Selection Based on Electrical Properties
When purchasing insulating paper, the primary consideration must be its electrical insulation properties-specifically, its voltage withstand capability, breakdown voltage, and insulation resistance. Different types of equipment impose varying requirements on insulation strength; for instance, high-voltage transformers and motor windings necessitate paper with superior high-voltage endurance and higher thermal ratings. Therefore, the appropriate specifications for insulating paper should be selected by carefully aligning them with the equipment's rated voltage and operating environment.
Physical Properties
During the processes of manufacturing and operation, insulating paper is required to possess a requisite level of mechanical strength and toughness. When making a selection, attention should be focused on the paper's tensile strength, elongation, thickness uniformity, and flexibility to ensure that it does not easily fracture or deform during winding, laminating, or pressing operations. Concurrently, the paper's thickness and density must strictly adhere to design specifications to guarantee the stability and safety of the insulation layer.
Environmental Adaptability
The thermal rating, water absorption rate, and moisture resistance of insulating paper constitute additional critical parameters. If an unsuitable choice is made for insulating paper intended for prolonged use in high-temperature or humid environments, it can lead to a degradation of insulation performance and potentially result in equipment failure. Consequently, during the procurement process, it is essential to verify the product's thermal rating and its suitability for oil-impregnated applications; furthermore, one should prioritize products from quality-certified and reputable suppliers to ensure the material's stability and reliability.
