy, the more stable the operation of the stable medical equipment.2. The voltage stabilizer for medical equipment must also meet the maintenance-free and mechanical operation voltage stabilizer, because if the voltage stabilizer has a mechanical failure when the medical equipment is working, we all know that mechanical failure will occur only in the equipment with mechanical action (such as carbon The brush type voltage stabilizer is a mechanical operation voltage stabilizer, also called a contact voltage stabilizer).3. The voltage stabilizer for medical equipment must also meet the three-phase sub-adjustment function: this phase is not a more sexual requirement, but is only considered from the hospital space and cost. The voltage stabilizer with three-phase sub-adjustment function can be mixed with three-phase equipment and single-phase equipment at the same time. It is not necessary to separate the three-phase electrical equipment from the single-phase electrical equipment and separately purchase the voltage stabilizer for single-phase medical equipment and three-phase medical equipment. Equipment-specific voltage stabilizer.4. The anti-interference ability is also a rigid requirement of the voltage stabilizer for medical special equipment.5. Protection functions such as overvoltage, undervoltage, short circuit, phase loss and automatic bypass are also indispensable conditions for medical equipment.What kind of voltage stabilizer is a dedicated voltage stabilizer for medical equipment?  1. In terms of speed, the voltage stabilizer for medical equipment must meet the above conditions.  2. The voltage stabilizer that meets the above conditions must be a non-contact voltage stabilizer. The contactless voltage regulator has the characteristics of fast voltage stabilization, high voltage stabilization accuracy, three-phase sub-adjustment, anti-interference, and multiple protection functions. In the voltage stabilization work, there is no mechanical operation and maintenance-free features.

For production and commercial users, some equipment requires three-phase power, while some equipment requires single-phase power. If we need to buy a voltage stabilizer, do we need to buy a 3-phase voltage stabilizer and a single-phase voltage stabilizer? What about phase regulators?In fact, if we are buying a voltage stabilizer, if we are buying a 3 phase voltage stabilizer and a single-phase voltage stabilizer, if we buy one separately, it will undoubtedly cause unnecessary waste of cost, which is a huge waste for users. cause unnecessary waste.When we have single-phase or three-phase electrical equipment, how do we choose a voltage stabilizer and whether we need to buy a voltage stabilizer for each. When we choose a voltage stabilizer, we only need to see whether the voltage stabilizer can be connected to single-phase electrical equipment and three-phase electrical equipment. Among them, it mainly depends on whether the voltage stabilizer supports three-phase sub-adjustment.At present, 3 phase voltage stabilizer can be divided into three-phase three-wire voltage stabilizer and three-phase four-wire voltage stabilizer, and we connect single-phase voltage stabilizer on the basis of 3 phase voltage stabilizer, we need to choose Gute power three-phase four-wire voltage stabilizer Line regulator, when connecting to single-phase, we need to connect one end to the live wire of the output end of the voltage stabilizer, and one end to the neutral line of the output end of the voltage stabilizer.

3 phase voltage stabilizer is a large-scale voltage auxiliary power supply developed and produced for 380V industrial electricity. Generally, the three-phase voltage stabilizer is at least 10KVA to thousands of KVA. Among them, the 3 phase voltage stabilizer, the line access is all three-phase electricity, and it is not a three-phase live wire and a neutral wire.The 3 phase voltage stabilizer is generally connected to large-scale industrial production equipment, and the conventional wiring method of this type of electrical equipment is: three live wires, one neutral wire and ground wire, a total of five line inputs, and for some special equipment , the input may have three live wires and one ground wire, or even only three live wires.For household appliances, it is generally single-phase input, and the general line is divided into: a live wire, a neutral wire, and for a slightly larger power appliance, each with a live wire, a neutral wire and a ground wire. The household voltage is 220V, so when choosing a voltage stabilizer, if it is a household voltage stabilizer, we choose a single-phase voltage stabilizer. The difference between a single-phase voltage stabilizer and a 3-phase voltage stabilizer is that the voltage output and input of the single-phase voltage stabilizer are connected to a live wire and a neutral wire.Summary: The 3 phase voltage stabilizer is an industrial 380V voltage stabilizer, while the household voltage stabilizer is 220V, so the 3 phase voltage stabilizer cannot be used for home use.

