Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil-immersed power transformer, meticulously crafted and skillfully engineered by Zhejiang Chaotai Complete Equipment Co., Ltd. This unparalleled transformer shines with its exceptional attributes such as extremely low energy consumption, ultra-quiet performance, and superior efficiency. As a beacon of energy preservation, it dramatically curtails pollution and lessens its environmental footprint. Unlike traditional oil-immersed transformers, this state-of-the-art model removes the need for an oil conservator. Thanks to the brilliant adaptability of the corrugated oil tank, it autonomously adjusts and balances oil volume changes, maintaining a flawlessly sealed environment that protects the transformer from air exposure. This innovative feature effectively halts oil degradation, significantly extends the life of insulation, and greatly enhances operational reliability—all while eliminating the need for routine upkeep during standard operation.
1. Power Capacity: Spanning 25-2500KVA, with choices of 24KV, 30KV, 33KV, 35KV, 36KV, and further customization to cater to specific customer needs 2. Voltage Level: Offered in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Provides both Off-circuit and On-load options tailored for versatility
4. Tapping Range: Available options include ±5%, 2x2.5%, ±4x2.5% for maximum flexibility
5. Frequency: Choices of either 50Hz or 60Hz to suit various requirements
6. Phases: Offered in Three-phase or single-phase configurations, providing adaptable solutions
7. Connection Symbol: Dyn11, Yyn0 (or fully customizable to meet your unique specifications)
8. Short-circuit Impedance: Equipped with Standard Impedance
9. Operational Conditions: Designed for altitudes up to 1000m, and ambient temperatures below 40°C. If these conditions are exceeded, we will execute necessary parameter adjustments per standard protocols for optimal performance.
All modifications will strictly comply with industry standards, ensuring quality and reliability.
Power Capacity: A range from 25-2500KVA to meet diverse energy demands
Voltage Levels: Offered in 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV for comprehensive coverage
Voltage Level Overview:
Type of Voltage Regulation: Options include Off-circuit or On-load, providing adaptability for various applications
Tapping Range: Generous options with ±5%, ±2x2.5%, ±4x2.5% for optimal tuning
Frequency Options: Choose between 50Hz or 60Hz to match your system needs
Phases: Available in Three-phase or single-phase for versatile configurations
Connection Symbol: Dyn11, Yyn0 (customizable upon request to fit your precise requirements)
Short-circuit Impedance: Comes standard with Impedance for reliability
Operational Conditions: Ideal for altitudes up to 1000m and temperatures not exceeding 40°C, ensuring robust performance
If conditions stray from the standard, necessary parameter adjustments will be made, maintaining adherence to standard guidelines.
The fully sealed oil-immersed power transformer, a marvel of ingenuity by Chaotai Power, excels with incredibly low energy consumption, serene operation, and outstanding efficiency. It stands as a remarkable energy-saving solution that significantly mitigates pollution.
In contrast to conventional oil-immersed transformers, this fully sealed design eliminates the necessity for an oil conservator. It adeptly manages oil volume variations through the flexible capabilities of the corrugated oil tank sheet, ensuring the transformer remains protected from air exposure. This essential feature not only prevents oil degeneration and slows insulation aging but also markedly enhances reliability, abolishing the need 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. stands at the forefront of technological brilliance in the ever-evolving domain of electrical integration. As a distinguished high-tech enterprise, we take great pride in our elite R&D, production, and service teams, empowered by more than 15 years of rich industry experience. Our steadfast dedication to achieving unparalleled excellence sets us apart as pioneers in innovation, consistently leading the way with cutting-edge advancements.
Our expansive and diverse product line showcases cutting-edge innovations, including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These indispensable products are crucial across a wide array of sectors, such as energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. They extend their utility to both commercial and residential applications, making us immensely proud to empower the future with our revolutionary solutions.
Rooted in an ethos of relentless technological advancement and 'smart manufacturing,' we are wholly devoted to cultivating a culture of excellence by integrating top-tier technical talents. This strategic initiative fortifies our core strengths, enabling us to consistently deliver unparalleled service value to our clients. Our extraordinary journey from inception to industry leadership is a testament to our philosophy: a transformation driven by unwavering dedication. Our business strategy is resolutely anchored in innovation, with an unyielding commitment to quality as the cornerstone of our existence, market reputation as the path to development, and management efficiency as the catalyst for profitability. We are committed to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the foundation of our quality and talent management initiatives. Our strategic vision is to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with ambitions that soar to new heights. Integrity, unparalleled quality, exceptional service, and customer satisfaction are the core of our values. We relentlessly strive for excellence, continuously innovating to forge a brand synonymous with trust. The appreciation of our customers fuels our ambitions. We extend our deepest gratitude to our loyal customers, both new and long-standing, and warmly invite you to join Senhang Technology on a shared journey towards a brighter tomorrow.
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.