I. Basic knowledge of transformers
1. Definition, role of transformers
The transformer is a relatively static electrical device consisting of two or more circuits around the same iron core, which are interconnected with the transversal magnetic fluxes. Power transformers are used for transmission, rational distribution and safe use of the energy economy from power plants。
2. The working principles of transformers
In short, the transformer works on "electromagnetic, magnetic." the primary (one) and secondary (two) coil of the transformer is co-located on a steel core, where, after a single loop into voltage u1, the transmagnetic fluxes are produced, which pass through a circuit and a secondary circuit, which, in accordance with the laws of electromagnetic sensing, generate induction e1 and e2 in a circuit and a secondary circuit, respectively。
According to the laws of electromagnetic induction, the induction power of a side, a side, and a subside rounding group are:
E1/e2=u1/u2=n1/n2=k (k as ratio)
3. Basic composition of transformers
The oil-impregnated transformers usually consist of seven components, as follows:
Dry transformers usually consist of four major components, as follows:
4. Structure of transformers
3-phase oil-impregnated electric transformer exterior
Dry electrical transformer externals
5. Common transformer definition
6. The transformer classification
Transformers classified by phase
The transformers are classified by cooling
The transformer is classified in a voltage mode
7. Mode of transformer
Description of the oil-impregnated transformer product model
8. Technical parameters for transformers
The main technical data for transformers under specified conditions of use and operation include, inter alia, rated capacity, rated voltage and its components, rated frequency, and quantitative energy data (resistant voltage, airborne currents, airborne wear and tear)。
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