Electrical Insulation Semiconductor Crepe Paper is a special paper product that combines semiconductor characteristics and insulation properties. It is made from plant fibers as the substrate, and is processed by semiconductor modification and wrinkling technology. Its core application is in the insulation structure of high-voltage/ultra high voltage power equipment, focusing on three core functions: electric field control, insulation protection, and structural adaptation. The specific functions are as follows:
1、 Regulating electric field distribution and optimizing insulation structure
This is its core function, addressing the pain points of uneven electric fields inside high-voltage equipment:
Equilibrium electric field strength
High voltage transformers, transformers, and other equipment are prone to electric field concentration near the winding ends and leads, which can cause partial discharge and damage insulation components. The resistivity of semiconductor wrinkled paper is in the semiconductor range (10 ⁴~10 ¹⁰Ω· m), which can form a continuous potential gradient with conductors and insulating parts, disperse the concentrated electric field, reduce local electric field strength, and avoid the risk of corona discharge and insulation breakdown.
Eliminate potential difference
Electrical Insulation Semiconductor Crepe Paper can eliminate the potential difference between different components and reduce partial discharge caused by uneven potential, improve the stability of the overall insulation system, and adapt to the harsh working conditions of 110kV and above ultra-high voltage equipment, between the winding and insulation cardboard and oil paper.
2、 Insulation protection and sealing buffer
Auxiliary insulation isolation
It has certain insulation properties and can be used as an auxiliary insulation material to isolate the conductor components and grounding metal parts inside the equipment, preventing short circuits; At the same time, it can withstand long-term immersion of insulation media such as transformer oil without performance degradation, and works in conjunction with oil paper insulation systems to improve equipment insulation reliability.
Sealed moisture-proof and buffering
The wrinkled structure gives it good flexibility and elasticity, which can tightly adhere to the surface of irregular components such as windings and leads during equipment assembly, fill gaps, and play a sealing role to prevent insulation oil leakage and moisture intrusion; At the same time, in the vibration generated by equipment operation, friction and collision between components can be buffered to avoid mechanical damage to the insulation layer.
3、 Adapt to the structure and process requirements of high-voltage equipment
Easy to process and shape
The wrinkle design of wrinkled paper makes it easy to stretch and wrap around complex parts such as winding ends and lead joints. It has strong adhesion and does not require complex cutting, making it suitable for the assembly needs of irregular structures in high-voltage equipment.
Compatible with insulation impregnation process
It has good oil absorption and can quickly and uniformly absorb insulating oil in the vacuum impregnation process of transformers, forming a dense oil paper insulation layer, further improving insulation performance and electrical strength.
