Diamond dotted paper DDP insulation paper is a kind of insulating material coated with special modified epoxy resin in a diamond pattern on electrical insulation paper. The epoxy resin of this material contains a latent curing agent. It is a non-stick dry material at room temperature (below 35 ° C). When it is heated to a certain temperature, it starts to melt and produces an adhesive effect.
As the temperature rises, it begins to cure again, so that the adjacent layers of the winding are reliably bonded into a fixed unit. The adhesive strength of epoxy resin is sufficient to prevent the displacement of the various layers of the winding during a short circuit, thereby ensuring the long-term mechanical and electrical performance of the insulating structure. Because the resin coating of Lingge glued insulating paper is dot-shaped, it guarantees the immersion of oil and the exhaust of gas in the insulating material, effectively avoids corona and partial discharge, thereby ensuring the safety and reliability of the insulating structure.
Diamond dotted paper DDP is suitable for the turn insulation of the coil wires of oil-immersed power transformers and the interlayer insulation of distribution transformer coils.
