Diamond Dotted Insulation Paper
Diamond Dotted Insulation Paper( DDP) is made of electrical insulation paper with Diamond-shape epoxy resin dotted in both sides. The epoxy resin used in DDP contains a kind of incubative hardener material, it is a dry ad crisp material at normal temperature(below 35degree)
This product has good dielectric properties and good machenical properties after being heat-solidification. It can be used as coils and between layers of oil immerged power and distribution transformers.
This product has good dielectric properties and good mechanical properties after heat solidification. It is to be used in oil-immersed transformers for the insulation between of coils and between layers of oil immerged power distribution transformers.
The Diamond Dotted Paper to be used in oil immersed transformers, for coil insulation. On the insulation layer, there is a layer dotted epoxy resin that will be changed with high temperature change that is to be called as felt. It is suitable for turn-to-turn insulation of coil wires on oil-immersed power transformers and suitable for layer insulation of coils on distribution transformers.
1).Density : 0.85~1.10 g/cm3
2). Width: 800mm, 960mm, 1000mm, 1050mm, 1200mm, 1300mm or customized.
3).Thickness:0.08mm, 0.13mm, 0.15mm, 0.18mm, 0.20mm, 0.25mm, 0.30mm, 0.38mm, 0.45mm, 0.50mm or customized.
4). good dielectric properties and good mechanical properties after heat solidification
5). Color: nature, brown
It is to be used in oil-immersed transformers for the insulation between coils. On the insulation layer, there is a layer dotted epoxy resin that will be changed with high temperature change that is to be called as felt.
In the process of coil desiccation, the coated epoxy-resin would be melted in a certain temperature and become adhesive. With the temperature increased, the melted resin would cure to C-stage, and firmly adhere each adjoining layer of the coil, thus forming a winding section. If a short circuit occurs in the coil, the resin bond strength would sufficiently prevent the displacement of each winding layer, which ensures the long-term mechanical and physical properties of the insulation structure. As the resin coating distributes in a diamond-dotted pattern, little quantity of the resin would soak into the insulating paper during the melting and curing process, which ensures the elimination of air content in the insulating paper and guarantees the soakage of oil, minimizing the damages of corona and partial discharge.
Insulation class A (105 °C) according to according to IEC 60641-3-2:200
Kraft paper, 100% sulphate pulp
High purity and mechanical strength
Baked enamel coating: Epoxy resin , rhombic, one or both sides
Good compatibility with liquid dielectic after the baked enamel coating has hardened.
Care should be taken that the that the layers to be baked remain closely pressed against each other during baking time
Welcome to contact Haotai, which is one of best diamond dotted insulation paper manufacturers and suppliers in China, you can also get diamond dotted insulation paper free sample from our factory.