Voltage stabilizer can be divided into industrial voltage stabilizer and household voltage stabilizer according to its purpose; according to voltage, it can be divided into three-phase voltage stabilizer and single-phase voltage stabilizer. With the development of science and technology, power companies continue to increase funds, improve and upgrade electrical equipment, and the electricity environment has gradually become stable and safe. So is it necessary to continue to use the home voltage stabilizer?Generally speaking, household voltage stabilizers are mainly light and small, and are mainly wall-mounted to save space. Many users will consider a household voltage stabilizer to be placed at home. Here, we will explain whether it is necessary to use a voltage stabilizer in the home, and under what circumstances the home uses a voltage stabilizer.1. The role of voltage stabilizerA voltage stabilizer is a device that converts the fluctuating voltage, that is, the voltage that is high and low, to achieve a stable voltage for the load to use. So from the above situation, the main function of voltage stabilizer is voltage stabilizer.2. Under what circumstances does the family use the voltage stabilizerFor the use of voltage stabilizer, if we are under normal circumstances, the voltage at home is high and low, and some electrical equipment cannot operate normally, lighting equipment is flickering, the air conditioner is turned on, and the external unit makes abnormal noise. Most of the reasons for this are because caused by low voltage. So in these cases, we take a multimeter to measure, if the voltage is lower than 220V, the voltage is too low. When the voltage is 200V, it exceeds the acceptable voltage range of most of our electrical equipment. At this time, you need to choose a voltage stabilizer.3. Is it necessary to use a voltage stabilizer in the family?If the voltage is normal and all the equipment in the family can work normally, we do not need to use a voltage stabilizer. If the voltage at home is often abnormal, it is necessary to choose a high-quality voltage stabilizer. When choosing a voltage stabilizer, I do not Covet cheap. Based on the quality, it is necessary to choose a voltage stabilizer suitable for your home environment.

The invention of electricity can be said to be a milestone in the history of human beings, and the only way we can solve the voltage instability is the voltage stabilizer. If electricity is the track that drives people's development, then the voltage stabilizer is the driving force of development. It can be said that the voltage stabilizer is a great invention after the relay. Although the role of electricity in people's lives can be described as vital. If the voltage is unstable, it will directly affect people's production and life.With the development of science and technology, voltage stabilizers are also being updated, and many more professional types have appeared due to different use occasions. At present, the non-contact voltage stabilizer can be said to occupy most of the voltage stabilizer industry, and it has still dominated the market for many years after its launch. It has also been widely used in the market. Here, I will introduce the characteristics and key points of the non-contact voltage stabilizer. Features of contactless voltage stabilizer:First of all, when the input voltage of the mains is at the rated voltage of the voltage stabilizer, in the normal working state of the non-contact processing, the input voltage and the output voltage are the same, but there will be about one second after the machine is turned on. Corresponding compensation function, which also makes the electrical appliance burn out easily. If you enter the next boot, if the voltage of the last time is too high, it can continue to this time a little bit, and it is easy to be dangerous. If the voltage of the last time is too low, the electrical appliance cannot work normally. However, the contactless voltage stabilizer can control the voltage very well, so that the voltage of the previous time does not continue the next time, which is a great technological progress.Three-phase sub-adjustment means that the voltage of each phase must work independently without affecting each other, which greatly improves the accuracy of voltage stabilization, and can improve the voltage stabilization accuracy by 100 times compared with ordinary voltage stabilizers. one part. In addition, each phase of the non-contact voltage stabilizer can independently output a stable voltage value according to its needs, and when the output voltage value of each phase is the same, the voltage of the three phases will not appear unbalanced. Phenomenon, the highest value will not exceed one percent.No distortion is another feature of the contactless voltage stabilizer. In the process of current switching, the technology of the non-contact voltage stabilizer can achieve that no current passes through at all, so that the waveform of the current will not be distorted, and the isolation compensation transformer will isolate the main circuit and other circuits, and there will be no The appearance of wave peaks and wave troughs keeps electrical appliances in normal and standard radio wave work. Another feature is the small size, which is easy to be ignored but crucial. Of course, the small size alone cannot reflect much value. The most important thing is the high efficiency and the pollution-free environment. Small size and easy to transportThe work efficiency can reach more than 90% satisfactory, and the characteristics of environmental protection are a key word advocated in today's society, so the product of Shenzhen Goode is worth using.The key points of the contactless voltage stabilizer:1.Smart meter, this system displays many parameters, which can accurately convey the voltage, current, power and other figures through the pointer on the meter. By viewing these parameters, it is easy to judge whether the voltage stabilizer is working