Product Description



Oil Immersed Series Transformer: Dive into the future of energy with our expertly developed transformers, designed for the modern world.
The S11-M series fully sealed oil immersed power transformer by Chaotai Power stands out with its exceptional low loss, minimal noise, and superior efficiency. This innovative transformer not only ensures significant energy savings but also minimizes environmental impact. By eliminating the traditional oil conservator, it intelligently adapts to oil volume changes through the flexible corrugated sheet of its oil tank, ensuring optimal operation. This design keeps the transformer insulated from air, significantly slowing down oil deterioration and insulation aging, thereby boosting operational reliability and eliminating the need for maintenance during normal operation.
1. Power Capacity: From 25KVA up to an impressive 2500KVA, catering to diverse needs with voltage specifications of 24KV, 30KV, 33KV, 35KV, 36KV, and more, customizable to specific customer requirements. 2. Voltage Level: Spanning across a comprehensive range of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV to suit varied applications. 3. Type of Voltage Regulation: Available in Off-circuit or On-load configurations, offering flexibility and precision.
4. Tapping Range: Meticulously designed for adjustable precision with ranges of ±5%, ±2x2.5%, and ±4x2.5% to accommodate specific energy requirements.
5. Frequency: Compatible with both 50Hz and 60Hz frequencies, ensuring global adaptability.
6. Phases: Options available for both Three-phase and Single-phase configurations, providing adaptability for diverse operational needs.
7. Connection Symbol: Standard options include Dyn11 and Yyn0, with customization available upon request for tailored connectivity solutions.
8. Short-Circuit Impedance: Engineered for standard impedance, ensuring consistent and reliable performance across various applications.
Altitude is not exceeding 1000m, and ambient temperature should not exceed 40°C. If unable to meet these conditions, we will expertly adjust parameters to align with industry standards.
Ensuring optimal adaptability, specifications can be fine-tuned in accordance with established standards for versatile operation.
Power Capacity: Ranging from 25KVA to 2500KVA, designed to meet diverse energy distribution needs with precision and reliability.
Voltage Levels: Offering a wide array of voltage options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV, to accommodate various requirements.
Voltage Level: Tailored to provide extensive options, ensuring compatibility with different infrastructure requirements.
Type of Voltage Regulation: Available in both Off-circuit and On-load variations to suit specific operational needs.
Tapping Range: Crafted with precision, offering ranges of ±5%, ±2x2.5%, and ±4x2.5% to meet specific electrical demands.
Frequency: Supports both 50Hz and 60Hz, facilitating seamless integration into various power systems worldwide.
Phases: Available in Three-phase or Single-phase configurations, providing versatility for different applications.
Connection Symbol: Standard options include Dyn11 and Yyn0, with customization available as per client specifications.
Short-circuit Impedance: Designed to adhere to standard impedance, delivering reliable and efficient performance.
Altitude should not exceed 1000m, and ambient temperature should remain below 40°C for optimal performance.
Should these conditions not be met, parameters will be modulated according to industry standards to ensure proper functioning.
The fully sealed oil immersed power transformer, developed by Chaotai Power, boasts low loss, low noise, and high efficiency. This advanced design achieves significant energy savings and environmental benefits.
In contrast to ordinary oil immersed transformers, the fully sealed version eliminates the oil conservator, compensating for oil volume changes through the flexibility of its corrugated oil tank sheet. This design isolates the transformer from air, significantly reducing oil deterioration and insulation aging, thereby enhancing operational reliability and eliminating regular maintenance needs.
Product Parameters
Oil immersed transformer product parameters |
Rated capacity kVA |
Voltage combination |
NO-load loss W |
Load loss W |
No-load current% |
Short-circuit |
HV (KV ) |
HV tapping range |
LV (KV) |
Connection symbol |
Impedance |
30 |
6.3kV
10.5kV
11kV
13.2kV
13.8kV
15kV |
±2
× 2.5%;
Or ±5% |
0.4 |
Dyn11 or Yyn0 |
90 |
660 |
2.1 |
5.5 |
50 |
130 |
960 |
2 |
63 |
150 |
1145 |
1.9 |
80 |
180 |
1370 |
1.8 |
100 |
200 |
1650 |
1.6 |
125 |
240 |
1980 |
1.5 |
160 |
290 |
2420 |
1.4 |
200 |
330 |
2860 |
1.3 |
250 |
400 |
3350 |
1.2 |
315 |
480 |
4010 |
1.1 |
400 |
570 |
4730 |
1 |
500 |
680 |
5660 |
1 |
630 |
810 |
6820 |
0.9 |
6 |
800 |
980 |
8250 |
0.8 |
1000 |
1150 |
11300 |
0.7 |
1250 |
1350 |
13200 |
0.7 |
1600 |
1630 |
15950 |
0.6 |
2000 |
1950 |
19140 |
0.6 |
2500 |
2340 |
22200 |
0.6 |
Main product
Company Profile

