Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series, a fully sealed oil-immersed power transformer crafted with precision by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer is designed to offer stellar advantages such as ultra-low energy loss, silent performance, and unparalleled efficiency. It stands as a beacon of energy conservation, significantly reducing pollution and environmental impact. Unlike traditional transformers, this model eliminates the need for an oil conservator. Its innovative design utilizes the elastic nature of the corrugated oil tank to autonomously adjust to oil volume changes, thereby maintaining a completely sealed environment that shields the transformer from air exposure. This ingenious feature prevents oil degradation, extends insulation life, and dramatically increases reliability, all while requiring no routine maintenance during normal operation.
1. Power Capacity: Spanning from an impressive 25 to 2500KVA, with flexible options including 24KV, 30KV, 33KV, 35KV, 36KV, and further customization to meet unique client specifications. 2. Voltage Level: Available in a range of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, accommodating diverse needs. 3. Type of Voltage Regulation: Offers versatile options including Off-circuit and On-load adjustments.
4. Tapping Range: Offers flexible choices of ±5%, 2x2.5%, ±4x2.5%, designed to suit various operational needs.
5. Frequency: Designed to operate efficiently at either 50Hz or 60Hz.
6. Phases: Available in both Three-phase and single-phase configurations to suit all power systems.
7. Connection Symbol: Flexibility with Dyn11, Yyn0 (or fully customizable to your precise requirements).
8. Short-circuit Impedance: Equipped with industry-standard impedance for optimal performance.
9. Operational Conditions: Optimally designed for altitudes up to 1000m and ambient temperatures below 40°C. If these conditions vary, necessary parameter adjustments will be made per standard protocols to ensure performance.
All modifications will rigorously follow industry standards to maintain quality and reliability.
Power Capacity: Ranging impressively from 25 to 2500KVA.
Voltage Levels: Wide-ranging choices from 10KV to 36KV, covering all major needs.
Voltage Level Overview:
Type of Voltage Regulation: Flexibility with Off-circuit or On-load regulation options.
Tapping Range: Customizable options including ±5%, ±2x2.5%, ±4x2.5% to meet specific requirements.
Frequency Options: Choice between 50Hz and 60Hz for optimal compatibility.
Phases: Configurable in either Three-phase or single-phase to suit system needs.
Connection Symbol: Available in Dyn11, Yyn0 with options for customization to meet unique specifications.
Short-circuit Impedance: Provided with standard impedance to ensure superior functionality.
Operational Conditions: Perfectly suited for altitudes up to 1000m and temperatures below 40°C for consistent performance.
If operational conditions differ, we will adjust parameters accordingly, strictly adhering to industry standards to ensure seamless performance.
The fully sealed oil-immersed power transformer, an innovation by Chaotai Power, stands out with minimal energy loss, quiet operation, and exceptional efficiency. It is a remarkable energy-saving solution that substantially minimizes pollution.
This fully sealed design, unlike conventional oil-immersed transformers, removes the need for an oil conservator. Its sophisticated management of oil volume changes is achieved through the elastic properties of the corrugated oil tank sheet, keeping the transformer air-shielded. This vital feature not only prevents oil aging and prolongs insulation life but also boosts reliability, eliminating the need for regular upkeep.
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 as a beacon of technological excellence in the vibrant realm of electrical integration. As a distinguished high-tech enterprise, we proudly present a team of highly skilled professionals in R&D, production, and service, fortified by over 15 years of invaluable industry expertise. Our steadfast commitment to achieving unmatched excellence sets us apart as pioneers of innovation and leaders in our field.
Our expansive and varied product portfolio boasts cutting-edge innovations, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These exceptional products have become indispensable across a multitude of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. Their impact extends to both commercial and residential applications. We take immense pride in shaping a brighter future with our groundbreaking solutions.
Rooted in a philosophy of relentless technological advancement and 'smart manufacturing,' we are fully committed to cultivating a culture of excellence through the integration of top-tier technical talents. This strategic approach enhances our core strengths, ensuring we consistently deliver unparalleled service value to our clients. Our remarkable growth journey is a testament to our ethos: transforming from inception to industry leadership through unwavering dedication. Our business strategy is firmly rooted in innovation, with an unwavering commitment to quality as the bedrock of our survival, market reputation as the pathway to development, and management efficiency as the engine of 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 seeks to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with ambitions reaching new heights. Integrity, unparalleled quality, exceptional service, and customer satisfaction form the essence of our values. We continually strive for excellence, persistently innovating to establish a brand synonymous with trust. The appreciation of our customers fuels our ambition. We express our deepest gratitude to our loyal customers, both new and longstanding, and warmly invite you to embark on a shared journey with Senhang Technology 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.