Product Description



Oil Immersed Series Transformer: Experience the pinnacle of technological advancement with our S11-M series, a fully sealed oil-immersed power transformer that sets new standards in energy efficiency and reliability.
Introducing the S11-M series fully sealed oil-immersed power transformer, a marvel of engineering developed and produced by Chaotai Power. This transformer boasts low loss, low noise, and high efficiency, delivering outstanding energy-saving performance and minimizing environmental impact. Unlike conventional oil-immersed transformers, this innovative design eliminates the need for an oil conservator. The oil volume changes are seamlessly adjusted and compensated by the corrugated oil tank's elasticity, ensuring the transformer remains isolated from air exposure. This feature significantly slows the deterioration of oil and insulation aging, enhancing operational reliability and minimizing maintenance requirements during regular operation.
1. Power Capacity: Ranges from 25-2500KVA to suit diverse energy requirements, with voltage levels of 24KV, 30KV, 33KV, 35KV, 36KV, and additional options tailored to customer specifications. 2. Voltage Level: Choose from 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV for versatile application. 3. Type of Voltage Regulation: Available in Off-circuit or On-load configurations for optimal performance.
4. Tapping Range: Offers flexibility with ±5%, ±2x2.5%, and ±4x2.5% options for precise adjustments.
5. Frequency: Compatible with both 50Hz and 60Hz systems, catering to global standards.
6. Phases: Available in Three-phase or Single-phase configurations to meet your electrical needs.
7. Connection Symbol: Choose between Dyn11, Yyn0, or customize as per your requirements for seamless integration.
8. Short-Circuit Impedance: Designed with Standard Impedance for reliable performance.
9. Altitude: Engineered for optimal performance at altitudes not exceeding 1000 meters, with ambient temperatures up to 40°C.
10. Adaptability: If existing conditions exceed these limits, we will adjust parameters in accordance with industry standards to ensure continued performance.
Power Capacity: Available from 25-2500KVA, catering to a wide range of power demands.
Voltage Range: Comprising IOkYAky 1 OY I a, D SKY, 2OKY, 22KY, 2ANV, 30KV, 33KV, 35KV, 3GKV, covering essential applications.
Voltage Level: Offering a spectrum of choices to suit specific voltage requirements.
Type of Voltage Regulation: Select between Off-circuit or On-load to ensure precise control and efficiency.
Tapping Range: Flexibility with options of ±5%, ±2x2.5%, ±4x2.5% for tailored performance.
Frequency: Suitable for both 50Hz or 60Hz, accommodating various regional standards.
Phases: Available in both Three or Single-phase to match system specifications.
Connection Symbol: Options include Dyn11, Yyn0, with customization available to meet specific needs.
Short-Circuit Impedance: Adhering to Standard Impedance for dependable operation.
Altitude: Maximum performance at altitudes up to 1000 meters, with ambient temperatures up to 40°C.
Adaptability: Should standard conditions not be met, we will tailor parameters according to industry standards to maintain excellence.
Our fully sealed oil-immersed power transformer, crafted by Chaotai Power, is an epitome of modern efficiency with its low loss, low noise, and high efficiency. It delivers remarkable energy-saving effects while reducing environmental impact.
In comparison to traditional oil-immersed transformers, our fully sealed variant eliminates the oil conservator. Changes in oil volume are expertly managed through the elasticity of the corrugated oil tank, maintaining isolation from air. This innovation arrests oil degradation and insulation aging, significantly boosting operational reliability and eliminating the need for 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 tall as a beacon of innovation in the realm of electrical integration. As a pioneering high-tech enterprise, we pride ourselves on a dedicated team of R&D, production, and service professionals, boasting over 15 years of unparalleled industry expertise.
Our diverse and cutting-edge product line includes high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, as well as advanced gas-insulated switchgear and substations. These products are integral to an array of sectors, finding applications in energy and chemical industries, metal smelting, power grids, and industrial manufacturing. Our solutions extend to universities, research institutions, the medical and pharmaceutical sectors, municipal commerce, water conservancy and hydropower, road traffic management, and both commercial and residential areas.
Firmly rooted in the ethos of 'smart manufacturing' and relentless technological innovation, we are on a mission to attract top-tier technical talent, bolstering our core competitiveness. Our journey from inception to excellence is marked by a steadfast commitment to quality, reputation-driven growth, and efficiency through astute management. Our guiding principle is 'technology as the beacon, standardized management, superior quality, and ultimate customer satisfaction.' We aim to dominate China's power transmission and distribution landscape with our swift, robust, and top-tier solutions. Our foundation lies in integrity, our standard is quality, our service is unparalleled, and our drive is customer satisfaction. As we pursue excellence and continuous innovation, we dedicate ourselves to building a brand synonymous with trust. Your recognition fuels our passion, and we express our deepest gratitude to our cherished patrons, both new and old. Senhang Technology warmly invites you to join hands with us as we craft a future filled with promise and prosperity.
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.