PSP 3055 SL Cable Paper

Description

PSP 3055 SL is manufactured from 100% unbleached cellulose with a calibrated calendaring process to deliver a stable thickness and dimensional uniformity. A special Thermally Upgraded version is available, where the thermal aging of the presspaper is delayed by introducing a small amount of a nitrogenous additive. This variant enhances long-term aging resistance in hot-wiring environments, while maintaining mechanical integrity.

PSP 3055 SL is commonly used for:

Core insulation
Layer insulation
Winding insulation on distribution transformers and capacitors
General electrical insulation applications requiring stable dielectric properties and reliable impregnation performance

Key performance attributes:

Density and porosity tuned for rapid impregnation
High absorption capacity to accept insulating impregnants
Elastic stability under thermal and mechanical stress
Available in a range of thicknesses to meet design specifications
Optional temperature-aging resistant formulations for challenging service conditions

Data table (common industry values)

Product name: PSP 3055
Item	Unit	Requirement Standard
Tolerance of Thickness	%	±10
Density	g/cm³	1.10-1.25
Tensile Strength	N/mm²	Thickness	0.1-0.15mm	0.15-0.20mm	0.2-0.25mm	0.3mm	0.3-0.55mm
		MD	≥70	≥80	≥90	≥90	≥90
		CD	≥35	≥35	≥35	≥35	≥35
		MD after folding	≥60	≥65	≥70	≥65	/
Electrical Strength	kV/mm	Thickness	0.1-0.15mm (in air)		0.2-0.4mm (in air)		0.5mm (in oil)
		before folding	≥12		≥11		≥35
		after folding	≥8		≥8		/
Moisture	%	6.0-10.0

Note:The product specifications provided are for reference purposes only. Please refer to the actual product for final specifications. We also offer various sizes and thicknesses to meet your specific needs. For further customization, please contact us.

Application scenarios

Core insulation in distribution transformers
Layer insulation within transformer windings
Winding insulation for transformer and capacitor assemblies
General electrical insulation systems requiring stable impregnation and dielectric performance

Testing standards and quality notes

Thickness tolerance per standard industry specifications for presspapers
Dielectric strength and insulation performance aligned with transformer grade materials
Impregnation compatibility tested with common insulating fluids
Packaging and handling tested for mechanical integrity during transport and storage

FAQs

Q: What thickness options are available for PSP 3055 SL?
A: Available in 0.05 to 0.50 mm, with additional intermediate thicknesses as required.
Q: Can PSP 3055 SL be supplied in tape form?
A: Yes, it can be cut into tapes and reels, and customized according to customer requirements.
Q: What is the thermal aging feature?
A: The Thermally Upgraded version delays thermal aging by adding a small quantity of a nitrogenous additive.
Q: What service conditions is PSP 3055 SL suitable for?
A: Suitable for core insulation, layer insulation, and winding insulation in distribution transformers and capacitors, with standard insulation class of 105°C.