DDP insulation paper is a high-performance insulation material widely used in power transformers, power distribution equipment and new energy fields. Its unique diamond-shaped glue point design and excellent insulation performance make it occupy an important position in the field of electrical insulation.
The thickness of DDP is usually between 0.08mm and 0.45mm, and the specific thickness depends on the application requirements and production process of the product.
Common thicknesses include 0.13mm, 0.18mm, and 0.25mm.
The color of DDP is usually the natural color of wood pulp, that is, light yellow or light brown. Some products may use special glue colors, such as rose red or light red, to increase the recognition and aesthetics of the product.
The choice of color usually does not affect the electrical and insulation properties of the product, but may have a certain impact on the appearance and use environment of the product.
The size of DDP is usually flexible and can be customized according to customer needs. The common size is generally 1000mm±20mm. Products of different brands or production batches may have slight differences in size, so the specific size requirements must be clarified when purchasing.
The glue points of DDP are distributed in a diamond shape. This design not only improves the insulation performance, but also enhances the mechanical strength of the material.
The glue point density (i.e. the number of glue points per unit area) is an important parameter affecting the performance of DDP. High-density glue points provide better insulation performance and bonding strength, but the cost is also relatively high.
DDP is mainly used for inter-turn insulation and inter-layer insulation of oil-immersed power transformers and transformer coils. Its special design makes the coating layer melt at a certain temperature during the coil drying process and produce an adhesion effect. And then the coating layer solidifies as the temperature rises, so that the adjacent layers of the winding are reliably bonded into a fixed unit.
Heat resistance: DDP has excellent heat resistance. The heat resistance grade can reach E class or F class, and can be used in high temperature environments above 155℃.
Mechanical strength: Its bonding strength, tensile strength and breakdown voltage must also meet the requirements of specific applications. For example, the bonding strength≥380kpa, the tensile strength≥70n/mm longitudinally and ≥30n/mm transversely, and the breakdown voltage ≥800v.
Insulation performance: Choose the appropriate thickness according to the voltage level. Thick DDP should be selected for high voltage applications.
When choosing DDP, cost-effectiveness is also an important consideration. DDP of different thicknesses and specifications has different prices. Generally, the thicker the thickness, the higher the cost. Therefore, according to the needs of specific applications, choosing the right thickness can control costs while ensuring performance.
Develop higher-performance DDP, such as new materials with low dielectric loss, high heat resistance and high mechanical strength. Promote environmentally friendly materials to reduce the impact on the environment.
Integrate intelligent control systems to realize intelligent manufacturing and optimized operation of DDP. Use big data and artificial intelligence technology to optimize production processes and improve production efficiency and product quality.
Promote green manufacturing processes and reduce energy consumption and emissions during production. Improve the recyclability and reuse of materials to support the circular economy.
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