normally, that is, it can be It can be seen whether the current is working normally, which increases the safety of electrical appliances.2. High-speed response, the non-contact voltage stabilizer can accept a wide range of voltages. For normal electricity use, if the voltage jumps up and down tens of volts unstable due to some reasons, the general voltage stabilizer cannot be controlled. It must be It will burn out, and it will stop working in an instant, which will affect the smooth progress of many things, but the non-contact can still be adjusted to the normal range even when the voltage fluctuates greatly and frequently. It works normally, which is a very important feature of non-contact.3. Regarding overload capacity. We often see that due to the increase in business volume, many factories have to put many electrical instruments together to work at the same time, which brings a great burden to the voltage stabilizer, but this is also the time to test the voltage stabilizer, the general voltage The stabilizer will definitely collapse due to the burden of overloading, but the non-contact voltage stabilizer produced by Shenzhen Goode can bear a lot of pressure and work normally because of its high-tech technology. At the same time, the change of voltage can be adjusted, so that the amount of voltage is always within the normal range.

The ups power supply can be used with a router, but it should be noted that the voltage of the router is consistent with the voltage of the ups power supply. If you already have an ups power supply in use, you do not know whether it can be used or not. It is recommended to consult the manufacturer, explain which product and other detailed information to understand .Can UPS power supply bring router?1. It can be used, and because it has a voltage stabilization effect, it is better for places where the power supply is unstable. Connect the input terminal of the UPS to the power supply, and the power supply of the router to the output terminal of the UPS.2. The UPS power supply uses the inverter to turn the unstable power supply into a stable power supply, which can protect the computer and other equipment. If the UPS has batteries, it can also power the router in the event of a power outage, which is also what many people want.Uninterruptible power supply, that is, uninterruptible power supply, is a power supply system device that converts the DC voltage of the battery into commercial power through an inverter device. It is mainly used to ensure that the electrical appliance always has a commercial power supply regardless of whether there is commercial power.Because the output power of the UPS is much greater than the input power required by the network router, there is no problem using the UPS to power the network router.Ups power band routers need to pay attention:1. In principle, it can be used, but it must be used in accordance with the voltage of the router.2. In addition to the output voltage of the uninterruptible power supply, pay attention to the power supply. The total power of the uninterruptible power supply can meet the power of the router, so as to avoid damage to the router or damage to the uninterruptible power supply due to insufficient power consumption.How long can ups power a router?How long the UPS can only power the router is related to two necessary conditions: the power of the router and the output power of the UPS.In the case of a certain router power, the greater the output power of the UPS, the longer the power supply time.On the contrary, when the output power of the ups is unchanged, the smaller the power of the router, the longer the power supply time.For example, if the output power of the ups is 200w, the router can be powered on for 20 hours.

Whether it is a bank, hospital, government agency or school, there are computer rooms, and there will be UPS power supply in the computer room, but many users do not implement any monitoring measures for the UPS when using the UPS power supply, that is, the "streaking" state. Therefore, in order to avoid the "streaking" state of the UPS, real-time monitoring of the UPS ensures the normal operation of the UPS and the safe operation of the computer room.UPS intelligent SMS alarm is a device SMS alarm device that fully embodies the characteristics of wireless, stability, simplicity and high mobility. It can provide users with accurate, even and reliable alarm and warning information, mainly for a large number of application equipment and systems in the computer room application environment, IT application environment, and industrial application environment.For example, various network equipment and systems such as servers, routers, UPS power supplies, firewalls, application software, etc., use wireless networks to realize rapid dissemination of alarm information, directly to equipment managers and IT network maintenance personnel. Industrial monitoring, traffic management, meteorology, finance, securities and other departments.24-hour real-time monitoring of the real-time status of the UPS power supply. When monitoring abnormal conditions such as mains power failure, temperature and humidity exceeding the upper/lower limit, etc., it can take the initiative to bind the fault detailed notice to the mobile phone number through text messages and phone calls (voice). User.In the case that the user's UPS power supply supports functions such as remote control on/off, self-test, etc., the user can send SMS commands through the mobile phone to realize remote control of UPS shutdown, start-up, battery self-test and other functions, and receive UPS faults at the same time. Call the police.Summary: The above is the reason why the UPS uninterruptible power system alarm keeps ringing. The UPS uninterruptible power supply system alarm can remind the operation and maintenance personnel to deal with the problem in time, prevent accidents, and provide a cleaner and high-quality power supply function and a high-quality service power supply system.

