Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series from Chaotai Power, an innovation in oil immersed power transformers. This fully sealed marvel boasts remarkable attributes such as low loss, minimal noise, and exceptional efficiency, promoting unparalleled energy-saving benefits while curtailing pollution. Unlike its traditional counterparts, this advanced transformer forgoes the oil conservator, allowing for automatic adjustment and compensation of oil volume via the corrugated oil tank's elasticity. Its air isolation ensures prolonged oil integrity, reduces insulation aging, and significantly enhances operational reliability, minimizing maintenance during standard operations.
1. Power Capacity: Ranges from 25KVA to an impressive 2500KVA, with voltage levels of 24KV, 30KV, 33KV, rising up to 35KV, 36KV and customizable as per customer requirements. 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation for optimal performance.
4. Tapping Range: Offers flexibility with ±5%, ±2x2.5%, or ±4x2.5% adjustments.
5. Frequency: Available in both 50Hz and 60Hz variants to suit different standards.
6. Phases: Available in both three-phase and single-phase configurations.
7. Connection Symbol: Options include Dyn11 and Yyn0, or designed as requested to meet specific needs.
8. Short-circuit Impedance: Engineered to standard impedance specifications for reliable performance.
9. Altitude: Suitable for altitudes not exceeding 1000m, ensuring operational excellence in a variety of climates. Ambient temperature should not exceed 40°C. If these conditions aren't met, parameters will be modulated accordingly.
Our transformers are designed to adapt. If environmental conditions deviate, we ensure parameter modulation to align with industry standards.
Power Capacity: Available from 25KVA to 2500KVA to meet diverse energy needs.
Voltage Options: Offering a wide range of voltage levels including 10KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV to cater to various applications.
Voltage Level: Flexibility with multiple voltage options to suit a variety of power requirements.
Voltage Regulation Type: Designed for both Off-circuit and On-load regulation to ensure optimal performance in any scenario.
Tapping Range: Customizable options with ±5%, ±2x2.5%, and ±4x2.5% for precise control.
Frequency: Choose from 50Hz or the internationally preferred 60Hz.
Phases: Flexible configurations available in three-phase or single-phase as per requirement.
Connection Symbol: Versatile options including Dyn11 and Yyn0, or as specified to meet exact needs.
Short-circuit Impedance: Built to standard specifications for consistent and reliable use.
Designed for altitudes below 1000m and ambient temperatures not exceeding 40°C.
Should these conditions not be met, our transformers are adaptable with parameter customization to meet standards.
Discover the fully sealed oil immersed power transformer by Chaotai Power, celebrated for its low loss, low noise, and outstanding efficiency. Experience substantial energy conservation and a reduced environmental footprint.
A step above traditional transformers, our fully sealed design eliminates the oil conservator, with oil volume adjustments handled by the corrugated oil tank's elasticity. This design is air-isolated to protect against oil degradation and insulation aging, ensuring heightened reliability and ease of maintenance during normal 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 as a beacon of innovation in the realm of electrical integration. As a high-tech enterprise, we boast a commendable legacy of over 15 years, driven by an elite team dedicated to research, development, production, and service excellence.
Our diverse product line showcases prowess in manufacturing high-voltage solid-state soft starters, advanced capacitor cabinets, state-of-the-art high and low voltage switchgear, as well as sophisticated gas-insulated switchgear and substations. These offerings power a multitude of sectors, ranging from energy and chemical industries to metal smelting, electric power grids, and beyond. Our solutions illuminate industrial manufacturing, uplift academia and research, support the medical and pharmaceutical industries, and bolster municipal commerce. We are pivotal in water conservancy, hydropower projects, road traffic management, and enhance living in commercial and residential areas.
Our commitment to pioneering technological advancements embodies the spirit of 'smart manufacturing.' By actively recruiting top-tier technical talent, we significantly boost our core competitiveness. This commitment not only elevates our service value but also aspires to position us as an industry-leading brand. From our humble beginnings, Zhejiang Chaotai has achieved remarkable growth—transforming from inception to excellence. Our steadfast dedication to innovation is complemented by a modern business ethos that champions quality as the cornerstone for survival, market orientation as the catalyst for development, reputation as the pathway to progress, and management efficiency as the vehicle for success. Firmly rooted in the principles of 'technology-led guidance, standardized management, superior quality, and customer satisfaction,' we aim to enhance our market competitiveness. Our mission is to serve China's transmission and distribution sector with unparalleled speed, strength, and ambition. Integrity is our bedrock, quality our hallmark, and unparalleled service is our promise. The satisfaction of our customers is our perpetual pursuit. We strive for excellence, foster continuous innovation, and are dedicated to building a brand that commands trust and loyalty. Your support fuels our journey. We express our heartfelt gratitude to our esteemed new and long-standing clients for their unwavering support and affection. Together with Senhang Technology, we eagerly anticipate forging a brighter, more prosperous 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.