Power Transformer Iron Core

Power Transformer Iron Core Product Description

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Power Transformer Core Material and Construction

• Laminated Electrical Steel:

Iron transformer cores are typically made from high-quality electrical steel that is formed into thin, insulated layers.

 

• Minimizing Losses:

This lamination is crucial for minimizing eddy current losses, a type of energy loss caused by circulating currents induced in the core.

 

• Hysteresis Loss:

The electrical steel also exhibits low hysteresis loss, reducing energy lost due to the repeated magnetization and demagnetization of the core material as the AC current changes.

 

Power Transformer Core Key Benefits

• Efficient Voltage Transformation:

The iron core's ability to concentrate magnetic flux allows for efficient stepping up or stepping down of voltage levels in power systems.

 

• Reliable Operation:

By reducing energy losses and heat generation, the core contributes to the reliable and efficient operation of transformers.

 

• Structural Framework:

The core also serves as the structural framework for the transformer, influencing aspects like noise levels and overall performance.

 

Types of Transformer Core Structures

Classification by Structural Form

 

Core-Type Transformer

• Windings surround the core limbs
• Simple structure, easy maintenance
• Commonly used in medium and large power transformers

 

Shell-Type Transformer 

• Core surrounds the windings
• Higher mechanical strength
• Primarily used in special applications

 

Classification by Lamination Method

 

Stacked-Lamination Core 

• Traditional layered steel sheet construction
• Stepped joints reduce magnetic reluctance

 

Wound (Spiral) Core
Continuous coiled steel strip formation

• Seamless construction ensures uniform magnetic path
• Mainly used in distribution transformers

 

Power Transformer Iron Core specifications

Type	Grade	Width	Max Core Loss@P1.7T/50Hz	Lamination Factor(%)	Min Induction@B800
Common Type	23Q110	35-1200mm	1.10w/kg	97.2	1.82T
	23Q120		1.20w/kg	97.2	1.82T
	27Q120		1.20w/kg	97.5	1.82T
	30G120		1.20w/kg	98	1.82T
High Induction Type	B20P085	35-1200mm	0.85w/kg	97	1.86T
	B23P085		0.85w/kg	97.2	1.88T
	B23P090		0.90w/kg	97.2	1.88T
	B23P095		0.95w/kg	97.2	1.88T
	B23P100		1.00w/kg	97.2	1.88T
	B27P095		0.95w/kg	97.5	1.89T
	27QG100		1.00w/kg	97.5	1.89T
	B30P120		1.20w/kg	98	1.89T
Domain Refined High Induction Type(Laser)	B20R070	35-1200mm	0.70w/kg	97	1.86T
	B23R085		0.85w/kg	97.2	1.88T
	B27RK085		0.85w/kg	97.5	1.89T

Note: Customised sizes available.