Transformer insulation crepe paper introduction

Manufacturing process, performance characteristics and applications of transformer insulation crepe paper

 

 

1. Material and manufacturing process

 

Material: Transformer insulation crepe paper is mainly made of unbleached sulfate softwood pulp.

Manufacturing process: The raw material is made by free beating, without sizing or adding fillers, and the crepe process is applied on a fourdrinier papermaking machine.

 

2. Performance characteristics

 

High temperature resistance: It can withstand operation in high temperature environment to ensure the normal operation of transformer conversion of electric energy.

Water breakdown resistance: It can effectively prevent water from entering the transformer and ensure the stability of the transformer.

Insulation performance: It has good insulation performance and can effectively isolate the interconnection of electrical equipment to ensure the smooth transmission of electrical performance.

Corrosion resistance: It can withstand corrosion from chemical properties such as acid and alkali to ensure normal service life.

Mechanical properties: The paper is tough and uniform, with high tensile strength, folding resistance, tear strength and high elongation.

 

3. Application

 

Insulation effect: Transformer insulation crepe paper is a very excellent insulating material that can be used for the insulation of various electrical equipment, such as transformers, transmission lines, etc.

Filling function: used for filling electrical equipment, such as partitions, compartments, etc., which can effectively isolate the heat source inside the equipment and prevent excessive heat accumulation.

Protective function: It can effectively protect the internal electrical components of the transformer and ensure its normal operation. Corrugated paper is often used for transformer wrapping insulation, such as insulation wrapping of winding heads, leads, and electrostatic rings.

 

4. Purchase precautions

 

Specifications: Choose appropriate specifications according to actual needs, such as thickness, width, etc.

Quality: Choose a manufacturer with good reputation and guaranteed quality to ensure product quality.

Price: Choose a product with a reasonable price while ensuring quality.

 

5. Technical Data of Transformer insulation crepe paper introduction

 

Standard: JB/T 10441.3-2004
No.	Properties		Unit	Base Paper Thickness
				0.05mm		0.075mm		0.13mm
1	Thickness of Crepe Paper		mm	0.35±0.05		0.38±0.08		0.70-0.90
2	Ash Content		%	≤0.7		≤0.7		≤0.8
3	Moisture Content		%	≤7.0		≤7.0		≤8.0
4	Water Extraction PH		-	6.0-8.0
5	Oil Contamination		%	<0.1
6	Tensile Strength	MD	N	30		40		50
		CD	N	20		30		40
7	Oil Absorption Height	MD	mm/10min	≥7.0
			mm/60min	≥30.0
		CD	mm/10min	≥20.0
			mm/60min	≥50.0
8	Crepe Ratio		%	50
9	Power Frequency Breakdown Voltage		V/layer	≥950	≥1000		≥1000
10	Conductivity		ms/m	-	-		≤10
11	Appearance density		g/m²	60±10%	110±10%		120-150

 

In summary, transformer insulation corrugated paper is an insulating material with many excellent properties and application value. When purchasing and using it, you need to fully understand its performance characteristics and application range, and choose appropriate specifications and reliable quality products according to actual needs.