Three Phase Dry Type Rectifier Dry-type Transformer
Product Description
Description about Three Phase Dry Type Rectifier Dry-type Transformers
Rectifier Dry-type Transformers are designed for scenarios where AC power needs to be converted into DC power. They combine the high safety of dry-type transformers with the efficient power conversion characteristics of rectifier systems. They are mainly used in places with strict requirements on fire protection and environmental protection, such as subways, electrolytic plating, and industrial DC power supplies.
Feature about Rectifier Dry-type Transformer
Safety and explosion-proof
Fireproof level: Meets the highest flame retardant standards, suitable for flammable and explosive environments such as subway tunnels and chemical workshops;
Zero leakage risk: Oil-free design completely avoids leakage pollution problems of oil-immersed rectifier transformers (;
High-efficiency rectification adaptability
Low impedance design: Suppresses voltage mutations during rectification and reduces voltage fluctuations on the DC side;
Harmonic resistance enhancement: The winding adopts foil structure + segmented shielding to withstand high-order harmonics generated by 12/24 pulse rectification;
Compact integration
Rectifier-transformer integration: Some solutions integrate rectifier cabinets with dry transformers (such as subway traction stations), saving more than 40% of floor space.
Modular design: Supports N+1 redundant parallel operation, adapting to disaster recovery scenarios such as data center 240V DC systems.
Description about Three Phase Dry Type Voltage Power Distribution Transformer
A dry type transformer, also known as an air-cooled transformer, is a type of transformer that utilizes air or gas instead of liquid (such as oil) for insulation and cooling purposes. This transformer design does not immerse its core and windings in insulating oil, making it distinct from oil-filled transformers.
Types of Dry Type Transformers:
- Cast Resin Dry Type Transformer (CRT):
- Uses epoxy resin to encapsulate windings, protecting them from moisture, dust, corrosion, and other environmental factors.
- Suitable for high humidity areas, indoor installations, and fire-risk areas due to its non-hygroscopic, non-inflammable, and maintenance-free nature.
- Available in ratings from 25 kVA to 12,500 kVA, with an insulation class of F (90°C temperature rise).
- Vacuum Pressure Impregnated Transformer (VPI):
- Impregnates windings with class H polyester resin under vacuum and pressure, eliminating air gaps or voids in the insulation.
- Enhances mechanical strength, dielectric strength, and thermal stability.
- Suitable for outdoor installations, seismic events, and temperature fluctuations due to its robust construction, moisture-resistant enclosure, and low thermal expansion coefficient.
Pearl Electric, an experienced transformer manufacturer since 1958, design and produce various cast resin dry type transformer for different application include rectification transformer, marine/offshore oil platform transformer, rectification traction transformer, Transformer for electrified railway station, Rectification excitation transformer etc.
Technical Datasheet for Cast Resin Dry Type Transformer
| Items |
Item |
| Origin |
China |
| Manufacturer |
Pearl Electric Co., Ltd. |
| Brand |
Pearl Electric |
| Production Descriptions |
Three Phase Dry Type Voltage Power Distribution Transformer |
| Reference standards |
IEC 60076-11 |
| Capacity |
3300kVA |
| Frequency |
60 / 50Hz |
| Voltage (HV) |
33KV or customized |
| Voltage (LV) |
2KV or customized |
| Impedance |
4%-6% |
| Connections (Vector Group) |
Dyn11 |
| Tapping Range |
+ 2 x 2.5% , - 2 x 2.5% |
| Core materials |
Silicon Steel |
| Winding materials |
Aluminum or copper |
| Lightning Impulse Withstand Voltage |
IEC standard |
| AC withstand voltage |
IEC standard |
| Temperature Rise class |
H-class |
| Temperature Rise |
50/55K |
| Cooling method |
AN/AF |
| Temperature |
50 |
Certifications
Product Line
Company Profile
Pearl Electric, located in Guangzhou, China, was founded in 1958 and is an outstanding power equipment supplier in the transmission and distribution industry. With a land area of 100000 square meters, over 600 employees, and an annual turnover of over USD 142 million, we currently have over 200000 transformers in operation, which have been sold to Southeast Asia, Central Asia, Africa, Europe, North America and other regions.
Pearl Electric is devoted to providing safe, highly efficient and intelligent power transformation and distribution solution, focusing on R&D, manufacturing, sales and service as below:
FAQ:
1.Q: Are you manufacturer?
A: Yes, we are manufacturer. Our factory is in Guangzhou City, Guangdong Province.
2.Q: Do you have any Certificate?
A: Yes. Our transformer has awarded CE, UL, KEMA certificate. If you need any other Certificate, we can help you to apply it.
3.Q: How can I pay you?
A: Pay by T/T and L/C is acceptable.
4.Q: What about the production?
A: In general, it take 4~6weeks and it depend on the different style.
5. Q:How contact us to get quick inquiry ? Follow us in our company website.
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