At the heart of Zhejiang ChaoTai Complete Equipment Co., Ltd. lies a commitment to excellence and innovation in electrical integration. As a prestigious high-tech enterprise, we boast a seasoned team in R&D, production, and service, with an impressive 15 years of industry experience setting us apart as leaders in the field.
Our diverse range of products is a testament to our expertise and dedication to quality: from high-voltage solid-state soft starters and capacitor cabinets to high and low voltage switchgear, including gas-insulated options, and comprehensive substation solutions. These cutting-edge products find their applications across a multitude of sectors—energy and chemical, metal smelting, electric power grids, and industrial manufacturing. Our reach extends to prestigious institutions such as universities and research bodies, as well as vital sectors like medical and pharmaceutical, municipal commerce, water conservancy and hydropower, road traffic, and inclusive commercial and residential domains.
Embracing a philosophy of 'smart manufacturing,' we are committed to pioneering technological advancements that enhance core competitiveness. This involves attracting top-tier technical talent and delivering unparalleled value to our clients, as we ambitiously aim to lead within the industry. From our early days of inception, we have rapidly evolved, consistently achieving milestones, from establishing our presence to reaching new heights of excellence. Our guiding principles include relentless innovation, a steadfast dedication to quality, and a reputation-driven market approach. We are guided by the vision of sustained growth, underpinned by efficient management practices. Our unwavering commitment to superior technology, standardized management, and exceptional quality is the cornerstone of our ethos. At Zhejiang ChaoTai, integrity is our foundation, quality is our hallmark, exceptional service is our promise, and customer satisfaction remains our ultimate goal. We aspire to set higher benchmarks in China's electric power and grid transmission fields. Our relentless pursuit of excellence, coupled with a fervent spirit of innovation, aims to establish a brand synonymous with trust and reliability. Your recognition fuels our journey, and we extend our heartfelt gratitude to our loyal customers, both new and longstanding. Senhang Technology warmly invites you to join us in this exciting journey towards a brighter, more connected future.
Our Advantages
Certifications
After Sales Service


FAQ
Q1. Are you a factory or trading company?
A.We are a factory.
Q2. Where is your factory located? How can I visit there?
A. Our factory is located in Wenzhou City, Zhejiang Province, China. You can fly to Longwan airport directly. All our clients,from home or abroad, are warmly welcome to visit us!
Q3. What's the payment term?
A. We accept TT. 30% deposit and 70% before shipment, Western Union, L/C At Sight is ok! We'll l show you the photos of the products and packages before you pay the balance.
Q4. Tell me the standard of package? What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons, If vou have leaallyl registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q5. Would you accept to use our logo?
A. If you have good quantity,it absolute no problem to do OEM.
Q6. How about the transport?
A. If the number of aoods is small we usually use TNT.DHL.FEDEX.EMS and some express voull offered. If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.
Q7. What is your Production lead time /delivery time?
A: Generally, it will take 25 to 30 days after receivina vour advance payment.
The specificl delivery time depends on the items and the quantity of your order. Silicone rubber's reqular product is 1,000/ week, Porcelain's need 2-3 weeks about 1000 pcs.
Q8. How do you make our business long-term and good relationship?
A:l. We keep aood auality and competitive price to ensure our customers benefit:
A: 2. We respect every customer as our friend and we sincerely do business and make friendsl with them, no matter where they come from.
A: 3.Most goods we have the type report according the IEC STANDARD
Q9. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the courier cost.
Q10. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q11. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q12.What certificates do you have?
A:ISO9001,OHSAS18001,ISO14001 certificate and Type test report of product.