UPS uninterruptible power supply alarm keeps ringing what is the problem? Generally, the UPS itself has an alarm function, including faults, input power interruption, etc. When the UPS power supply is abnormal, the alarm will send out a voice alarm message to notify the user of the current working status of the UPS in time. What causes the UPS uninterruptible power supply alarm to sound? In this article, the editor of Cunneng Electric will talk to you.UPS uninterruptible power supply alarm keeps ringing what is the problem?When using UPS uninterruptible power supply, different alarms will appear, and the meaning of each alarm is different. When an alarm occurs, the UPS locates the detailed cause immediately, informs the user and records it, so that the user can deal with it in time to avoid accidents.There are many reasons why the UPS power alarm keeps ringing, but basically it means that the UPS power supply is abnormal. The reasons are as follows:1. Disadvantages of UPS power systemConsider whether the UPS uninterruptible power supply system is short of power inside. If it is said that there is a power shortage inside, the alarm will automatically sound. In fact, the phenomenon of power shortage can be known by a simple inspection. Charge in time, do not let the UPS be in a state of power shortage for a long time.2. External power failureIn the process of use, if the external power supply is out of power, and the inside is in a state of power loss, the alarm will keep ringing. At this time, because there is no power outside, there is no way to plug in the power supply. At this time, it is best to keep the state of shutdown for a period of time, and directly connect the UPS power supply to charge after the incoming call, so that the alarm will not sound.3. Line failureThe circuits involved in UPS uninterruptible power supply are relatively complex, and there are a large number of circuit boards. If it is said that the circuit inside is faulty, it may be reminded by means of an alarm, then professional maintenance is required at this time, and the inside The faulty line is replaced or reconnected correctly, so that the alarm sound will stop by itself.4. The voltage fluctuation range is too largeThe voltage fluctuation range of the UPS power supply is too large, which has exceeded the normal voltage fluctuation range of the product, so at this time, out of self-protection, the alarm will sound continuously.Even if you want to turn off the alarm, it is impossible, unless the voltage returns to the normal range, then you should suspend use at this time, and then check the cause of the excessive voltage fluctuation range, and avoid this in time. It happened again.5. UPS power supply overload operationThe UPS power supply will also alarm when it is overloaded (there is not much overload, generally the UPS power supply will shut down for protection within the specified time), at this time it is not the UPS itself fault, as long as the overloaded equipment is stopped for a few times, the UPS power supply alarm will disappear.There are many reasons why the UPS's alarm keeps going off, but there may be others. These reasons are not easy for ordinary users to think of, and even if they are, they cannot be solved by themselves. It is time for the official after-sales personnel to solve this problem. After-sales personnel can bring some tools to check in order to find out specific questions.

