Product Description



Oil Immersed Series Transformer: Expertly crafted for superior functionality and efficiency.
The S11-M Series Fully Sealed Oil Immersed Power Transformer, developed and produced by Chaotai Power, offers remarkable benefits including low loss, minimal noise, and exceptional efficiency. This state-of-the-art transformer not only promotes energy conservation but also significantly reduces environmental impact. By eliminating the traditional oil conservator, the fully sealed design allows automatic adjustment of oil volume through the innovative elasticity of the corrugated oil tank's sheets. This ensures the transformer remains isolated from air, preventing oil degradation and insulation aging, thereby enhancing operational reliability and negating the need for regular maintenance.
1. Power Capacity: Ranges from 25-2500KVA, suitable for 24KV, 30KV, 33KV, 35KV, 36KV, and customized specifications according to customer requirements. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load to suit your specific application.
4. Tapping Range: Offers flexibility with options of ±5%, ±2x2.5%, or ±4x2.5% to meet diverse operational needs.
5. Frequency: Operates seamlessly on a standard frequency of either 50Hz or 60Hz.
6. Phases: Available in both three-phase and single-phase configurations to fit various power distribution systems.
7. Connection Symbol: Configurations include Dyn11 and Yyn0, with custom options available upon request.
8. Short-Circuit Impedance: Adheres to standard impedance guidelines, ensuring compatibility and safety.
9. Altitude: Operational at altitudes not exceeding 1000 meters, with ambient temperatures up to 40°C. If conditions exceed these parameters, we ensure adaptability by modulating parameters to align with industry standards.
This adaptability ensures performance remains optimal in varying environmental conditions.
Power Capacity: Extending from 25 to 2500KVA, catering to a wide range of power requirements.
Voltage Level Options: IOkYAky, 10Y I a. D SKY, 20KY, 22KY, 2ANV, 30KV, 33KV, 35KV, 36KV. Tailor solutions to meet your precise voltage needs.
Voltage Level: Designed to function across multiple voltage levels, ensuring flexibility and user satisfaction.
Type of Voltage Regulation: Choose from Off-circuit or On-load regulation for optimal control and efficiency.
Tapping Range: Offers customization with ±5%, ±2x2.5%, and ±4x2.5% settings for precise operational control.
Frequency: Compatible with the international standards of 50Hz or 60Hz, ensuring seamless integration.
Phases: Adaptable for both three-phase and single-phase setups to cater to all power distribution networks.
Connection Symbol: Featuring Dyn11 and Yyn0 configurations, with further customization available to match specific needs.
Short-Circuit Impedance: Conforms to standard impedance, providing consistent performance and safety assurances.
Altitude and Temperature: Designed for use up to an altitude of 1000 meters and ambient temperatures not exceeding 40°C, with adjustable parameters for extreme conditions.
If environmental factors surpass these limits, we ensure compliance with standards through adaptable parameter modulation.
Our fully sealed oil-immersed power transformer, developed by Chaotai Power, stands out for its low loss, reduced noise, and superior energy efficiency. This innovative design ensures energy savings and minimizes environmental pollution.
Unlike ordinary models, our fully sealed transformer eliminates the need for an oil conservator. The oil volume changes are expertly managed by the corrugated oil tank's elasticity, maintaining isolation from air. This design prevents oil degradation and insulation aging, significantly enhancing reliability and minimizing maintenance requirements.
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. is a pioneering high-tech enterprise, leading the frontier of electrical integration. With an elite team dedicated to research, development, and service, we boast over 15 years of esteemed industry expertise, positioning us as a vanguard in the field.
Our extensive range of products includes state-of-the-art high-voltage solid-state soft starters, sophisticated capacitor cabinets, versatile high and low voltage switchgear, cutting-edge gas-insulated switchgear, and comprehensive substations. Our solutions are seamlessly integrated into diverse sectors such as energy and chemical industries, metal smelting, power grids, industrial manufacturing, academic institutions, healthcare and pharmaceuticals, municipal commerce, water conservancy, hydropower, transportation systems, and both commercial and residential infrastructures.
In our quest for excellence, we embrace the philosophy of 'smart manufacturing' by continuously infusing high-level technical talent into our operations. This not only enhances our core competencies but also ensures that we deliver unparalleled value and service to our customers, striving to become the epitome of industry excellence. Since our inception, we have embarked on an inspiring journey of evolution, scaling from nascent beginnings to achieving excellence. Innovation is our cornerstone, adhering to a modern business ethos: surviving through quality, driving growth with market alignment, building reputation-driven development, and achieving efficiency through meticulous management. Our commitment is steadfast to 'technology as a guide, standardized management, superior quality, and customer satisfaction,' fortifying our competitive presence in the market. Our mission is to advance China's power transmission and distribution sectors with unparalleled speed, strength, and ambition. We hold integrity as our foundation, prioritize quality above all, deliver exceptional service, and strive for absolute customer satisfaction as our eternal promise. Our relentless pursuit of excellence, continuous innovation, and dedication to establishing a trustworthy brand define our unwavering development goals. Your trust fuels our journey. We express heartfelt gratitude to our loyal clients, both new and longstanding, for their unwavering support and look forward to partnering with you to create a brighter, more prosperous 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.