Product Description



Oil Immersed Series Transformer:
Introducing the cutting-edge S11-M series, a fully sealed oil-immersed power transformer meticulously engineered by Zhejiang Chaotai Complete Equipment Co., Ltd. This outstanding transformer distinguishes itself with unparalleled attributes, including exceptionally low energy loss, whisper-quiet operational performance, and superior efficiency. It embodies a groundbreaking energy-saving solution, drastically reducing environmental pollution and impact. Diverging from traditional oil-immersed transformers, this sophisticated model innovatively omits the requirement for an oil conservator. Through the ingenious elasticity of the corrugated oil tank, it autonomously compensates for oil volume fluctuations, effectively sealing the transformer from air exposure. This pioneering feature ensures oil integrity, decelerates insulation aging, and significantly boosts operational reliability, completely eliminating maintenance during regular use.
1. Power Capacity: Ranging from 25 to 2500KVA, available in 24KV, 30KV, 33KV, 35KV, 36KV, with customization options to meet specific customer demands. 2. Voltage Level: Compatible with levels of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Tailored options include Off-circuit or On-load regulation.
4. Tapping Range: Versatile options of ±5%, 2x2.5%, and ±4x2.5% to meet diverse needs.
5. Frequency: Available in standard settings of 50Hz or 60Hz to cater to different market requirements.
6. Phases: Flexible options of three-phase or single-phase configurations.
7. Connection Symbol: Standard configurations of Dyn11 and Yyn0, with customization available as needed.
8. Short-circuit Impedance: Engineered to maintain standard impedance levels for optimal performance.
9. Operational Conditions: Designed for altitudes up to 1000m and ambient temperatures under 40°C. Should these parameters be exceeded, adjustments will align with industry-standard protocols to ensure seamless operation.
All adjustments adhere to rigorous industry standards, ensuring unmatched reliability and performance.
Power Capacity: Robust range from 25 to 2500KVA to suit various application requirements.
Voltage Levels: Wide-ranging options include 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV to accommodate diverse needs.
Voltage Level Overview:
Type of Voltage Regulation: Offering both Off-circuit and On-load regulation for adaptable use.
Tapping Range: Available in ±5%, ±2x2.5%, and ±4x2.5% options, ensuring precision in performance.
Frequency Options: Standard 50Hz or 60Hz settings to meet global standards.
Phases: Available in both three-phase and single-phase setups for diverse applications.
Connection Symbol: Standard Dyn11, Yyn0 configurations with custom options on request.
Short-circuit Impedance: Designed to conform to standard impedance for reliable operation.
Operational Conditions: Suitable for altitudes up to 1000m and temperatures below 40°C, with provisions for standard-aligned adjustments if exceeded.
In the event of condition deviations, we ensure all parameter adjustments are carried out in strict compliance with standardized guidelines.
The fully sealed oil-immersed power transformer, a masterpiece of innovation by Chaotai Power, excels in minimizing energy loss, operating quietly, and achieving high efficiency. It is a remarkable energy-saving solution that significantly reduces pollution.
Departing from conventional oil-immersed transformers, this fully sealed design ingeniously eliminates the oil conservator. Through the elastic flexibility of the corrugated oil tank sheet, it effectively manages oil volume changes, ensuring the transformer remains isolated from air exposure. This critical feature not only preserves oil quality and forestalls insulation aging but also enhances reliability, negating 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. shines as a beacon of technological excellence in the domain of electrical integration. As a prestigious high-tech enterprise, we take pride in our dedicated R&D, production, and service teams, backed by an impressive 15 years of invaluable industry experience. Our unwavering commitment to excellence distinguishes us as leaders in innovation and progress.
Our expansive product portfolio showcases state-of-the-art solutions such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These products are pivotal across a diverse range of industries, including energy, chemical processing, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal services, water management, hydropower, road traffic, and both residential and commercial sectors. We proudly drive future advancements with our transformative solutions.
Firmly rooted in a philosophy of relentless technological advancement and 'smart manufacturing,' we are resolute in nurturing a culture of excellence by integrating exceptional technical talents. This strategic focus enhances our core competencies, enabling us to deliver unparalleled service value to our clients. Our growth story is a testament to our ethos: evolving from inception to industry leadership through unwavering dedication. Our business strategy is firmly anchored in innovation, with an unwavering commitment to quality as the foundation of our survival, market reputation as our path to development, and management efficiency as the key to profitability. We solemnly pledge to harness 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the cornerstones 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 aspirations that aim for greater speed, strength, and elevation. Integrity, unparalleled quality, extraordinary service, and customer satisfaction are our core values. We persistently pursue excellence, perpetually innovating to establish a brand synonymous with trust. The acknowledgment of our valued customers fuels our ambition. With heartfelt gratitude, we thank our loyal customers, both new and long-standing, and extend a warm invitation to join Senhang Technology on a shared journey toward 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.