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What is Electric Power Transformer?

08/07/2024

What is Electric Power Transformer?

Power Transformer Definition

A power transformer is a static device that efficiently transfers electrical energy between circuits without changing the frequency, using electromagnetic induction.

Main Technical Parameters

Rated voltage
Rated power
Rated current
Voltage ratio
Turns ratio

Voltage Adjustment

Power transformers modify voltage levels to enhance energy efficiency and safety in power transmission and distribution.

Core and Shell Types

Step-up and step-down transformers
Single-phase and three-phase transformers
Two-winding and autotransformers
Distribution and power transformers
Instrument transformers
Oil-cooled and dry-type transformers
Core type and shell type transformers
Outdoor vs. Indoor Transformers

Types of Power Transformers

Various types, such as step-up, step-down, single-phase, and three-phase, cater to different electrical system requirements.

Power Transformers Advantage

To reduce power loss in transmission lines
Galvanic Isolation Provided
Impedance Matching
Voltage Level Adjustment

Applications

Essential in sectors like power generation, transmission, and distribution, power transformers also provide specific voltage levels for diverse applications.

Topics

Machines Transformers Electric Power Transformer

Wenzhou Rockwell Transformer Co., Ltd. It is a high - tech enterprise integrating R & D, production, sales, and service. It focuses on the manufacturing of power transformers and supporting equipment, and is committed to providing efficient, reliable, and energy - saving power transmission and distribution solutions for global customers. We can offer: •Distribution transformers and substations •Outdoor switchgears and breakers(recloser) •Switchgears and it’s components (GIS, RMU, VCB, SF6 CB) Market and Service: We always take customers as the orientation and provide customized services according to their requirements. Our products are exported to the Middle East, Africa, Northern Europe, South America, and many other countries and regions. Drive the future of electricity with technological innovation and become a leading global supplier of intelligent power equipment.

Fault Analysis and Treatment of Oil-Immersed Transformers

Fault Analysis and Treatment of Oil-Immersed Transformers

Oil Leakage at Welded JointsOil leakage at welded joints primarily stems from poor welding quality, such as incomplete or detached welds, and defects like pinholes and gas pores. Although oil-immersed transformers are initially coated with solder and paint during manufacturing, potentially masking these issues temporarily, the defects tend to surface during operation. Additionally, electromagnetic vibration can cause weld cracks, leading to oil leakage.To resolve such leaks, the first critical s

What losses occur during operation of the transformer? How to reduce losses?

What losses occur during operation of the transformer? How to reduce losses?

Transformers experience various types of losses during operation, primarily categorized into two main types: copper losses and iron losses.Copper LossesCopper losses, also known as I²R losses, are caused by the electrical resistance of the transformer windings—typically made of copper. As current flows through the windings, energy is dissipated in the form of heat. These losses are proportional to the square of the load current (I²R), meaning they increase significantly with high

Transformer Detection, Testing, Maintenance and Servicing

Transformer Detection, Testing, Maintenance and Servicing

Transformer testing, inspection, and maintenance are essential tasks to ensure normal operation and extend the service life of transformers. Below are some recommended steps:Visual Inspection: Regularly inspect the transformer's exterior, including the enclosure, cooling system, and oil tank. Ensure the enclosure is intact, free from corrosion, damage, or leakage.Insulation Resistance Testing: Use an insulation resistance tester to check the transformer's insulation system. Verify that the insul

Preventive Detection and Testing of Transformers

Preventive Detection and Testing of Transformers

I. DC Resistance Test of Transformer Primary and Secondary Windings:The DC resistance of transformer primary and secondary windings can be measured using the four-wire (Kelvin) method, which is based on principles related to accurate resistance measurement.In the four-wire method, two test leads are connected to both ends of the winding under test, while the other two leads are connected to adjacent winding terminals. An AC power source is then applied to the two leads connected to the adjacent

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