Product Description



Oil Immersed Series Transformer: A revolution in transforming power efficiency and environmental consideration.
Unveiling the S11-M series, a marvel of engineering from Zhejiang Chaotai Complete Equipment Co., Ltd. This powerhouse of a transformer is distinguished by its groundbreaking features: extraordinary energy efficiency, whisper-quiet performance, and unparalleled reliability. It epitomizes an energy-saving solution, drastically minimizing ecological footprint. Unlike its predecessors, this state-of-the-art model forgoes the traditional oil conservator. Ingeniously designed, it autonomously monitors and adapts to oil volume variations through a flexible corrugated oil tank, thereby safeguarding the transformer from air infiltration. This pioneering design feature impedes oil degradation, decelerates insulation wear, and substantially bolsters operational dependability, rendering maintenance obsolete during normal conditions.
1. Power Capacity: Tailor your needs with a range from 25-2500KVA, with options for 24KV, 30KV, 33KV, 35KV, 36KV, and full customization to meet specific client demands. 2. Voltage Level: Options abound with 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Voltage Regulation: Choice of Off-circuit or On-load, ensuring precise control and adaptability.
4. Tapping Range: Fine-tune performance with a range of ±5%, 2x2.5%, ±4x2.5%.
5. Frequency: Available in 50Hz or 60Hz to suit global standards.
6. Phases: Versatile options in three-phase or single-phase configurations.
7. Connection Symbol: Flexibility with Dyn11, Yyn0 or tailored to your specifications.
8. Short-circuit Impedance: Adheres to Standard Impedance for optimal performance.
9. Operational Conditions: Designed for altitudes up to 1000m, with a maximum ambient temperature of 40°C. Should conditions vary, adjustments will be implemented following established protocols.
Rest assured, all modifications align strictly with industry benchmarks.
Power Capacity: Offering a robust range from 25-2500KVA to suit diverse power needs.
Voltage Levels: Comprehensive options including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV.
Voltage Level Overview: Navigate through a spectrum of voltage levels designed to fit your precise requirements.
Type of Voltage Regulation: Choose between Off-circuit or On-load to match operational preferences.
Tapping Range: Precision tuning available with selections of ±5%, ±2x2.5%, ±4x2.5%.
Frequency Options: Choose 50Hz or 60Hz to seamlessly integrate with regional standards.
Phases: Customizable in three-phase or single-phase to meet diverse application needs.
Connection Symbol: Dyn11, Yyn0, with the option for customization as per project requirements.
Short-circuit Impedance: Conforms to Standard Impedance for assured reliability.
Operational Conditions: Designed for altitudes not exceeding 1000m and ambient temperatures below 40°C.
Should deviations occur, we will implement essential parameter adjustments in line with standard guidelines.
The fully sealed oil-immersed power transformer from Chaotai Power is a beacon of innovation, renowned for its minimal energy loss, tranquil operation, and peak efficiency. It stands as a superior energy-conserving solution that markedly reduces environmental impact.
Unlike traditional models, this cutting-edge fully sealed design eradicates the need for an oil conservator. It autonomously regulates oil volume shifts with the elasticity of the corrugated oil tank sheet, ensuring consistent air isolation. This critical feature hinders oil degradation and insulation aging, significantly enhancing reliability while eliminating the demand for regular maintenance.
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. emerges as a beacon of innovation and technological excellence in the field of electrical integration. As a celebrated high-tech enterprise, we pride ourselves on a robust R&D, production, and service team, strengthened by over 15 years of invaluable industry expertise. Our unwavering dedication to excellence positions us as pioneers of innovation and leaders in the industry.
Our extensive product portfolio showcases state-of-the-art solutions including high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, sophisticated gas-insulated switchgear, and comprehensive substations. These indispensable products have carved their niche across diverse sectors such as energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. Additionally, their applications extend to both commercial and residential settings. Proudly, we propel the future forward with our transformative and innovative solutions.
Rooted in a philosophy of relentless technological innovation and smart manufacturing, we are dedicated to cultivating a culture of excellence by integrating top-tier technical talents. Our strategic focus enhances core competencies, ensuring the delivery of unparalleled service value to clients. Our growth narrative is a testament to our ethos: evolving from inception to industry leadership through steadfast dedication and innovation. Our business strategy remains firmly rooted in innovation, maintaining that quality is the cornerstone of survival, market reputation is the path to development, and management efficiency is the vital key to profitability. We are committed to 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the foundations of our quality and talent management initiatives. Our strategic vision aims to amplify market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that are faster, stronger, and higher. Integrity, exceptional quality, and outstanding service, paired with customer satisfaction, form our core values. We pursue excellence relentlessly, continually innovating to establish a brand synonymous with trust. The recognition from our customers fuels our ambition. We extend our heartfelt gratitude to loyal customers, both new and enduring, and warmly invite you to join Senhang Technology on a shared journey towards a brighter 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.