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Sc (B) 9/10/11/12/13 Epoxy Resin Cast 35 Kv Od Dry-Type Transformer Power Three Phase Step up Chongqing 500kVA Voltage Electrical Power Supply
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Sc (B) 9/10/11/12/13 Epoxy Resin Cast 35 Kv Od Dry-Type Transformer Power Three Phase Step up Chongqing 500kVA Voltage Electrical Power Supply
Due to the fact that the coils of the resin insulated dry-type transformer are encapsulated with epoxy resin, it is non-flammable, fireproof, explosion-proof, maintenance-free, pollution-free, compact in size, and can be directly installed in the load. The scientific and reasonable design and casting technology enable the product to have a low discharge capacity, low noise, strong heat dissipation, and can operate for a long time under air-cooled conditions at 140% of the rated load. In addition, this product is equipped with an intelligent temperature controller, featuring fault alarm, over-temperature alarm, over-temperature trip and black box. It can be connected to a computer via the RS485 series interface to achieve centralized monitoring.
Iron core
The core is made of imported cold-rolled silicon steel sheets and features an inclined joint structure.The core limbs are bound by F-class unidirectional non-tile tape. Core surface with epoxy resin encapsulation,reduces the noise in no-load current and iron core. Fixture and fasteners with special surface treatment, further improve the quality of the appearance of the product.
High-voltage winding
The high-voltage winding is vacuum cast with epoxy resin filled in, which can greatly reduce partial discharge and enhance the electrical performance of the coil. Both the interior and exterior of the winding are covered with glass fiber grating, which enhances the mechanical strength of the coil and the short-circuit withstand capacity of the product. The coil will not split forever.
low-voltage winding
The low-voltage winding adopts a foil structure, solving the axial problem Angle Wind and evenly distribute the ampere-turns of the winding. Meanwhile, the coil adopts axial cooling tubes to improve heat dissipation. Between the winding layers, DMD resin pre-impregnated fabric is applied to make it solidify and take shape as a whole.
Manufacturing process
The coil is wound on a high-precision winding machine. The low-voltage winding adopts a foil winding structure. Larger capacity transformers are equipped with ventilation pipes, which are vacuum-dried, cast and solidified folk windings. All processes are carried out under strict supervision in accordance with technical requirements and may be subject to appropriate regulation. The precise manufacturing of castings ensures that there are no bubbles or cavities in the coils, and ultimately achieves high-quality operation of the transformer.
Temperature control and air cooling system
It adopts cross-flow top-blowing fans, featuring low noise, high air pressure and good appearance. It enhances the safety and reliability of transformer operation.
Protective shell and lead-out busbar
The casing further protects the transformer. For user options, the protection levels are IP20, IP23, etc. The shell materials include cold-rolled material plates, stainless steel material plates, etc. The low-voltage outgoing line adopts the standard outgoing line bus. Both side outgoing lines and top outgoing lines are acceptable, or special outgoing line modes can be designed for users.
Frequently Asked Questions
Q1: What are the main performance advantages of the SC (B) series dry-type transformer?
A: Since the coils are completely encapsulated with epoxy resin, this dry-type transformer is non-flammable, fireproof, explosion-proof, maintenance-free, and pollution-free. It features a compact design allowing direct installation in the load center safely.
Q2: How does the transformer manage heat dissipation and overload capability?
A: It incorporates a highly efficient cross-flow top-blowing fan system characterized by low noise and high air pressure. This advanced layout allows the system to sustain stable performance for extended periods up to 140% of its rated load under forced air-cooled conditions.
Q3: What structure design is implemented for the iron core to ensure low noise levels?
A: The iron core is built utilizing premium cold-rolled silicon steel sheets configured with an inclined joint structure. Furthermore, the core surface undergoes full epoxy resin encapsulation to significantly suppress noise levels during no-load current operations.
Q4: What makes the high-voltage and low-voltage windings highly reliable?
A: The high-voltage winding is vacuum cast with filled epoxy resin to minimize partial discharge and prevent splitting. The low-voltage winding utilizes a foil structure layout integrated with axial cooling tubes to optimize ampere-turn distribution and thermal dissipation.
Q5: Can the SC (B) dry-type transformer be monitored remotely?
A: Yes, it is equipped with an intelligent temperature controller featuring fault protection, over-temperature alarms, and automatic trips. It also features an integrated RS485 series communication port enabling centralized monitoring through external computer systems.
Q6: What outer protective housing options are supported for different deployment environments?
A: Protective shells can be specified with configurations such as IP20 or IP23 enclosures. Material selection includes cold-rolled steel or premium stainless steel plates. Outgoing line connections are fully customizable to support standard layout, side-exit, or top-exit configurations.
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