Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, crafted with precision and innovation by Zhejiang Chaotai Complete Equipment Co., Ltd. This remarkable transformer distinguishes itself with its exceptionally low energy loss, whisper-quiet performance, and unparalleled efficiency. It stands as a beacon of energy conservation, significantly cutting pollution and reducing environmental footprints. Unlike traditional oil-immersed transformers, this state-of-the-art model eliminates the need for an oil conservator. Thanks to the clever design of the corrugated oil tank, it self-regulates and compensates for oil volume changes, ensuring a perfectly sealed environment that protects the transformer from air exposure. This pioneering feature effectively prevents oil degradation, greatly extends the life of insulation materials, and significantly boosts operational reliability—all while requiring no routine maintenance under normal conditions.
1. Power Capacity: Offering a powerful range from 25-2500KVA, with flexible options like 24KV, 30KV, 33KV, 35KV, 36KV, and customization capabilities to tailor to specific customer demands. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, providing extensive adaptability. 3. Type of Voltage Regulation: Versatile functionality with Off-circuit and On-load options available for diverse applications.
4. Tapping Range: Features adaptable selections of ±5%, 2x2.5%, or ±4x2.5% to accommodate diverse power needs.
5. Frequency: Offered in both 50Hz and 60Hz, catering to varied regional electricity standards.
6. Phases: Supplied in both Three-phase and single-phase configurations to suit various application requirements.
7. Connection Symbol: Choose from standard options like Dyn11, Yyn0 or customize to your unique specifications effortlessly.
8. Short-circuit Impedance: Integrated with Standard Impedance for consistently reliable performance.
9. Operational Conditions: Expertly designed to operate optimally at altitudes up to 1000m and within ambient temperatures under 40°C. Should these conditions change, parameters will be adjusted accordingly as per standard protocols.
All modifications will adhere strictly to industry standards, assuring peak performance and reliability.
Power Capacity: Spanning an impressive range from 25-2500KVA to meet diverse energy requirements.
Voltage Levels: Provided in 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, offering remarkable versatility.
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load variants for flexible and adaptable control.
Tapping Range: Offers adjustable options like ±5%, ±2x2.5%, ±4x2.5% to meet precise specifications.
Frequency Options: Select from 50Hz or 60Hz to align with local power standards.
Phases: Offered in both Three-phase and single-phase, catering to a wide array of application scenarios.
Connection Symbol: Standard choices include Dyn11, Yyn0, with fully customizable configurations available for specific needs.
Short-circuit Impedance: Features Standard Impedance for dependable, consistent operation.
Operational Conditions: Engineered to perform optimally at altitudes not exceeding 1000m and temperatures below 40°C.
Should operational conditions vary, necessary parameter adjustments will be made to comply with standard guidelines, ensuring seamless performance.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative capabilities, excels with its impressively low energy loss, silent operations, and outstanding efficiency. It stands as a robust energy-saving solution that significantly reduces pollution.
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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 paragon of innovation and technological prowess in the dynamic realm of electrical integration. As a distinguished high-tech enterprise, we boast over 15 years of profound industry expertise, supported by a formidable team of experts in research, development, production, and service. Our unwavering dedication to exceptional excellence distinguishes us as trailblazers of advancement, always at the forefront of technological breakthroughs.
Our comprehensive and versatile product portfolio showcases state-of-the-art advancements, comprising high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These groundbreaking products are vital across a vast array of industries, including energy, chemical sectors, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. They are designed to enhance both commercial and residential environments alike. With our innovative solutions, we proudly empower the future.
Guided by a philosophy of continuous technological progression and 'smart manufacturing,' we are passionately committed to nurturing a culture of excellence through the integration of premier technical talent. This strategic dedication elevates our core competencies, ensuring we consistently provide unmatched service value to our clients. Our remarkable growth journey is a testament to our core ethos: transforming from inception to industry leadership through unwavering dedication. Our business strategy is deeply embedded in innovation, with an unwavering commitment to quality forming the cornerstone of our existence, market reputation driving our growth, and management efficiency propelling profitability. We are dedicated to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the cornerstones of our quality and talent management initiatives. Our strategic vision aims to elevate our competitive edge in the market, serving China's electric power and grid transmission and distribution sectors with aspirations reaching new zeniths. Integrity, unmatched quality, exceptional service, and customer satisfaction lie at the heart of our values. We tirelessly pursue excellence, perpetually innovating to build a brand synonymous with trust. The appreciation from our customers invigorates our ambition. We sincerely extend our deepest gratitude to our loyal customers, both new and returning, and warmly invite you to join us on a shared journey with Senhang Technology 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.