SCR10 series resin-insulated winding dry-type power transformers are currently manufactured by existing pouring processes at home and abroad. High-voltage, large-capacity dry-type transformers may generate stress, minor cracks, and resin impregnation within their coils. The winding dry-type transformers can fully make up for the shortcomings of pouring dry-type transformers. They have the advantages of more energy-saving mechanical strength and extremely high electrical strength, strong resistance to sudden short-circuit, never cracking coils, 100% reliable operation, explosion-proof, high overload capacity, short manufacturing cycle, and excellent thermal shock stability. They are especially suitable for dry-type transformers in high-voltage, large-capacity, and flammable areas.
SC10, SCB10 series resin casting insulated dry-type power transformers The casting coils of this series of products with short glass wire as filler are segmented cylinders, and the coils are equipped with axial airways to improve heat dissipation conditions. The scientific pouring molding process can ensure that the resin fully penetrates between turns, layers and sections to ensure the electrical insulation strength of the product and less local load (≤ 5pc).
How to prevent the cracking of the resin castable body, control the generation of residual bubbles in the castable body, and reduce the partial discharge to the minimum limit has always been a major issue for dry transformer manufacturers at home and abroad, and is a key manufacturing technology for resin castable dry-type transformers. The company has successfully solved this cutting-edge problem through repeated production practices and frequent physical and chemical tests, so that the company’s thin insulating vacuum casting products with short glass filaments as fillers have increased their tensile strength to 170N/mm2 and flexural strength to 220N/mm2, which has improved the mechanical properties of the resin cured body as a whole.
The unique features of the company’s SC (B) 10 series resin casting thin insulation dry product manufacturing technology are: 1. The resin thickness of the encapsulation layer is reduced, and the heat dissipation capacity of the coil is enhanced.
2. The coil is reinforced with glass felt, which enhances the mechanical strength of the coil, improves the product’s ability to resist sudden short circuit, and successfully solves the problem of cracking of the pouring body.
3. The coil adopts a special process, which greatly reduces the amount of partial discharge inside the coil and increases the electrical strength of the coil.
4. The low-voltage coil adopts a foil structure, which reduces the magnetic leakage at the end and improves the product’s ability to resist sudden short circuits.