32MVA 20-6-6KV Three Winding Power transformer
Product Description
What is three winding power transformer?
Three winding power transformer, commonly known as a three-phase three-winding transformer, is a specific type of transformer that features three separate windings per phase.
Structure:
- Each phase of the transformer has three windings: a high-voltage (HV) winding, a medium-voltage (MV) winding, and a low-voltage (LV) winding.
- All three windings are typically wound on the same iron core column. For insulation purposes, the HV winding is usually placed on the outermost layer, while the MV and LV windings are located on the inner layers.
Applications:
Three-winding transformers are widely used in power systems, especially in power plants and substations, where they can efficiently handle three different voltage levels.
They are economically advantageous compared to using two separate transformers, as they occupy less space and are easier to maintain and manage
Advantages:
They offer high efficiency and low losses, translating to energy savings.
Their reliability is high, with longer service lives and stable operation even in harsh environments.
They provide flexibility in voltage transformation and power distribution.
Technical Datasheet
Technical datasheet for 32MVA 20/6/6 KV Power Transformer:
| Technical Data |
Specification |
| Standards |
IEC standard |
| Type designation |
PEO-SZ-32MVA 20/6/6KV |
| Manufacturer, origin |
Pearl Electric, China |
| Type of transformer (single-phase, three-phase) |
Three-phase |
| Type of transformer Insulation (oil-filled, dry) |
oil-filled |
| Rated capacity of winding, kVA |
HV |
32000 |
| LV1 |
16000 |
| LV2 |
16000 |
| Rated frequency, Hz |
50 |
| Rated voltage, kV |
HV |
20.0 |
| LV1 |
6.3 |
| LV2 |
6.3 |
| Maximum operating voltage, kV |
HV |
23 |
| LV1 |
7.2 |
| LV2 |
7.2 |
| Neutral operating mode of grid (isolated, solidly grounded, effectively grounded) |
HV |
isolated |
| LV1 |
isolated |
| LV2 |
isolated |
| Winding connection and group |
Dd0d0 |
| Tap changer HV |
Type (OLTC, NLTC) |
OLTC |
| Range |
±8x1,5% |
| Voltage of OLTC drive, V |
AC400V (3- ph+N) |
Tap changer MV
|
Type (OLTC, NLTC) |
- |
| Range |
- |
| Voltage of OLTC drive, V |
- |
| OLTC control microprocessor-based device with AVR function shall be in the scope of supply |
Yes |
| Type of cooling system (ONAN, ONAF, OFAF, other) |
Combined ONAN/ONAF |
| Voltage of fan and oil pump motors, V |
AC400V (3- ph+N) |
| Voltage of control circuits, V |
OLTC |
DC220V |
| Cooling system |
AC230V (1- ph+N) |
| Transformer`s coefficient of performance (PEI), % , not less(PEI shall meet the requirements of the ecodesign level 2) |
99,713 |
| Full Wave Lightning Impulse (LI), kV |
HV |
Comply with IEC 60076 |
| LV1 |
| LV2 |
| Painting color |
Agate-grey (RAL 7038) |
| Additional devices |
Gas relay for main tank |
Yes |
| Gas relay for OLTC tank |
Yes |
| Oil temperature indicator |
Yes |
| Winding temperature indicator |
Yes |
| Oil level indicators |
Yes |
| Pressure Relief Valve |
Yes |
| Shut-off valve |
Yes |
| Silica Gel filter |
Yes |
| Thermo syphon filter |
Yes |
Certifications
To further assure the quality and conformity of its products, Pearl Electric ensures that all relevant certifications are obtained, including those from KEMA, DEKRA, ASTA, CGC, CCS, CE, and UL. These certifications serve as a testament to the company's adherence to rigorous safety and performance standards.
Moreover, Pearl Electric maintains strict compliance with a myriad of international standards, such as those set forth by IEC (International Electrotechnical Commission), IEEE (Institute of Electrical and Electronics Engineers), BS EN (British Standards and European Norms), and CSA (Canadian Standards Association). This commitment to standardization ensures that its transformers and substations meet the highest global benchmarks for safety, reliability, and performance.
Company Profile
Introduction about PEARL ELECTRIC CO., LTD.
PEARL ELECTRIC, headquartered in Guangzhou, Guangdong Province, China, is a leading manufacturer specializing in power transformer and power equipment. Founded in 1958, the company has grown steadily to become a renowned name in the industry, providing high-quality products and services to customers worldwide.
Core Business
PEARL ELECTRIC focuses on manufacturing and distributing a wide range of electrical equipment, including transmission and distribution equipment, switching control devices, mechanical electrical equipment, photovoltaic devices, transformers, rectifiers, and inductors. The company's products are widely used in various industries, such as power generation, transmission, and distribution, as well as in industrial and commercial applications.
Innovation and Technology
PEARL ELECTRIC is committed to innovation and technology development. The company has a strong research and development team that continuously strives to improve product performance and reliability. With a robust intellectual property portfolio, including multiple patents, trademarks, and software copyrights, PEARL ELECTRIC remains at the forefront of technological advancements in the electrical industry.
FAQ:
1.Q: Are you manufacturer?
A: Yes, we are manufacturer. Our factory is in Guangzhou City, Guangdong Province.
2.Q: Can I get guarantee of products?
A: Yes, every product is 1 year quality warrantee under customer correct using the products.
3.Q: Do you have any Certificate?
A: Yes. We have awarded UL CE, 3C and KEMA certificate. If you need any other Certificate, we can help you to apply it.
4.Q: How can I pay you?
A: Pay by T/T and L/C is acceptable.
5.Q: What about the production?
A: In general, it take 4~6weeks and it depend on the different style.
6. Q:Where is your factory address?
A:No. 220, Tanxin Road, Dagang Town, Nansha District,GuangZhou,China.
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