Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil-immersed power transformer, an engineering marvel meticulously crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This extraordinary transformer excels with its exceptionally low energy loss, whisper-quiet operation, and unparalleled efficiency. It sets a new standard for energy conservation by dramatically reducing pollution and minimizing environmental impact. Unlike traditional oil-immersed transformers, this state-of-the-art model does away with the need for an oil conservator. Thanks to the ingenious flexibility of its corrugated oil tank, it autonomously adjusts and compensates for oil volume fluctuations, maintaining an impeccable sealed environment that keeps the transformer shielded from air exposure. This transformative feature effectively prevents oil degradation, significantly extends the lifespan of insulation, and substantially enhances operational reliability—all while eliminating the need for routine maintenance during standard usage.
1. Power Capacity: Offering a versatile range from 25-2500KVA, with voltage options including 24KV, 30KV, 33KV, 35KV, 36KV. Further customization is available to cater to specific customer requirements. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Offers both Off-circuit and On-load options for tailored performance.
4. Tapping Range: Select from ±5%, 2x2.5%, ±4x2.5% to fine-tune the transformer's performance.
5. Frequency: Tailor your transformer with options for either 50Hz or 60Hz, ensuring compatibility with different power systems.
6. Phases: Flexibly available in Three-phase or single-phase configurations to fit your needs.
7. Connection Symbol: Choose from Dyn11, Yyn0, or fully customize to seamlessly fit your specifications.
8. Short-circuit Impedance: Equipped with Standard Impedance for optimal performance and safety.
9. Operational Conditions: Designed to perform flawlessly at altitudes not exceeding 1000m, and ambient temperatures below 40°C. If these conditions are not met, we will adjust parameters according to standard protocols.
All adjustments will be rigorously aligned with industry standards, ensuring reliability and efficiency.
Power Capacity: Spanning from 25-2500KVA to meet diverse power demands.
Voltage Levels: Choose from an extensive range of 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, providing flexibility for various applications.
Voltage Level Overview:
Type of Voltage Regulation: Offered in both Off-circuit and On-load options for tailored adaptability.
Tapping Range: Customize with options including ±5%, ±2x2.5%, ±4x2.5% for precise performance control.
Frequency Options: Choose between 50Hz or 60Hz to ensure compatibility with your electrical systems.
Phases: Available in versatile Three-phase or single-phase configurations to suit different operational needs.
Connection Symbol: Options include Dyn11, Yyn0, with the ability for full customization upon request.
Short-circuit Impedance: Comes standard with impedance designed for optimal functionality.
Operational Conditions: Engineered for reliability at altitudes not exceeding 1000m and temperatures below 40°C.
Should conditions deviate from the norm, we will precisely adjust parameters, strictly following standard guidelines to ensure peak performance.
The fully sealed oil-immersed power transformer, a pinnacle of innovation by Chaotai Power, shines with its incredibly low energy loss, silent operation, and unparalleled efficiency. It provides an outstanding energy-saving solution that significantly reduces pollution.
In stark contrast to conventional oil-immersed transformers, this fully sealed design eliminates the necessity for an oil conservator. Utilizing the agile capabilities of the corrugated oil tank sheet, it deftly manages oil volume changes, ensuring the transformer remains insulated from air exposure. This crucial feature not only prevents oil deterioration and delays insulation aging but also markedly boosts reliability, doing away with 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 as a beacon of technological prowess in the electrifying realm of electrical integration. As a leading high-tech enterprise, we proudly present a formidable team of R&D specialists, production experts, and service professionals, each fortified by over 15 years of invaluable industry acumen. Our resolute commitment to achieving extraordinary excellence sets us apart as pioneers of innovation, driving forward the boundaries of what's possible.
Our extensive and diverse product portfolio showcases 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 cemented their place as indispensable assets 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 utility extends seamlessly into both commercial and residential spheres. We take immense pride in empowering the future with our groundbreaking solutions, shaping the landscape of tomorrow today.
Firmly rooted in a philosophy of relentless technological advancement and 'smart manufacturing,' we are unwaveringly committed to fostering a culture of excellence through the seamless integration of top-tier technical talents. This strategic approach amplifies our core strengths, ensuring we consistently deliver unmatched service value to our esteemed clients. Our inspiring journey from inception to industry leadership is a testament to our ethos: transforming through unyielding dedication. Our business strategy is firmly anchored in innovation, with an unrelenting commitment to quality as our cornerstone, market reputation as the gateway to development, and management efficiency as the catalyst for profitability. We dedicate ourselves to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management initiatives. Our visionary goal is to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that continually reach new heights. Integrity, unrivaled quality, exceptional service, and customer satisfaction form the essence of our values. We tirelessly strive for excellence, persistently innovating to build a brand synonymous with trust and reliability. The appreciation of our customers fuels our ambition. We extend our heartfelt gratitude to our loyal customers, both new and enduring, and warmly invite you to join Senhang Technology on a shared journey towards a radiant 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.