Oil-immersed transformers

This product is an oil-immersed power transformer, a core power system device. It uses electromagnetic induction to adjust voltage, with insulating oil for insulation and heat dissipation, widely used in power stations and grids.

Ask Us

Information

Product Definition and Principle

An oil - immersed power transformer is a common power equipment. It utilizes the principle of electromagnetic induction to convert an AC voltage and current of a certain value into an AC voltage and current of another value with the same frequency. By winding two or more windings on a closed iron core, when the primary winding is connected to an AC power source, an alternating magnetic flux is generated in the iron core, which then induces a voltage in the secondary winding, realizing the transmission of electric energy and the transformation of voltage levels.

Structural Composition

Iron Core: As the magnetic circuit part of the transformer, it is generally made of silicon steel sheets with high magnetic permeability stacked together to reduce hysteresis and eddy current losses.
Windings: Divided into primary winding and secondary winding, they are the circuit part of the transformer and are usually made of materials with good conductivity such as copper or aluminum.
Insulating Oil: It plays a dual role of insulation and heat dissipation. It can enhance the insulation performance inside the transformer and transfer the heat generated by the iron core and windings out at the same time.
Bushings: Installed on the tank cover of the transformer, their function is to lead the high - and low - voltage leads inside the transformer out of the tank and insulate the leads from the tank. The multiple column - like components at the top in the picture are bushings.
Oil Tank: Used to accommodate the iron core, windings and insulating oil. It is generally welded from steel plates and has sufficient mechanical strength and sealing performance.

Main Features

Good Heat Dissipation Performance: The insulating oil can effectively take away the heat generated during the operation of the transformer, ensuring the stable operation of the transformer under high load. It is suitable for power transmission scenarios with large capacity and high voltage.
Reliable Insulation Performance: In addition to the insulating effect of the oil itself, it can also prevent the windings from getting damp to a certain extent, enhance electrical insulation and reduce the probability of failures.
Wide Capacity Range: Products with different capacities can be manufactured according to actual needs, covering from small distribution transformers to large power transformers.
Long Service Life: Under normal maintenance and operating conditions, the service life of oil - immersed power transformers is relatively long, generally reaching 20 - 30 years.

Main Classification

Classified by Phase Number: It can be divided into single - phase oil - immersed transformers and three - phase oil - immersed transformers. Three - phase transformers are mainly used for power transmission and distribution in power systems, while single - phase transformers are commonly used in occasions with single - phase loads such as residential electricity consumption.
Classified by Purpose: Including step - up transformers (used in power plants to increase the voltage output by generators for long - distance transmission), step - down transformers (used to reduce the high voltage of transmission lines to meet the power demand on the user side), distribution transformers (used to distribute electric energy to end users), etc.

Application Scenarios

Power Station: In power plants, step - up oil - immersed power transformers increase the relatively low voltage generated by generators to a voltage level suitable for long - distance transmission, reducing power loss during transmission.
Power Transmission and Distribution System: It is a key equipment in the process of power transmission and distribution. Through step - down transformers in substations at all levels, high - voltage electricity is gradually reduced to a voltage suitable for industrial, commercial and residential use.
Industrial Field: Various factories, especially large high - energy - consuming enterprises such as steel, chemical and metallurgical industries, need to use oil - immersed transformers with different capacities and voltage levels to meet the power demand of production equipment.
Urban and Rural Power Grids: In the distribution systems of cities and rural areas, oil - immersed transformers are widely used in the power supply of communities, shopping malls, schools, villages and other places, providing stable power for people's daily life and commercial activities.

Maintenance Points

Regularly Check the Oil Level: Ensure that the insulating oil is within the normal range to prevent the decline of heat dissipation and insulation performance due to lack of oil.
Monitor Oil Temperature: Through the oil temperature monitoring device, timely understand the operating temperature of the transformer and avoid failures caused by overheating.
Insulating Oil Detection: Regularly conduct laboratory analysis on the insulating oil to detect indicators such as its insulation performance, water content and gas content. If necessary, carry out oil filtration or oil change treatment.
Appearance Inspection: Check whether the bushings of the transformer are damaged or have discharge phenomena, whether the oil tank has oil leakage, etc., and deal with problems in a timely manner.

