electrical topic

Physical and chemical properties of SF6 Gas Circuit Breaker

In an SF6 circuit breaker, sulphur hexafluoride gas is employed because the arc ending medium. The, sulphur hexafluoride gas (SF6) is an electronegative gas and has a strong tendency to absorb free electrons. The contacts of the breaker opened in a high-pressure flow sulphur hexafluoride (SF6) gas and an arc is struck between them.  1. FUTURE: SF6 circuit breaker has the following •Superior Interrupting capability: This breaker will with success interrupt …

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Transformer Routine Maintenance: maintenance is most importance of electrical equipment

The following chapters address routine maintenance, some processes area unit typically higher than and on the far side routine maintenance work to stay the transformer operational.  Transformer medical specialty needs specialized instrumentation and coaching. This experience isn’t expected to be maintained in each workplace. In some cases, it should be necessary to contact medical specialty specialists, either within or outside Reclamation, World Health Organization have the most recent instrumentation and up to date expertise. Shows the transformer condition assessment methodology, linking routine maintenance and diagnostics 1 Introduction to Reclamation Transformers Standards organizations like American National …

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Importance of transformer bushing/polarity

1. Transformer Bushings In electric power, a bushing is a hollow electrical insulator that allows an electrical conductor to pass safely through a conducting barrier such as the case of a transformer or circuit breaker without making electrical contact with it. The two most typical kinds of bushings used on transformers as main lead entrances square measure solid ceramic ware bushings on smaller transformers and …

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Autotransformers

1. Autotransformers It is attainable to get electrical device action by suggests that of one coil, provided that there’s a “tap connection” somewhere on the winding. Transformers having only 1 winding area unit known as autotransformers, shown schematically in figure. An autotransformer has the standard core however only 1 winding, that is common to each the first and secondary circuits. The primary is usually the portion of the winding connected to the AC power supply. This transformer could also be wont to step voltage up or down. …

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Transformer action and principal

1.1. principal of operation Transformer operate relies on the principle that electricity is transferred expeditiously by magnetic induction from one circuit to another circuit. One winding of a electrical device is energized from electricity (AC) supply, alternating force field is established within the electrical device core. Alternating magnetic lines of force, referred to as “flux” …

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SYNCHRONIZING

1. General Today are discussed the principles of synchronizing, Today are discussed the principles of synchronizing, accomplishing it. In theory, there are a minimum of two simple measurements or indications, which may be used for synchronizing a generator to a grid. When two voltages satisfy the conditions of being equal in magnitude, have an equivalent frequency and an angle of zero …

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Transmission Line Protection Principles:

1.Transmission line: Transmission lines are a vital part of the electrical distribution system, as they provide the path to transfer power between generation and load. Transmission lines operate at voltage levels from 69kV to 765kV, and are ideally tightly interconnected for reliable operation. Transmission protection systems are designed to identify the location of faults and …

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