Electrical Power Transformer Basic Guide

Electricity serves as the lifeblood of modern society and forms the cornerstone of national development. At the heart of the power system lies the electrical power transformer, an indispensable component utilized across power generation, transmission, substations, and distribution networks. It stands as a vital tool for both stepping up and stepping down voltages, crucially balancing efficiency and transmission losses in the power grid.

Definition and Function

Electrical power transformers are pivotal within power plants and substations, facilitating the efficient transmission of electric energy. These devices elevate voltage for long-distance transmission while lowering it to meet local consumption demands. They operate based on the principles of electromagnetic induction, where two or more windings wound around a common iron core create an alternating magnetic field.

Read more： The Ultimate Guide to Electric Transformer

Types of Electrical Power Transformers

Transformers vary in type based on cooling methods and phase configurations:

Oil-immersed Transformers

Filled with transformer oil for cooling and insulation, these are common in various projects. They operate under standard temperature ranges and offer variations like mineral and vegetable oil-filled options (marked as ONAN and KNAN respectively).

Dry-type Transformers

These feature air as a cooling medium and are preferred where safety and environmental considerations are paramount, such as in buildings and airports.

Single-phase and Three-phase Transformers

Single-phase transformers suit civil applications like residential complexes, while three-phase transformers cater to industrial needs, supporting higher capacities and voltages up to 235kV.

Learn more: How Much Do You Know For The Different Types Of Transformers?

Nameplate Information

A transformer’s nameplate displays essential operational details:

• Rated Capacity: Output capacity under normal conditions, expressed in VA, kVA, or MVA.
• Rated Voltage and Current: Terminal voltage and current specifications.
• Losses: No-load and short-circuit losses, crucial for operational efficiency assessments.
• Connection Group: Indicates winding connections and phase relationships.

Learn more about Transformer Nameplate

Significance of Transformer Grounding

Proper grounding of the transformer’s iron core is critical to prevent operational issues like potential breakdown discharge and overheating. Single-point grounding ensures stability and minimizes risks associated with floating potentials.

Customization and Sales

Daelim Transformer, a leading transformer manufacturer, offers:

• Rapid production times of 6-8 weeks.
• Competitive pricing without compromising on quality.
• International certifications (UL/cUL, CSA, CNAS, SGS) and proven track record with global brands.
• Extended warranty periods and dedicated service centers across key regions.

Conclusion

As a trusted supplier in the transformer industry, Daelim Transformer stands ready to meet diverse customer needs—from power companies to specialized sectors like crypto mining. Their commitment to quality, efficiency, and customer satisfaction makes them a preferred partner in the global electrical power transformer market.

Contact Daelim Transformer for more information on how we can support your transformer requirements