With the advancement of power electronic technology, automatic control technology and computer technology, frequency conversion speed regulation technology has developed rapidly. There are not many application examples. Mining belt conveyors are generally driven by power frequency and driven by hydraulic couplers, which have problems such as low transmission efficiency, large starting electric shock and mechanical shock, and inability to balance power, resulting in uneconomical system operation; belt and hydraulic coupling Serious wear and tear of the device, high maintenance and maintenance costs; there is reactive power circulation loss. Therefore, the use of frequency conversion control for belt conveyors is not only conducive to reducing the production cost of enterprises and improving the economic benefits of enterprises, but also in line with the theme of building a conservation-oriented society, which has very practical economic and social significance.1 Working principle and starting method of belt conveyorThe belt conveyor drives the belt by friction through the driving drum, and the belt drives the object to move on the support roller through tension deformation and friction. The belt is an elastic energy storage material, which stores a large amount of potential energy when the belt conveyor stops and runs, which determines that the equipment should be started with a soft start method.The traditional starting method of belt conveyor drive system adopts auto-coupling step-down, and a hydraulic coupler is installed between the motor and the reduction box. Although the hydraulic coupling can partially solve the soft start problem of the belt conveyor, it still has some shortcomings compared with the frequency converter drive:   1) When using a hydraulic coupling, adjust the mechanical efficiency of the hydraulic coupling to zero when starting, so that the motor can be started with no load. The motor must first be started with no load. When the power frequency is started, the initial current is very large, which is 4--7 times the rated current of the motor. The large starting instantaneous current will produce impact during the starting process, causing changes in the mechanical stress and thermal stress in the motor, causing serious wear and even damage to the mechanical parts. At the same time, it will also cause the voltage of the grid to drop, which will affect the normal operation of other equipment in the grid. Therefore, the large-capacity belt conveyor must also be equipped with a motor soft-start device.   2) When the hydraulic coupler works for a long time, the temperature of the liquid will rise, the alloy plug will be melted, liquid leakage will be caused, the maintenance workload will be increased, and the environment will be polluted.   3) When the hydraulic coupling is used, the loading time of the conveyor is short, which is easy to cause changes in the belt tension, so the belt strength is required to be higher.   4) Generally, belt conveyors are long-distance and large-capacity, multi-motor driven, and driven by hydraulic couplers, so it is difficult to solve the power balance and synchronization problems when multi-motor driving.2 The advantages of frequency conversion technology transformationThe rapid development of frequency conversion technology has been well applied in coal mining enterprises. The use of frequency converters to transform the drive of belt conveyors brings great social and economic benefits to users:   1) The soft start of the belt conveyor system is truly realized. Using the soft start function of the frequency converter, the soft start of the motor and the soft start of the conveyor are combined into one. The slow start of the motor drives the conveyor to start slowly, and the energy stored in the belt is slowly released to make it start The tension wave formed in the process is extremely small and causes almost no damage to the belt.2) Realize the power balance when the conveyor is driven by multiple motors. When using the inverter to drive the belt conveyor, one-to-one control is generally adopted; when multiple motors are driven, the master-slave control is adopted to achieve power balance. The main shaft belt of a coal mine in Yangquan, Shanxi Province is driven by a 135kW*3 motor. After using the master-slave control, the current difference between the master and the slave motor is about 5A at light load, and the difference is about 2A at full load. It basically realizes the power balance when the conveyor is driven by multiple motors.3) Reduce the belt strength. After using the frequency converter to drive, because the start-up time of the frequency converter is adjustable within 1S-3600S, usually the start-up time of the belt conveyor is within 60S-200S. According to the on-site setting, the start-up time of the equipment is prolonged, which greatly reduces the requirement for belt strength. , reduce the initial investment in equipment.4) Reduce the maintenance of equipment. The frequency converter is an integration of electronic devices, which converts the mechanical life into the electronic life, and has a long life, which greatly reduces the amount of equipment maintenance. At the same time, the soft start process of the belt conveyor basically has no impact on the machinery industry, and also greatly reduces the maintenance of the mechanical part of the belt conveyor system. For example, after adopting the frequency converter to drive the trough belt in Wangtai No. 2 Well of Jincheng Coal Industry Group, the annual cost savings of the belt buckle alone can reach more than 10,000 yuan.5) With the advancement of power electronic technology, automatic control technology and computer technology, frequency conversion speed regulation technology has developed rapidly. There are not many application examples. Mining belt conveyors are generally driven by power frequency and driven by hydraulic couplers, which have problems such as low transmission efficiency, large starting electric shock and mechanical shock, and inability to balance power, resulting in uneconomical system operation; belt and hydraulic coupling Serious wear and tear of the device, high maintenance and maintenance costs; there is reactive power circulation loss. Therefore, the use of frequency conversion control for belt conveyors is not only conducive to reducing the production cost of enterprises and improving the economic benefits of enterprises, but also in line with the theme of building a conservation-oriented society, which has very practical economic and social significance.6) Energy saving. The energy-saving effect of using variable frequency drive on the conveyor is mainly reflected in two aspects: system power factor and system efficiency.a. Improve the system power factorUnder normal circumstances, coal mine motors have a relatively large margin in the design process, and most of them cannot run at full load during operation. The motor works at full voltage and full speed, but the load is often small, and there is also no-load operation for part of the time. The motor has the highest efficiency and the best power factor only when it is close to full load, and decreases when it is lightly loaded, causing unnecessary power loss. This is because when the load is light, the active component of the stator current is very small, mainly the reactive component of the excitation, so the power factor is very low. After using the frequency converter to drive, the power factor is over 0.9 in the whole process, which greatly reduces the reactive power.b. Improve system efficiencyAfter using the frequency converter to drive, the motor and the reducer are directly hard-connected, and the link of the hydraulic coupling is reduced in the middle. However, the transmission efficiency of the hydraulic coupler itself is not high, and it is mainly driven by liquid. The transmission efficiency of the liquid is much lower than that of the direct hard connection. Therefore, after using the inverter to drive, the total transmission efficiency of the system should be It is 5%~10% higher than the efficiency of hydraulic coupling drive.In addition, the mine is usually far away from the substation, and the voltage fluctuates greatly in different periods. Using the automatic voltage stabilization function of the frequency converter also has some energy-saving effects. However, the voltage input range of the inverter is small, usually only 342~418V. Therefore, a high-power compensating AC voltage stabilizer is often configured at the front end of the inverter. The model specification of the voltage stabilizer can be 1.25 times that of the inverter. This ensures the safe operation of the device.

