DIFFERENTIAL PROTECTION OF A POWER TRANSFORMER
Power transformers need to be protected from damages caused by internal and external faults. Power transformer can be protected from…
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TYPES OF FAULTS ON POWER TRANSFORMER
Two types of faults occur in power transformer i.e. external and internal electrical faults.External Faults in Power Transformer: (a) External…
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POWER TRANSFORMER AND ITS IMPORTANCE
POWER TRANSFORMER “A Power transformer is a static machine used for transforming power from one circuit to another circuit without…
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CLASSIFICATION OF ENERGY
It is broadly classified into Conventional energy is in practice for long duration of time and well established technology is…
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WORKING OF PLASMA CHAMBERS
The plasma chambers suspend the silicon and the phosphorus or boron molecules in a gaseous state. This mixture is pushed…
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BREAKDOWN OF SOLID INSULATING MATERIALS
In solid dielectrics, highly purified and free of imperfections, the breakdown strength is high, of the order of 10 MV/cm.…
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BREAKDOWN OF COMPOSITE INSULATION
Almost no complete electrical insulation consists of one insulating phase. Usually more than one insulating material will be involved, either…
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ELECTRO CHEMICAL BREAKDOWN
Since no insulant is completely free of ions, a leakage current will flow when an electric field is applied. The…
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SURFACE BREAKDOWN
Surface flashover Surface flashover is a breakdown of the medium in which the solid is immersed. The role of the…
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PURIFICATION OF A LIQUID FOR TESTING
(a) Removal of dust Small dust particles can become charged and cause local stresses which can initiate breakdown. They can…