Product Description



Oil Immersed Series Transformer:
Zhejiang Chaotai Complete Equipment Co., Ltd. proudly introduces the S11-M Series Fully Sealed Oil Immersed Power Transformer, a paragon of modern engineering. Crafted for excellence, this transformer is synonymous with low loss, minimal noise, and supreme efficiency, promoting remarkable energy conservation while mitigating environmental impact. Unlike typical transformers, this innovative model eliminates the need for an oil conservator, thanks to the adaptive elasticity of its corrugated oil tank, which dynamically adjusts and compensates for oil volume changes. Fully isolated from the air, it guarantees prolonged insulation integrity and oil preservation, ensuring reliable operation with minimal maintenance.
1. Power Capacity: From a versatile 25KVA to a robust 2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, or tailored to your specifications. 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Available in Off-circuit or On-load variations.
4. Tapping Range: Precision engineered at ±5%, with options for ±2x2.5% and ±4x2.5% to suit varied demands.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Available in both three-phase and single-phase configurations.
7. Connection Symbol: Configurable as Dyn11, Yyn0, or as per specific requirements.
8. Short-circuit Impedance: Engineered to standardized impedance specifications for optimal performance.
9. Altitude: Suitable for installations at altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C. Should conditions fall outside this range,
modifications will be made to ensure compliance with standard specifications.
Power Capacity: Versatile range from 25KVA to 2500KVA.
Voltage Levels: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV.
Voltage Level: Comprehensive options for various applications.
Type of Voltage Regulation: Choose between Off-circuit or On-load for tailored energy management.
Tapping Range: Crafted with precision at ±5%, and versatile options of ±2x2.5%, ±4x2.5%.
Frequency: Designed for seamless integration with 50Hz or 60Hz systems.
Phases: Available in three-phase or single-phase configurations for diverse applications.
Connection Symbol: Customizable with Dyn11, Yyn0, or as specified.
Short-circuit Impedance: Standardized to ensure optimal efficiency and reliability.
Altitude: Designed for up to 1000m with ambient temperatures not exceeding 40°C.
For installations that exceed these conditions, our parameters can be adjusted to adhere to industry standards.
The Fully Sealed Oil Immersed Power Transformer by Chaotai Power epitomizes engineering excellence with its low loss, low noise, and unmatched efficiency, fostering substantial energy conservation and reduced environmental impact.
In comparison to traditional oil immersed transformers, our fully sealed model forsakes the oil conservator, utilizing the corrugated oil tank's elasticity to naturally adjust and stabilize oil volume changes. This design ensures the transformer remains air-isolated, significantly delaying oil degradation and insulation aging, thereby enhancing 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 at the forefront as a distinguished high-tech enterprise, dedicated to pioneering advancements in electrical integration. With a rich reservoir of professional expertise, our R&D, production, and service teams boast over 15 years of illustrious experience, propelling us to the apex of innovation and excellence.
Proudly presenting our flagship offerings, we specialize in a comprehensive range of products including high-voltage solid-state soft starters, innovative capacitor cabinets, and versatile high and low voltage switchgear. Our state-of-the-art gas-insulated switchgear and robust substations are revolutionizing industries. Our solutions are omnipresent across sectors such as energy, chemical industries, and metal smelting, to electric power grids and industrial manufacturing. We cater to a diverse clientele, spanning universities, research institutions, the medical and pharmaceutical sectors, municipal commerce, and beyond, encompassing water conservancy, hydropower, road traffic, as well as commercial and residential domains.
At Zhejiang Chaotai, technological innovation is our creed, embodied in our strategic commitment to 'smart manufacturing.' By attracting top-tier technical talent, we continuously elevate our core competencies, delivering unparalleled value to customers while aspiring to establish ourselves as the industry's premier brand. From our inception, we've journeyed from humble beginnings to a beacon of excellence. Our business philosophy centers on quality-driven survival, reputation-fueled growth, and efficiency-led management. We are steadfast in our dedication to 'technology as the guide, standardized management, superior quality, and ultimate customer satisfaction.' These principles fortify our market presence, empowering us to excel in China's electric power and grid sectors with ambition and agility. Our ethos is anchored in integrity, uncompromising quality, and exemplary service, with customer satisfaction as our perpetual mission. Committed to excellence, driven by innovation, and aspiring to be a brand synonymous with trust, we tirelessly pursue these developmental goals. Your support and trust fuel our progress. We extend heartfelt gratitude to our esteemed customers, both new and long-standing, and eagerly anticipate the opportunity to collaborate with you towards a brighter, more promising 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.