Product Description



Oil Immersed Series Transformer:
Introducing the S11-M Series Fully Sealed Oil Immersed Power Transformer by Chaotai Power, a marvel of engineering excellence offering a trifecta of benefits: low loss, minimal noise, and superior efficiency. This product is a beacon of energy conservation and pollution reduction. Unlike conventional oil-immersed transformers, our fully sealed variant eliminates the need for an oil conservator. The revolutionary design allows for automatic adjustment and compensation of oil volume through the corrugated sheet's elasticity within the oil tank. This design ensures the transformer is completely isolated from ambient air, significantly slowing oil deterioration and insulation aging. This results in enhanced operational reliability and negligible maintenance requirements during standard operations.
1. Power Capacity: 25-2500KVA, accommodating voltage levels of 24KV, 30KV, 33KV, 35KV, 36KV, and custom specifications according to client requirements. 2. Voltage Level: Available at 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Options for Off-circuit or On-load modifications to suit diverse operational needs.
4. Tapping Range: Flexibility with ±5 %, 2x2.5 %, and ±4x2.5 % adjustments for optimal performance.
5. Frequency: Offered in both 50Hz and 60Hz to meet global standards.
6. Phases: Available in both three-phase and single-phase configurations.
7. Connection Symbol: Configurations include Dyn11, Yyn0, or tailored as per client requests.
8. Short-circuit Impedance: Adheres to Standard Impedance requirements ensuring reliability.
9. Altitude: Suited for installations not exceeding 1000m above sea level, and an ambient temperature not exceeding 40°C. Should these conditions not be met, parameters will be adjusted.
in accordance with standard protocols to ensure performance and safety.
Power Capacity: A robust range from 25 to 2500 KVA, fulfilling diverse energy distribution needs.
Voltage levels include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 24KV, 30KV, 33KV, 35KV, 36KV.
Voltage Level:
Type of Voltage Regulation: Choose between Off-circuit or On-load for tailored electrical performance.
Tapping Range: Provides ±5%, ±2x2.5%, and ±4x2.5% adaptability.
Frequency: Options at both 50Hz and 60Hz to ensure compatibility.
Phases: Customizable as either three-phase or single-phase.
Connection Symbol: Available as Dyn11, Yyn0, or customized to meet specific needs.
Short-circuit Impedance: Complies with Standard Impedance to guarantee system stability.
Installation requirements ensure functionality within altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C.
If environmental conditions deviate, we are prepared to fine-tune system parameters in line with industry standards.
Chaotai Power's fully sealed oil immersed power transformer stands out with its low loss, silent operation, and exceptional efficiency. It serves as a cutting-edge solution for energy savings and pollution control.
Our fully sealed transformer revolutionizes the market by eliminating the oil conservator, allowing the oil volume to adjust automatically via the corrugated oil tank's elasticity. This innovation isolates the transformer from air exposure, significantly reducing oil degradation and insulation aging, thereby increasing operational reliability and minimizing routine 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 innovation and excellence in the realm of electrical integration. As a high-tech enterprise, we boast a team of seasoned experts in R&D, production, and service, backed by over 15 years of rich industry experience. Our commitment to cutting-edge solutions and a customer-centric approach sets us apart.
Our extensive product lineup features high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, innovative gas-insulated switchgear, and robust substations. These products are indispensable across a multitude of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, medical and pharmaceutical sectors, municipal commerce, water conservancy and hydropower, road traffic systems, as well as commercial and residential infrastructures.
Guided by a philosophy of technological innovation and 'smart manufacturing,' we are committed to attracting top-tier technical talent to bolster our core competencies. This enhances our ability to offer unparalleled value to our clients and fortify our position as a leading brand in the industry. From our humble beginnings to our current status of excellence, our journey has been marked by a relentless pursuit of innovation. Our modern business strategy is anchored in quality and reputation, ensuring market survival, development, and efficiency through meticulous management. We stand by our quality management principles: 'technology as the guide, standardized management, excellent quality, and customer satisfaction.' This commitment fortifies our market competitiveness and propels us towards ambitious goals in China's electric power and grid sectors. Our bedrock principles: integrity, quality, service, and customer satisfaction, are unwavering. Striving for excellence, continuous innovation, and building trust are the cornerstones of our development goals. Your trust fuels our progress, and we extend our heartfelt gratitude to all our customers for their unwavering support. Zhejiang Chaotai looks forward to forging a brighter future together with you, hand in hand.
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.