electrical transformer

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  • When does magnetizing inrush current occur in transformers?
    When does magnetizing inrush current occur in transformers?
    01 Inrush currentWhen a transformer is first energized, a phenomenon called magnetizing inrush occurs. Although inrush currents are generally not as disruptive as fault currents, the duration of magnetizing inrush currents is on the order of seconds (compared to periods with fault currents).
  • Troubleshooting of abnormal phenomena in transformers
    Troubleshooting of abnormal phenomena in transformers
    Analysis of abnormal operation of transformersTransformer sound is abnormalAs soon as the transformer is connected to the power supply, there will be a buzzing sound, which is mainly due to the effect of high-voltage magnetic flux. During normal operation, the sound of the transformer is uniform. When there are other noises, you should carefully find the cause and deal with it.
  • The principle, structure and operation and maintenance of transformer gas protection
    The principle, structure and operation and maintenance of transformer gas protection
    Gas protection is the main protection for transformer internal faults. It can act sensitively to transformer inter-turn and inter-layer short circuits, iron core faults, internal bushing faults, internal winding disconnection, insulation deterioration and oil level drop. When a fault occurs inside the oil-immersed transformer, the arc will decompose the insulating material and generate a large amount of gas, which flows from the oil tank to the oil pillow, and its intensity varies with the severity of the fault, reflecting the air flow and oil flow The action protection is called gas protection, also called gas protection. During the operation of the transformer, due to internal faults, sometimes we cannot identify and take measures in time, which is easy to cause some accidents. After the protection of the gas relay, the occurrence of similar incidents can be avoided to a certain extent.
  • How to judge and deal with these abnormal phenomena in transformers?
    How to judge and deal with these abnormal phenomena in transformers?
    1. Analysis of abnormal operation of transformers(1) The sound of the transformer is abnormalAs soon as the transformer is connected to the power supply, there will be a buzzing sound, which is mainly due to the effect of high-voltage magnetic flux. During normal operation, the sound of the transformer is uniform. When there are other noises, you should carefully find the cause and deal with it.
  • Power Transformer Basics
    Power Transformer Basics
    1. Classification and models of power transformers2. 1. Classification by use3. (1) Step-up transformer: used by the power plant to transmit electricity to the outside.4. (2) Step-down transformer: The substation of the power supply bureau is used for voltage conversion.5. (3) Distribution transformer: used to supply power to users.6. (4) Plant transformer: Provides internal electricity for the power plant.7. (5) Transformer for station: Provide internal electricity for the substation.8. (6) Converter transformer: for DC power transmission, one side is connected to AC power, and one side is connected to the converter valve.9. (7) Rectifier transformer: used in thermal power plants to supply power to electrostatic precipitators.
  • Do you know what conditions are required for the parallel operation of transformers?
    Do you know what conditions are required for the parallel operation of transformers?
    The parallel operation of transformers means that the primary windings of two or more transformers are connected in parallel on the busbar of the same voltage, and the secondary windings are connected in parallel on the busbar of another voltage.Its meaning is: when one transformer fails, other transformers running in parallel can still continue to operate to ensure the power consumption of important users; or when the transformer needs to be repaired, the standby transformer can be connected in parallel, and then the transformer to be repaired is powered off and repaired. , which can not only ensure the planned maintenance of the transformer, but also ensure that the power supply is not interrupted and improve the reliability of the power supply.
  • About transformers, you have to master the knowledge points!
    About transformers, you have to master the knowledge points!
    1. What is a transformer?In the AC circuit, the device that increases or decreases the voltage is called a transformer. The transformer can convert any value of voltage into the voltage value we need with the same frequency to meet the requirements of electric energy transmission, distribution and use.For example, the electricity from a power plant has a low voltage level, and the voltage must be increased before it can be transported to a distant power consumption area. The power consumption area must be reduced to a suitable voltage level to supply power equipment and daily electricity. Equipment.
  • How much KW power consumption can a 1000KVA transformer withstand?
    How much KW power consumption can a 1000KVA transformer withstand?
    Question:"There is an old-fashioned transformer of 1000KVA with an existing load of about 200KW. If a new load of about 600KW is to be added, can this transformer withstand it?" 
  • A paper to explain the modeling and characteristic analysis of transformers
    A paper to explain the modeling and characteristic analysis of transformers
    IntroductiontransformerA device that changes voltage, current, or phase by coupling a magnetic circuitWhy learn Transformers?Transformers are also known as stationary AC motors
  • What is the main power transformer factory look like
    What is the main power transformer factory look like
    This video showed you what a main power transformer look like. 
  • After reading this, you will have a comprehensive understanding of the material and construction of the transformer body
    After reading this, you will have a comprehensive understanding of the material and construction of the transformer body
    The main materials of the transformer body include magnetic circuit materials, circuit materials, insulating materials, structural materials, etc. 
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