Product Description



Oil Immersed Series Transformer:
The S11-M series, a marvel of innovation by Chaotai Power, introduces a fully sealed oil-immersed power transformer. This engineering masterpiece offers unparalleled advantages, boasting low loss, reduced noise, and heightened efficiency. It excels at delivering significant energy savings and minimizes environmental impact. Unlike traditional oil-immersed transformers, this ingenious design eliminates the need for an oil conservator. It smartly adjusts and compensates for oil volume changes via the elasticity of its corrugated oil tank sheets, creating a sealed barrier from the air. This not only impedes oil deterioration and insulation aging but substantially boosts operational reliability, ensuring maintenance-free operation under typical conditions.
1. Power Capacity: 25-2500KVA, with options for 24KV, 30KV, 33KV, 35KV, 36KV and custom specifications to meet customer needs. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Options include Off-circuit or On-load adjustment.
4. Tapping Range: Configurable at ±5%, ±2x2.5%, and ±4x2.5% to suit diverse operational requirements.
5. Frequency: Available for systems operating at either 50Hz or 60Hz.
6. Phases: Designed for both three-phase and single-phase applications.
7. Connection Symbol: Flexibly configurable to Dyn11, Yyn0, or as per specific customer requests.
8. Short-Circuit Impedance: Engineered with a standard impedance to ensure compatibility and performance.
9. Altitude: Optimal performance at altitudes not exceeding 1000m and ambient temperatures not surpassing 40°C. Should conditions differ, parameters will be tailored in accordance with industry standards.
If conditions cannot be met, we will modify parameters to align with regulatory standards.
Power Capacity: Extensive range from 25-2500KVA to accommodate various applications.
Voltage Options: Available in a wide range including 10KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV, to suit specific energy distribution requirements.
Voltage Level:
Voltage Regulation: Options for Off-circuit or On-load regulation to ensure efficiency.
Tapping Range: Configurable at ±5%, with additional precision at ±2x2.5% and ±4x2.5%.
Frequency: Versatile frequency support for both 50Hz and 60Hz systems.
Phases: Adaptable for both three-phase and single-phase systems.
Connection Symbol: Customizable to Dyn11, Yyn0, or as specifically required by the client.
Short-Circuit Impedance: Designed with a standard impedance for reliable operation.
Operating Conditions: Suitable for altitudes up to 1000m and ambient temperatures up to 40°C.
Modifications will be made to adhere to standard practices if operational conditions are outside specified ranges.
Chaotai Power has redefined efficiency with its fully sealed oil-immersed power transformer. This product promises low operational losses, muted noise output, and exceptional efficiency, delivering outstanding energy savings while reducing environmental impact.
Compared to conventional models, this sealed transformer eliminates the need for an oil conservator. It innovatively compensates for oil volume variations through its flexible corrugated oil tank design, isolating the system from air exposure. This design strategy significantly curtails oil degradation and insulation aging, enhancing operational reliability and negating the need for routine maintenance during standard operations.
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 advancement as a renowned high-tech enterprise specializing in electrical integration. With a dedicated team excelling in research, development, production, and unparalleled customer service, we bring over 15 years of rich industry expertise to the table.
Our impressive product lineup includes cutting-edge high-voltage solid-state soft starters, state-of-the-art capacitor cabinets, both high and low voltage switchgear, advanced gas-insulated switchgear, and robust substations. Our innovative solutions find application across a diverse range of industries, such as energy and chemical sectors, metal smelting, dynamic electric power grids, sophisticated industrial manufacturing, prestigious universities and research institutions, the critical medical and pharmaceutical fields, municipal commerce, vital water conservancy and hydropower projects, extensive road traffic systems, and thriving commercial and residential developments.
Embracing a philosophy of relentless technological innovation and 'smart manufacturing,' we are proud to attract top-tier technical talent, elevating our core competitiveness. Our mission is to deliver unparalleled value to our customers while ambitiously crafting the industry's premier brand. From humble beginnings, we have evolved through perseverance to achieve excellence. Our journey is fueled by a commitment to innovation, championing quality as our lifeline, adopting a market-driven approach, and driving growth via an impeccable reputation and efficient management. Our guiding principles are technology leadership, rigorous management standards, superior quality, and unwavering customer satisfaction, which together fortify our market position. We are devoted to serving China's electric power and grid sectors with an ambitious vision of achieving speed, strength, and heightened goals. With integrity as our bedrock, quality as our top priority, and supreme service as our hallmark, customer satisfaction remains our perpetual pledge. Our steadfast objectives include pursuing excellence, fostering continuous innovation, and cultivating a brand that commands trust. Your recognition empowers us. We extend our heartfelt gratitude to our valued customers, both new and established, for their steadfast support and loyalty. Zhejiang ChaoTai is eager to collaborate with you, hand in hand, to forge 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.