Product Definition and Principle

An oil - immersed power transformer is a common power equipment. It utilizes the principle of electromagnetic induction to convert an AC voltage and current of a certain value into an AC voltage and current of another value with the same frequency. By winding two or more windings on a closed iron core, when the primary winding is connected to an AC power source, an alternating magnetic flux is generated in the iron core, which then induces a voltage in the secondary winding, realizing the transmission of electric energy and the transformation of voltage levels.

Structural Composition

Iron Core: As the magnetic circuit part of the transformer, it is generally made of silicon steel sheets with high magnetic permeability stacked together to reduce hysteresis and eddy current losses.
Windings: Divided into primary winding and secondary winding, they are the circuit part of the transformer and are usually made of materials with good conductivity such as copper or aluminum.
Insulating Oil: It plays a dual role of insulation and heat dissipation. It can enhance the insulation performance inside the transformer and transfer the heat generated by the iron core and windings out at the same time.
Bushings: Installed on the tank cover of the transformer, their function is to lead the high - and low - voltage leads inside the transformer out of the tank and insulate the leads from the tank. The multiple column - like components at the top in the picture are bushings.
Oil Tank: Used to accommodate the iron core, windings and insulating oil. It is generally welded from steel plates and has sufficient mechanical strength and sealing performance.

Main Features

Good Heat Dissipation Performance: The insulating oil can effectively take away the heat generated during the operation of the transformer, ensuring the stable operation of the transformer under high load. It is suitable for power transmission scenarios with large capacity and high voltage.
Reliable Insulation Performance: In addition to the insulating effect of the oil itself, it can also prevent the windings from getting damp to a certain extent, enhance electrical insulation and reduce the probability of failures.
Wide Capacity Range: Products with different capacities can be manufactured according to actual needs, covering from small distribution transformers to large power transformers.
Long Service Life: Under normal maintenance and operating conditions, the service life of oil - immersed power transformers is relatively long, generally reaching 20 - 30 years.

Main Classification

Classified by Phase Number: It can be divided into single - phase oil - immersed transformers and three - phase oil - immersed transformers. Three - phase transformers are mainly used for power transmission and distribution in power systems, while single - phase transformers are commonly used in occasions with single - phase loads such as residential electricity consumption.
Classified by Purpose: Including step - up transformers (used in power plants to increase the voltage output by generators for long - distance transmission), step - down transformers (used to reduce the high voltage of transmission lines to meet the power demand on the user side), distribution transformers (used to distribute electric energy to end users), etc.

Application Scenarios

Power Station: In power plants, step - up oil - immersed power transformers increase the relatively low voltage generated by generators to a voltage level suitable for long - distance transmission, reducing power loss during transmission.
Power Transmission and Distribution System: It is a key equipment in the process of power transmission and distribution. Through step - down transformers in substations at all levels, high - voltage electricity is gradually reduced to a voltage suitable for industrial, commercial and residential use.
Industrial Field: Various factories, especially large high - energy - consuming enterprises such as steel, chemical and metallurgical industries, need to use oil - immersed transformers with different capacities and voltage levels to meet the power demand of production equipment.
Urban and Rural Power Grids: In the distribution systems of cities and rural areas, oil - immersed transformers are widely used in the power supply of communities, shopping malls, schools, villages and other places, providing stable power for people's daily life and commercial activities.

Maintenance Points

Regularly Check the Oil Level: Ensure that the insulating oil is within the normal range to prevent the decline of heat dissipation and insulation performance due to lack of oil.
Monitor Oil Temperature: Through the oil temperature monitoring device, timely understand the operating temperature of the transformer and avoid failures caused by overheating.
Insulating Oil Detection: Regularly conduct laboratory analysis on the insulating oil to detect indicators such as its insulation performance, water content and gas content. If necessary, carry out oil filtration or oil change treatment.
Appearance Inspection: Check whether the bushings of the transformer are damaged or have discharge phenomena, whether the oil tank has oil leakage, etc., and deal with problems in a timely manner.

Get the latest price? We'll respond as soon as possible(within 12 hours)