Product Description



Oil Immersed Series Transformer:
Introducing the S11-M Series Fully Sealed Oil Immersed Power Transformer by Chaotai Power, a marvel of modern engineering. This transformer boasts unparalleled features such as ultra-low loss, whisper-quiet operation, and exceptional efficiency. Designed to deliver outstanding energy savings and significantly reduce ecological impact, it stands apart from conventional oil-immersed transformers. By eliminating the oil conservator, this transformer ingeniously uses the corrugated oil tank's elasticity to adjust and compensate for oil volume changes automatically. This innovation isolates the transformer from air, effectively curbing oil degradation and insulation aging, thereby enhancing operational reliability and virtually eliminating maintenance during standard operation.
1. Power Capacity: 25-2500KVA, available in 24KV, 30KV, 33KV, 35KV, 36KV, and custom specifications to meet clients' unique requirements. 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit and On-load regulation for optimal performance.
4. Tapping Range: Flexible options with ±5% and increments of ±2x2.5% or ±4x2.5% to suit your specific needs.
5. Frequency: Available in standard frequencies of 50Hz or 60Hz, adaptable to different regional power systems.
6. Phases: Designed for Three-phase systems, with Single-phase options available for specialized applications.
7. Connection Symbol: Configurable as Dyn11, Yyn0, or custom setups as per your requirements.
8. Short-Circuit Impedance: Engineered for standard impedance to ensure reliable performance across applications.
9. Altitude is not exceeding 1000m and ambient temperature not exceeding 40°C. If these conditions are not met, we will adjust the parameters in
accordance with industry standards, ensuring reliable functionality under diverse environmental conditions.
Power Capacity: Designed to handle 25-2500KVA, providing robust and versatile power solutions for various demands.
Voltage Options: Comprehensive offerings include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV to match varied power requirements.
Voltage Level: Tailored to suit different applications with a wide range of voltage levels.
Type of Voltage Regulation: Available in Off-circuit or On-load, enabling precise control over voltage outputs.
Tapping Range: Versatile tapping options include ±5% increments, ±2x2.5%, and ±4x2.5% for adaptability to changing load conditions.
Frequency: Compatible with both 50Hz and 60Hz systems, making it suitable for global applications.
Phases: Available in Three-phase configurations, with Single-phase options available for select applications.
Connection Symbol: Offers flexibility with configurations such as Dyn11 and Yyn0, or tailored solutions as needed.
Short-Circuit Impedance: Maintains standard impedance levels to ensure safe and efficient electrical performance.
Altitude and Temperature: Designed to operate efficiently at altitudes up to 1000m and temperatures up to 40°C.
In scenarios where environmental conditions exceed these specifications, we commit to adjusting parameters to meet established standards.
The fully sealed oil-immersed power transformer by Chaotai Power exemplifies innovation, offering minimal loss, reduced noise, and superior efficiency to maximize energy conservation and minimize environmental impact.
Our fully sealed design distinguishes itself by removing the oil conservator, utilizing the corrugated oil tank's elasticity to manage oil volume automatically. This ensures the transformer's isolation from air, mitigating oil degradation and insulation aging, boosting reliability, and minimizing routine 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

Zhejiang Chaotai Complete Equipment Co., Ltd. stands as a beacon of innovation in the realm of electrical integration, proudly recognized as a high-tech enterprise. With an impressive track record spanning over 15 years, our esteemed R&D, production, and service team is committed to excellence and cutting-edge advancements in the industry.
Our diverse range of products is at the forefront of modern technology, encompassing high-voltage solid-state soft starters, state-of-the-art capacitor cabinets, versatile high and low voltage switchgear, advanced gas-insulated switchgear, and comprehensive substation solutions. Designed for unparalleled performance, our products have found their niche in sectors as varied as energy and chemical industries, metal smelting, and electric power grids. They also play a pivotal role in industrial manufacturing, esteemed universities and research institutions, the medical and pharmaceutical landscapes, municipal commerce, and extend their reach to water conservancy and hydropower projects, road traffic systems, and both commercial and residential enclaves.
Our relentless pursuit of technological innovation and commitment to 'smart manufacturing' drive us to integrate elite technical talents, thereby fortifying our core competitiveness. This dedication allows us to deliver unparalleled value to our customers and to pioneer the premier brand in our industry. From our nascent beginnings to our current esteemed stature, our journey has been marked by transformation and growth, always anchored in innovation. We adhere to a modern business ethos that champions survival through quality, market expansion through reputation, and efficiency through astute management. Our unwavering commitment is to leverage 'technology as the guide, standardized management, and excellent quality' to achieve customer satisfaction and elevate our market presence. Our endeavors are deeply rooted in integrity, with quality being our hallmark and customer service our supreme priority. As we relentlessly pursue excellence, continuous innovation remains our core focus, all in our quest to build a brand synonymous with trust. Your trust and support fuel our ambitions. We extend our heartfelt gratitude to all customers, old and new, and invite you to join Senhang Technology as we collaboratively forge a prosperous and innovative future together.
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.