Transformer Oil Duct Spacers Superior Winding Support：
Our oil duct curtain is engineered using high-grade Diamond Dotted Presspaper (DDP) integrated with high-density pressboard strips (spacers).
Designed specifically for oil-immersed power and distribution transformers to ensure optimal heat dissipation and structural integrity.
 * 100% Sulfate Wood Pulp Base Paper
 * Diamond-shaped Epoxy Resin Dots
 * Enhanced Oil Impregnation Channels

Transformer Oil Duct Strip Curtain Application：
1. Oil-Immersed Power & Distribution Transformers: Placed between low-voltage and high-voltage winding coils to form critical vertical or radial cooling ducts.
2. Instrument Transformers & Reactors: Provides stable layer-to-layer insulation and structural support under constant electrical stress.
3. High-Voltage Traction Transformers: Used in locomotive power systems to withstand frequent thermal cycles and mechanical vibrations.
4. Special Industrial Transformers: Applied in furnace and rectifier units requiring high overload capacity and reliable heat dissipation.
 

Thickness	mm	0.08	0.13	0.17	0.20	0.25	0.30
Thickness Tolerance	%	6.5
Density	g/cm3	≥0.85
Tensile Strength	MD	KN/m	7.5
	CD		3.7
Tear Strength	m ·N	500	1000	1500	2000
Dielectric Breakdow n	Kv	0.6	0.9	1.2	2.2	2.75	3.3
Aqueous Extract	_	6.8~8.5
Bond Strength	Kpa	450
Ash Content	%	1.0

1.Q: Are you trading company or manufacturer ? 

A: We are a manufacturer, We have more than 36 years experience in producing electrical insulation material.

2.Q: Where is your factory located? How can I visit there? 

A: Our factory is located in Xuchang,Henan provience.

3.Q: Which certification do you have?

A: The plant has passed the certificate of ISO 9001 quality system certification;
The products have passed ROHS test.

4.Q: Can i get a samples for free?

A: Of course we can sent you a sample  for free, customers just need to pay a litter shipping change.

5.Q: How long is the delivery time?

A: Generally it is 5-15 days if polyimide film price is  in stock, or it is 15-30 days.