power transformer production line

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  • The difference between the action principle of the main variable light and heavy gas protection
    The difference between the action principle of the main variable light and heavy gas protection
    Corresponding protection devices shall be installed for the short-circuit faults of the transformer lead wires, bushings and internals, and shall meet the following requirements: 1) The single-running transformer of 10MVA and above and the parallel running transformer of 6.3MVA and above should be equipped with longitudinal differential protection. Important transformers with 6.3MVA and below operating independently can also be equipped with longitudinal differential protection.2) Transformers below 10MVA can be equipped with current quick-break protection and overcurrent protection. For transformers of 2MVA and above, when the current quick-break sensitivity coefficient does not meet the requirements, longitudinal differential protection should be installed. 3) 0.4MVA and above, the primary voltage is 10kV and below, and the coil is a transformer with a delta-star connection, and a two-phase three-relay type overcurrent protection can be used.4) The various protection devices specified in this article shall operate to disconnect the circuit breakers on each side of the transformer.
  • Must see! A comprehensive explanation of the composition, structure, oil system and fault operation and maintenance
    Must see! A comprehensive explanation of the composition, structure, oil system and fault operation and maintenance
    Oil-immersed transformers have the characteristics of good heat dissipation, low loss, large capacity and low price. At present, most of the power transformers running on the grid are oil-immersed transformers, of which more than 80% are cooled by natural oil circulation. It is a commonly used cooling structure to set a guide plate in the coil of a natural oil circulation transformer. This paper focuses on analyzing the structure, operation and maintenance of oil-immersed power transformers, and specifically analyzes the oil system of oil-immersed power transformers, and briefly analyzes the faults of oil-immersed power transformers. Hope to increase understanding and analysis of my country's oil-immersed power transformers.
  • When the transformer core is stacked, what are the seam methods? When the transformer core is stacked, what are the seam
    When the transformer core is stacked, what are the seam methods? When the transformer core is stacked, what are the seam
    When the transformer core is stacked, what are the seam methods? What are the characteristics of each? This article starts from the popular science of iron cores, and expands and expands to check the seam method of silicon steel sheets when the transformer iron cores are stacked. (If there are any mistakes or additions, please leave a message at the end of the article)
  • What impact might the Russian-Ukrainian conflict have on the motor industry? Supplier
    What impact might the Russian-Ukrainian conflict have on the motor industry? Supplier
    Russian President Vladimir Putin signed an order on the evening of the 21st to recognize the "Donetsk People's Republic" and "Luhansk People's Republic" in eastern Ukraine. On the 24th local time, Russian President Vladimir Putin said in an emergency televised speech that he had decided to conduct a special military operation in the Donbas region.
  • 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?" 
  • Inventory! 7 types of fault judgment methods and solutions for dry-type transformer noise, worth collecting!
    Inventory! 7 types of fault judgment methods and solutions for dry-type transformer noise, worth collecting!
    This article mainly counts 7 types of fault judgment methods and solution analysis of dry-type transformer noise. If there is any error or omission, please point it out in the comment area.Analysis of 7 types of fault judgment methods and solutions for dry-type transformer noise➢Resonance problems of fans, casings and other components➢Installation problems➢Influence of installation environment➢The problem of vibration of busbar bridge➢Transformer core resonates by itself.➢Transformer coil self-resonance➢The problem of the nature of the load
  • 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.
  • 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
  • Transformer No-load/Load  Test Introduction
    Transformer No-load/Load Test Introduction
    No-load test: Apply the rated voltage of the sine wave rated frequency from a certain winding of the transformer (generally from the secondary low-voltage side), and open the other windings to measure the no-load current and no-load loss. If the test conditions are limited and the power supply voltage cannot reach the rated voltage, the test can be performed under non-rated voltage conditions. This test method has a large error and is generally only used to check whether the transformer is faulty. Only the test voltage reaches more than 80% of the rated voltage. can be used to test the no-load loss.
  • 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.
  • 55 Transformer Knowledge You Have to Know
    55 Transformer Knowledge You Have to Know
    1. What does △/Y0-11 mean on the transformer nameplate?Answer: According to the different connection methods of the primary coil and the secondary coil of the transformer, the phase angle of the line voltage on the primary side and the secondary side of the transformer is different. Transformer △/ Y0-11 means that the phase angle difference between the two line voltages of the transformer is 330°. It is customary to use the clock notation, that is, 11 o'clock.
  • 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. 
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