The description of SCB10-80kva three-phase dry-type transformer
With the rapid development of China, the power supply method of SCB10-80kva three-phase dry-type transformers has developed significantly. Because the SCB10-80kva three-phase dry-type transformer power supply method is suitable for large-capacity load power supply, and has less interference on communication lines which is widely used by passenger dedicated lines and heavy-load freight railways. Early SCB10-80kva three-phase dry-type transformers for Chinese railways mainly relied on imports, which were costly and inconvenient to maintain.
The features of SCB10-80kva three-phase dry-type transformer
SCB10-80kva three-phase dry-type transformer is safety, flame retardant, no pollution. Maintenance-free and low comprehensive operation cost. Good moisture resistance that can run under humidity and easy to install that can be installed in harsh environments. SCB10-80kva three-phase dry-type transformer is equipped with low loss, small partial discharge, low noise, strong heat dissipation ability; strong overload capacity, strong short circuit resistance with perfect temperature protection. The control system provides a reliable guarantee for the safe operation of the SCB10-80kva three-phase dry-type transformer.
SCB10-80kva three-phase dry-type transformer structure:
1. SCB10-80kva three-phase dry-type transformer Iron core:
Made of high-quality, high-permeability, low-loss, cold-rolled grain-oriented silicon steel sheet, 45-degree full-material seam stepped stack structure and the core is tied with high-strength insulating tape which effectively reduces no-load loss Wear current and iron core noise. The surface of the iron core is sealed with insulating resin to prevent moisture and rust.
2. SCB10-80kva three-phase dry-type transformer casting coil:
The coil of SCB10-80kva three-phase dry-type transformer is wound with copper foil and the interlayer insulation material is polyester film produced by DuPont. The vacuum-casted with epoxy resin with filler from Switzerland TOBLY and Italy BP2, glass fiber reinforced, and its expansion coefficient similar to copper conductor. It has good impact resistance, temperature change resistance, and crack resistance.
3. Foil pressure coil of SCB10-80kva three-phase dry-type transformer :
For low-voltage and high-current coils, the short-circuit stress is large when short-circuited. The number of low-voltage turns is small. The larger the low-voltage current is, the more prominent the imbalance problem is when the winding is used. The heat dissipation effect is not good. The low-voltage coil is wound with copper foil. First, there is no axial turns and axially wound propellers in the foil winding. The high and low voltage windings are balanced with ampere-turns, and the axial stress is small during a short circuit. It is easy to set up multilayer air ducts in the process. To solve the problem of heat dissipation, the lead wire is welded with argon gas on the foil winding machine with high accuracy and low welding resistance.
4.SCB10-80kva three-phase dry-type transformer with shell:
The SCB10-80kva three-phase dry-type transformer can be configured with different protection levels according to different operating environments. The protection level is a non-shell product. The IP shell can prevent the entry of solid substances larger than 12mm. SCB10-80kva three-phase dry-type transformer is suitable for indoor installation and use. In addition to the characteristics of the IP20 housing, it can prevent the inflow of water drops within an angle of 60 ° C from the vertical line, which is suitable for outdoor installation. The material of the IP20 housing generally has a steel plate profile structure.