6-10kV-SCB resin insulated dry-type transformer
Short Description:
Resin insulated dry-type transformers are developed by our company through the introduction of excellent foreign technology. The SC (B) 10, SC (B) 11, SC (B) 12, and SC (B) 13 series of dry-type transformers with filler thin insulation have been developed. Due to the coil being encapsulated by epoxy resin, they are flame retardant, fire-resistant, explosion-proof, maintenance free, pollution-free, small in size, and can be directly installed in load centers. At the same time, the scientifically reasonable design and pouring process result in smaller partial discharge, low noise, and strong heat dissipation capacity of the product. It can operate for a long time under 140% rated load under forced air cooling conditions, and is equipped with an intelligent temperature controller with fault alarm, overtemperature alarm, overtemperature trip, and black gate functions. It is connected to the computer through RS485 serial interface for centralized monitoring and control.
Product details
1 Overview
1.1 Product Features
Resin insulated dry-type transformers are developed by our company through the introduction of excellent foreign technology. The SC (B) 10, SC (B) 11, SC (B) 12, and SC (B) 13 series of dry-type transformers with filler thin insulation have been developed. Due to the coil being encapsulated by epoxy resin, they are flame retardant, fire-resistant, explosion-proof, maintenance free, pollution-free, small in size, and can be directly installed in load centers. At the same time, the scientifically reasonable design and pouring process result in smaller partial discharge, low noise, and strong heat dissipation capacity of the product. It can operate for a long time under 140% rated load under forced air cooling conditions, and is equipped with an intelligent temperature controller with fault alarm, overtemperature alarm, overtemperature trip, and black gate functions. It is connected to the computer through RS485 serial interface for centralized monitoring and control. Due to the above characteristics of our company's dry-type transformers, they are widely used in power transmission and transformation systems, such as important places like hotels, restaurants, airports, high-rise buildings, commercial centers, residential communities, as well as harsh environments like subways, smelting power plants, ships, and offshore drilling platforms.
1.2 Iron Core
The iron core is made of cold-rolled silicon steel sheets, with a fully inclined joint structure. The core columns are tied with F-grade non-woven adhesive tape. The surface of the iron core is sealed with insulating resin paint to prevent moisture and rust, reducing no-load losses, no-load current, and iron core noise. The surface treatment of the clamps and fasteners further improves the appearance quality of the product.
1.3 High voltage winding
The high-voltage winding is filled with epoxy resin vacuum pressure casting, which reduces local discharge and improves the electrical strength of the coil. The inner and outer walls of the winding are filled with glass fiber mesh plates, which enhances the mechanical strength of the coil and improves the product's ability to resist sudden short circuits without cracking.
1.4 Low voltage winding
The low-voltage winding adopts a foil structure, which solves the problem of axial helix angle when using wire winding, making the turns more balanced. At the same time, the coil adopts an axial cooling air duct, enhancing the heat dissipation ability. DMD epoxy resin prepreg is used between the winding layers, and the whole is cured and formed.
1.5 Manufacturing Process
The coil is wound on a high-precision winding machine, and the low-voltage winding adopts a foil winding structure. When the transformer capacity is large, there is a ventilation duct. After the winding is completed, vacuum drying is carried out, and the entire pouring and curing process is operated according to the process requirements. The process needs to be strictly monitored and adjusted according to the situation. The precision manufacturing process of pouring ensures that the coil has no bubbles or voids, resulting in high-quality transformers.
1.6 Temperature control system and air cooling system
The cross flow top blowing cooling fan is adopted, which has the characteristics of low noise, high air pressure, and beautiful appearance, enhancing the overload capacity of the transformer. The temperature control adopts an intelligent temperature controller, which improves the safety and reliability of transformer operation.
1.7 Protection shell and outgoing busbar
The protective shell provides further safety protection for the transformer, with protection levels of IP20, IP23, etc. The shell material includes cold-rolled steel plate, stainless steel plate, etc. for users to choose from.
Low voltage outgoing lines use standard bus bars for outgoing lines, both side and top outgoing lines can be used, and outgoing lines can also be designed for users.
1.8 Transformer outgoing line method
Conventional outgoing lines, standard enclosed busbars, and standard side outgoing lines can be manufactured according to different interface forms, and outgoing methods can also be designed according to user requirements.
