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Dogbones

Key words:

Oil-Immersed Transformer Insulating Materials | Mutual Inductor Insulation Materials

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Product Description

Glass fiber braces, also known as dogbones, pulling strips, or ventilation strips, are pultrusion profiles made from alkali-free glass fiber soaked thermosetting resin. They offer a variety of benefits, including high mechanical strength, outstanding electrical performance, flame retardant, corrosion resistance, and arc resistance. It is primarily utilized for interlayer ventilation and cooling in dry-type transformers as well as reactors and wave trappers.
Characteristics of insulating dogbones:
1. High mechanical strength. Pultruded products, with up to 70% of unidirectional fibers serving as reinforcement materials, exhibit high tensile, flexural, and compressive strengths.
2. Excellent electrical insulating property. Due to its small air gaps, pultruded products exhibit excellent electrical insulating properties.
3. The dimensions are precise and stable. The thermal expansion coefficient of pultruded products is lower than most plastics and steel, and they are non-moisture absorbing, thereby ensuring stable dimensions.
4. Chemical corrosion resistance. The pultruded products adopt inorganic fiber, and the binders used in them, such as unsaturated polyester or epoxy resin, also possess excellent chemical corrosion resistance. Therefore, pultruded products are also excellent materials withstanding chemical corrosion.
5. Exhibiting excellent processing property, having a wide range of applications, and allowing customers to freely design the sectional dimensions. It can be made with a single-pass according to user requirements, ensuring accurate dimensions for products with different cross-sectional shapes and lengths, minimal tolerance, and a smooth surface finish. This process thus eliminates the need for mechanical processing, allowing for direct application and providing great convenience.
F-grade fiberglass, insulating dogbones, ventilation strips, and pulling strips.

Zhongling insulation material