Product Description



Oil immersed series transformer:
Introducing the S11-M series, an exceptional fully sealed oil immersed power transformer by Chaotai Power. This advanced transformer boasts impressive benefits of low loss, minimal noise, and high efficiency, making it a champion in energy saving and pollution reduction. Unlike standard oil immersed transformers, this innovative model eliminates the need for an oil conservator, thanks to its unique design. The change in oil volume is ingeniously managed through the elasticity of the corrugated oil tank, ensuring seamless auto-adjustments. By isolating the transformer from the air, it significantly mitigates oil deterioration and insulation aging, thereby enhancing operational reliability and eliminating the need for maintenance during normal operations.
1. Power Capacity: Ranging from 25 to 2500KVA, available in 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to meet specific client 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 or On-load regulation for tailored performance.
4. Tapping Range: Offering flexible adjustment options of ±5%, ±2x2.5%, and ±4x2.5% to suit various operational needs.
5. Frequency: Designed to operate optimally at either 50Hz or 60Hz frequencies.
6. Phases: Available in both three-phase or single-phase configurations to accommodate diverse power requirements.
7. Connection Symbol: Standard options include Dyn11, Yyn0, or as requested to fit specific installation needs.
8. Short-circuit Impedance: Featuring standard impedance levels to ensure robust performance and safety.
9. Altitude: Suitable for altitudes not exceeding 1000m, with ambient temperatures not surpassing 40°C. Should these conditions not be met, parameter adjustments will be made to comply with standards.
Adherence to standards ensures that if predefined conditions are exceeded, necessary parameter modulations will be implemented.
Power Capacity: Spanning 25-2500KVA, catering to varied power needs.
Voltage Level: Available in a comprehensive range including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, along with 30KV, 33KV, 35KV, and 36KV.
Voltage Level: Providing versatile options to suit diverse requirements.
Type of Voltage Regulation: Customizable with options for Off-circuit or On-load regulation to optimize performance.
Tapping Range: Adaptable with ±5%, ±2x2.5%, and ±4x2.5% configurations for precise voltage control.
Frequency: Compatible with either 50Hz or 60Hz, ensuring flexibility for various applications.
Phases: Configurable in either three-phase or single-phase to meet specific needs.
Connection Symbol: Choose from standard Dyn11, Yyn0, or customize upon request.
Short-circuit Impedance: Maintains standard impedance for reliable protection and performance.
Altitude: Capable of operating at altitudes not exceeding 1000m with ambient temperatures up to 40°C.
If operational conditions exceed specifications, parameters will be adjusted accordingly to maintain compliance with standards.
The fully sealed oil immersed power transformer by Chaotai Power stands out with its remarkable low loss, quiet operation, and high efficiency. These features not only enhance energy efficiency but also contribute significantly to pollution reduction.
This fully sealed transformer outclasses ordinary models by eliminating the oil conservator. Its design allows for automatic adjustment of oil volumes through the corrugated sheet's elasticity. By isolating the transformer from air exposure, it effectively curtails oil degradation and insulation aging, thereby boosting operational reliability and minimizing maintenance during standard operations.
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 cutting-edge realm of electrical integration. As a distinguished high-tech enterprise, we boast a dedicated team of professionals in research, development, production, and service, all backed by an impressive 15 years of industry expertise.
Our comprehensive suite of products includes advanced high-voltage solid-state soft starters, sophisticated capacitor cabinets, versatile high and low voltage switchgear, robust gas-insulated switchgear, and cutting-edge substations. These outstanding solutions find application across a diverse array of sectors, including the dynamic energy and chemical industries, the robust metal smelting and electric power grids, and the industrious industrial manufacturing landscape. Furthermore, our products serve esteemed universities and research institutions, the innovative medical and pharmaceutical sectors, and vital municipal commerce. They are integral to the water conservancy and hydropower sectors, essential in road traffic management, and serve both commercial and residential realms with excellence.
At Zhejiang ChaoTai, we are passionate about technological innovation and champion the philosophy of 'smart manufacturing.' Our commitment to excellence is evidenced by our strategic initiative to attract top-tier technical talents, thereby amplifying our core competitiveness. We strive to deliver unmatched value to our customers and are on a mission to establish ourselves as the leading brand in the industry. Since our inception, we have journeyed from humble beginnings to a position of excellence, driven by continual innovation. Our business ethos is anchored in quality-driven survival, market-focused strategies, reputation-fueled growth, and management-led efficiency. Our unwavering commitment to 'technology as the guide, standardized management, superior quality, and customer satisfaction' fuels our quality and technical talent management, enhancing our market competitiveness. We are dedicated to advancing the transmission and distribution fields of China's electric power and grid with ever-ambitious objectives. Anchored in integrity, prioritizing quality, ensuring superior service, and achieving customer satisfaction are our core values. Our relentless pursuit of excellence, commitment to ongoing innovation, and dedication to building a trustworthy brand underscore our development philosophy. Your recognition fuels our journey, and we extend heartfelt gratitude to our loyal customers for their unwavering support. At Senhang Technology, we eagerly anticipate collaborating with you to forge a brighter 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.