Diamond dotted insulation paper is made of imported pulp base paper, pure epoxy resin, and the most advanced foreign formula technology. More than 95% of the ddp paper produced by ZTelec Group is used for export, which is the largest domestic DDP production enterprise. Necessity of the new process: except for oil immersed S9 and S11 transformers, diamond dotted paper is more suitable for new technology amorphous alloy transformers and transformer copper foil aluminum foil-foil winding process. In these two kinds of advanced technology, rhomboid paper (diamond dotted paper) is an indispensable necessity. But at the same time, the new process has greatly improved the quality of diamond dotted paper. In this particular process, the adhesive strength of the dotting paper is not up to standard, which will cause particularly serious consequences.
Principle and function: diamond dotted paper with perfect formula should complete the complicated process of one-time melting and permanent curing under the requirements of the existing coil drying process, so as to ensure that the coil is bonded into an unbreakable whole, and also ensure that the gap between diamond dotted paper is clean and convenient for smooth oil removal. At the same time, the diamond dotted paper should withstand the soaking effect and the thermal aging effect, always keep the impurities and harmful components from falling off and polluting the transformer oil in the hot oil environment. Transformer diamond dotted paper is also not easy to aging and reduce the insulation performance, and maintain the same service life as the equipment. All of these put forward particularly high requirements for the quality of diamond dotted paper.
Reliability: although diamond dotted paper occupies very little value in the transformer, it can not be replaced in the transformer, the importance of the length of its life can be seen, and the damage caused by failure can not be underestimated. In this sense, the diamond dotted paper market is not a shortage of low-cost alternatives, but an urgent need for high-end products of higher quality and reliability. DDP paper is different from low quality low price toxic phenolic dotted paper. Due to the physical characteristics of phenolic dotting paper, it can not achieve the minimum bonding effect, and can not complete the most fundamental chemical reaction of one-time dissolution and solidification, which completely does not meet the quality requirements.
Economy: diamond dotted paper do not modify the original drying process, replace and eliminate the immersion process, so as to avoid its poison, time consuming, power consumption and other shortcomings. Under the premise that the price of diamond dotted paper has been greatly reduced, it has become a standard process with high efficiency, low cost, reliability and economy.
