Insulation Tape Used for Interlayer Insulation and Inter-Turn Insulation of Oil-Immersed Power Transformers
Insulating paper is an insulating material that is coated with special modified epoxy resin in a rhombic shape on electrical insulating paper. Widely used in interlayer insulation and turn-to-turn insulation of oil-immersed power transformers. In use, the coating layer begins to melt at a certain temperature during the drying of the coil, resulting in adhesion. Curing begins again as the temperature rises, allowing adjacent layers of the winding to be reliably bonded into a fixed unit.
The adhesive strength of the epoxy resin is sufficient to prevent the displacement of the layers of the winding during the short circuit, thereby ensuring the long-term mechanical and electrical properties of the insulation structure. The resin coating of the dispensing paper is in the form of dots, which ensures the immersion of the oil and the discharge of gas in the insulating material, effectively avoiding corona
and partial discharge, thereby ensuring the safety and reliability of the insulating structure.
The product curing conditions
First, in an environment of 90 ° C ± 5 ° C, after 3 hours, the temperature was raised to 125 ° C ± 5 ° C, and then completely cured under the conditions of 6 hours.
It should be stored in a dry and clean room at a temperature not higher than 25 °C. It should not be exposed to fire, heat or sunlight. The storage period is one year. After passing the storage period, it can be used after passing the test.