The selection standards for transformer core typically include the following factors:

Core Material:

Transformer cores are usually made of silicon steel sheets containing silicon to effectively reduce the core's magnetic permeability, thereby minimizing hysteresis losses and eddy current losses. Standards often specify silicon content and other physical properties of the silicon steel sheets.

Magnetic Flux Density:

Depending on the transformer's rated voltage and frequency, standards typically specify the design magnetic flux density of the core to ensure optimal performance under rated operating conditions.

Hysteresis and Eddy Current Losses:

Standards usually specify the maximum allowable hysteresis and eddy current losses to ensure that the transformer does not generate excessive heat and energy losses during operation.

Core Shape and Structure:

Standards may specify the shape and structure of the core, such as E-type, I-type, U-type, etc., to accommodate different types of transformers and applications.

Core Insulation:

For certain special applications, standards may require insulation treatment of the core to prevent current from flowing through the core, thereby reducing eddy current losses.

Dimensions and Capacity:

Standards typically specify the core dimensions and specifications required for transformers of different sizes and capacities to meet design requirements.

Environmental Conditions:

Standards may require that the core be able to operate under specific environmental conditions, such as temperature ranges, humidity, etc.

Compliance with Standards:

Core manufacturers usually need to ensure that their products comply with specific international or regional standards, such as IEC (International Electrotechnical Commission) standards, IEEE (Institute of Electrical and Electronics Engineers) standards, etc.

These standards and requirements help ensure that transformer cores exhibit high efficiency, low losses, and excellent performance to meet the needs of various power transmission and distribution applications.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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