Resin-insulated dry-type transformers are our company’s introduction of foreign advanced technology and independently developed SC9, SCB9 series and SC1O, SCB1O series of thin-film insulation dry-type transformers with fillers. Because the coil is encapsulated by epoxy resin,resin-insulated dry-type transformers is flame-resistant, fire-proof and explosion-proof maintenance-free, pollution-free, small size, can be directly installed in the load center. At the same time, the scientific and reasonable design and casting process make the product have a smaller partial discharge, low noise and strong heat dissipation capacity. Resin-insulated dry-type transformers can run for a long time at 140% of the rated load under forced air cooling. Alarm, over-temperature alarm, over-temperature trip and black brake function, and connected to the computer through interface, can be centrally monitored and controlled.
Because our company’s dry-type transformers have the above characteristics, they are widely used in power transmission and transformation systems. such as hotels, airports, high-rise buildings, commercial centers, residential quarters and other important places, as well as subways, smelting power plants, ships, offshore drilling platforms and other environments .
The core of resin-insulated dry-type transformers
The core is made of imported high-quality cold-rolled silicon steel sheet, the core is made of imported high-quality cold-rolled silicon steel sheet, with a full miter end structure, the core is bound with F-level weft-free adhesive tape, and the core surface is encapsulated with epoxy resin to reduce no-load loss no-load current and core noise. The clips and fasteners are treated with a special surface, which further improves the appearance quality of the product.
High voltage winding of resin-insulated dry-type transformers
High-voltage windings High-voltage windings are filled with vacuum resin with a filler ring, which greatly reduces the amount of partial discharge and improves the electrical strength of the coil. The inner and outer walls of the winding are filled with glass fiber grid plates, which enhances the mechanical strength of the coil and improves the product’s anti-burst. The ability to short-circuit, the coil will never crack.
Low voltage winding of resin-insulated dry-type transformers
The low voltage winding adopts a foil structure which solves the problem of the axial helix angle when using wire winding to make the ampere turn more balanced. At the same time, the coil uses an axial cooling air duct to enhance the heat dissipation ability.
Manufacturing process of resin-insulated dry-type transformers
The coil is wound on a high-precision winding machine. The low-voltage winding uses a foil winding structure. When the resin-insulated dry-type transformers has a large capacity, it is dried after the air duct is wound. The entire casting and curing process is performed according to the process requirements. All processes are required. There is strict monitoring, and the precise manufacturing process of the pouring of the adjustment port is carried out according to the situation, so that the coil is free of air bubbles and cavities, so that the finished transformer can achieve high-quality operation results.
Temperature control system and air cooling system of resin-insulated dry-type transformers
A cross-flow top-blown cooling fan is adopted. The cooling fan has the characteristics of low noise, high wind pressure and beautiful appearance, which enhances the overload capacity of the transformer. Temperature control adopts intelligent temperature controller to improve the safety and reliability of transformer operation.
Protective housing and outgoing busbar of resin-insulated dry-type transformers
The protective shell protects the transformer for further safety. The protection grades are IPZO, IP23, etc. The shell materials are cold-rolled steel plates, stainless steel plates, etc. For users to choose the standard bus bar discharge line for low-voltage outlets. Users design special outlets.
According to different interface forms, conventional outlets, standard closed busbars and standard side outlets can be manufactured, and special outlet methods can be designed according to user requirements.