Premium Factory Oil-Immersed Transformer Core for Large Scale Use

Product Description

Product Description

 

I. Structure and Material

1. Material
   • The core is usually made of silicon steel sheets with high magnetic permeability. Silicon steel sheets have the characteristics of low iron loss and high magnetic permeability, which can effectively reduce eddy - current loss and hysteresis loss and improve the efficiency of the transformer.
   • The surface of the silicon steel sheets is generally insulated, such as being coated with insulating paint, to prevent short - circuiting between the sheets and further reduce eddy - current loss.
2. Structural Form
   • The core is generally divided into two structural forms: core - type and shell - type. In the core - type core, the windings surround the core, while in the shell - type core, the core surrounds the windings. Among oil - immersed transformers, the core - type structure is more common.
   • The core consists of core limbs and yokes. The core limbs are the parts where the windings are installed, and the yokes are the parts that connect the core limbs to form a closed magnetic circuit.

Good stacking performance




 

-High magnetic permeability: It can effectively concentrate and guide the magnetic field, improving energy conversion efficiency.



 

 

-Low loss: Using high - quality materials to reduce eddy current and hysteresis losses, saving energy.



 

-Stable structure: It can withstand the electromagnetic forces during operation, ensuring the stable operation of the transformer.

 

No.	Inspection Items	Standard Requirements	Model/Specification	Sampling Quantity	Measured Data
1	Seam	≤1.0mm	SP - 0 - 500	1	1.0mm
2	No - load Loss	PO ≤ 206 W	SP - 0 - 500	1	200W
3	Diagonal of Window	Difference ≤2.0mm	SP - 0 - 500	1	≤2.0mm
4	Insulation Resistance	Insulation Resistance of Iron Core to Ground ≥5MΩ	SP - 0 - 500	1	≥5MΩ
5	Core Column	Perpendicularity: ≤(2/1000)mm Curvature: ≤(1.5/1000)mm	SP - 0 - 500	1	≤(2/1000)mm ≤(1/1000)mm
6	Lamination Thickness	Main Lamination: 95 ±1mm Total Lamination Thickness: 214 ±1mm	SP - 0 - 500	1	95 214
7	Window Height and Width	Window Height: 300 ±1mm Window Width: 132 ±1mm	SP - 0 - 500	1	300 132
8	Clamping Piece Size	Strictly implement according to the technical agreement, and for those not marked, execute according to the national standard size tolerance (C roughness); Laminated Wood: 29 ±0.5mm Paperboard: 6 ±0.5mm	SP - 0 - 500	1	29 6
9	Standard Component Size	Strictly implement according to the technical agreement, and for those not marked, execute according to the national standard size tolerance (C roughness);	SP - 0 - 500	1	-

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