A transformer is a static electromagnetic device that changes electrical energy and transfers electrical energy from one circuit to another, and plays an important role in electronic equipment. For example, the AC voltage and DC voltage in the power supply equipment are almost all obtained by the transformer through transformation and rectification. In addition, most aspects of circuit isolation, matching and impedance transformation are also realized through transformers. There are many varieties of transformers, too many to list. For example: according to the classification of working frequency, it can be divided into power frequency power transformer, intermediate frequency power transformer, audio transformer, super audio transformer and high frequency transformer. According to the classification of use, it can be divided into power transformers, audio transformers, pulse transformers, switching power transformers, high-frequency transformers, special transformers, etc.The coil constitutes the circuit part of the transformer and is the basic component of the transformer. It consists of several windings. Except for the autotransformer, the coil windings must be insulated, and the two circuits connected by the windings must also be insulated. Enameled wire is the most commonly used winding wire material, and it is also the key material that affects the quality and reliability of the transformer. When the coil is abnormal, the transformer will have poor parameters, or even open circuit or burn out. Therefore, the coil is the main test and analysis entry point in the transformer failure analysis.Here are some common failure mechanisms related to coils (enameled wires):01.Enameled wire corrosionInside the transformer, enameled wire is used to wind the coil. During the winding process, the enameled film on the surface of the enameled wire may be slightly damaged. The various materials used in the transformer manufacturing process may contain corrosive ion pollution, such as insulating paint, glue, tape, skeleton, flux, etc. When the transformer works in a humid environment, the corrosive ions are easy to corrode the enameled wire from the damage of the enameled film, and finally cause the coil to open.In addition, the enameled film of the enameled wire is also easily damaged due to thermal or mechanical reasons at the welding point between the lead-out end of the enameled wire and the pin. When the working environment of the transformer contains corrosive ions (such as salt spray environment), the damaged part of the enameled wire is also easily corroded.02.Poor insulationWhen the enameled wire itself has defects (too many pinholes), or the coil is damaged during the winding process (the skeleton burr in the transformer should be controlled within a reasonable range, generally the length of the burr is not more than 1mm, and the length of the burr is too long, which can easily lead to the structure of the enameled wire. damage, higher requirements for high-reliability products), even if there are no corrosive substances that corrode the coil in the internal and external environment of the transformer, the transformer is easily burned out due to poor insulation between turns/layers of the enameled wire. When the primary and secondary coils are coaxially wound, if the insulating tape is not wrapped properly, it will also lead to breakdown failure.03.Power failureBecause the input voltage is too high or the design margin of the magnetic saturation point of the transformer is insufficient, it is easy to cause the magnetic saturation of the transformer and eventually lead to the overheating of the coil, which is another important reason for the failure of the transformer. Magnetic saturation occurs when the primary voltage is too high, causing the magnetic flux density to be greater than the saturation magnetic induction. After the magnetic saturation, the primary current soars and the heat generation increases, eventually causing the coil to burn out or the fuse to blow.All kinds of components containing coils may have overcurrent failure, such as inductors, relays, etc.