Three Phase Power Transformer

The three-phase power transformer produced by Timetric Electric：

1. Definition of three-phase power transformer

Three-phase power transformer is an electrical device used to transform AC voltage levels. It is usually composed of high-voltage winding, low-voltage winding, iron core and oil tank, among which high-voltage winding and low-voltage winding realize voltage transformation through electromagnetic induction principle, iron core plays the role of enhancing magnetic field, and oil tank is used for insulation and heat dissipation.

2. Classification of three-phase power transformer

According to different classification standards, three-phase power transformers can be divided into many types. According to the structural form, it can be divided into: oil-immersed, dry, gas-insulated, etc.; according to the purpose, it can be divided into: power transformer, distribution transformer, autotransformer, rectifier transformer, etc.; according to the number of phases, it can be divided into: single-phase transformer, three-phase transformer, etc.

3. Working principle of three-phase power transformer

The working principle of Three Phase Power Transformer is based on the principle of electromagnetic induction. When AC is passed into the high-voltage winding, an alternating magnetic field will be generated in the iron core, and then an electromotive force will be induced in the low-voltage winding, thereby realizing voltage transformation. During the transformation process, the turns ratio between the high-voltage winding and the low-voltage winding determines the voltage transformation ratio.

Main Technical Parameters

Working Environment：

Timetric ElectricThree phase power transformer use environment:

1. Applicable altitude: ≤5000m.

2. Ambient temperature: -15℃~+45℃.

3. Relative humidity: ≤90%.

4. The installation site should be free of gases, steam, chemical deposits, dirt, conductive dust and other explosive, flammable and corrosive substances that seriously affect the insulation strength of the transformer.

5. Anything that does not meet the above conditions of use should be negotiated with us.

6. Careful design and manufacturing can be carried out according to user requirements.

In order to ensure the safe and reliable operation of the transformer, necessary inspections and tests should be carried out before operation, strict monitoring and regular maintenance should be carried out during operation, and abnormalities of the transformer should be discovered and handled in time.

Before putting into operation, new and overhauled transformers should pay special attention to checking whether the oil level of the oil storage cabinet is normal, whether the desiccant in the desiccant is damp, whether the safety airway is intact, whether the tap switch position is normal, whether the cooling device is complete, whether the control circuit is good, whether the grounding device is intact, etc.; in the test items, special attention should be paid to measuring the insulation resistance, absorption ratio and determining the connection group; in the operation monitoring, special attention should be paid to the physical quantities of the transformer, which should be within the rated range.

During the operation of the transformer, the most common faults are winding faults, core faults, and partial faults such as bushings and tap switches; according to the phenomenon of the fault, the cause should be found and the corresponding treatment method should be adopted. The following table lists the phenomenon, cause and treatment methods of common transformer faults.

Features and advantages of transformers

Features and Benefits of Three phase power transformer:

1. High isolation;

2. Good N-G performance;

3. High common mode interference suppression;

4. Convert △ to Y or Y to △;

5. Easy conversion of voltage taps;

6. Designed according to the user's special performance requirements.

Product Real Shot

FAQ

Can your company provide customized Three phase power transformer?

Of course, please provide all the requirements of the oil-immersed transformer as much as possible, such as: voltage, capacity, voltage ratio, frequency, product application range, cooling method, etc.

What is your fastest delivery time?

Under normal circumstances, we accept customer inquiries, communicate and confirm the specific parameters of the oil-immersed transformer, and the actual production time is determined according to the purchase quantity.

How is your after-sales service?

We support a 1-year warranty. The normal quotation does not include on-site after-sales service. Free online communication and guidance are available.