Product Description



Oil Immersed Series Transformer:
Presenting the phenomenal S11-M series, an exquisitely crafted, fully sealed oil-immersed power transformer by Zhejiang Chaotai Complete Equipment Co., Ltd. This elite transformer boasts unmatched characteristics of exceptionally low energy consumption, minimal operational noise, and remarkable efficiency. As a standout energy solution, it significantly diminishes environmental pollutants. Unlike traditional oil-immersed models, this advanced variant eliminates the need for an oil conservator. Its innovative design seamlessly accommodates oil volume fluctuations through the flexibility of its corrugated oil tank, ensuring a complete seal against air exposure. This cutting-edge feature halts oil deterioration, slows insulation wear, and greatly enhances operational dependability, all while abolishing the necessity for maintenance in typical operation scenarios.
1. Power Capacity: Spanning from 25-2500KVA, with options for 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to match customer requirements 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Offered in both Off-circuit or On-load variations for enhanced adaptability
4. Tapping Range: Adjustable at ±5%, 2x2.5%, or ±4x2.5% for precise control
5. Frequency: Available in choices of either 50Hz or 60Hz for tailored performance
6. Phases: Offered in Three-phase or single-phase configurations to suit diverse needs
7. Connection Symbol: Provided as Dyn11, Yyn0, with customization options to accommodate specific requirements
8. Short-circuit Impedance: Designed with Standard Impedance for reliable performance
9. Operational Conditions: Ideally suited for altitudes not exceeding 1000m and ambient temperatures below 40°C. If these conditions are unmet, adjustments in parameters will adhere to standard industry practices.
All necessary modifications will strictly conform to industry benchmarks.
Power Capacity: Available from 25-2500KVA to cater to various needs
Voltage Levels: Ranging across 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV for comprehensive coverage
Voltage Level Overview:
Type of Voltage Regulation: Available in Off-circuit or On-load configurations for versatile applications
Tapping Range: Provided at ±5%, ±2x2.5%, ±4x2.5% for optimal adjustments
Frequency Options: Offered in both 50Hz or 60Hz modes for flexible operation
Phases: Configurations include Three-phase or single-phase to meet varied demands
Connection Symbol: Configurable as Dyn11, Yyn0, with bespoke options accessible upon request
Short-circuit Impedance: Engineered with Standard Impedance for guaranteed effectiveness
Operational Conditions: Engineered for altitudes not exceeding 1000m, with ambient temperatures capped at 40°C
In scenarios where conditions differ, we will execute essential parameter alterations in strict conformance with standard guidelines.
This fully sealed oil-immersed power transformer, a beacon of innovation from Chaotai Power, is designed for minimal energy losses, silently efficient operation, and exceptional performance. It sets the benchmark as a premier energy-preserving solution, offering a substantial reduction in environmental impact.
Setting itself apart from conventional oil-immersed transformers, this fully sealed design dispenses with the oil conservator. It skillfully manages oil volume changes with the elasticity of the corrugated oil tank sheet, keeping the transformer air-sealed. This essential feature not only prevents oil spoilage and insulation decay but also enhances reliability while removing the need for regular 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 luminous beacon of technological excellence and groundbreaking innovation in the field of electrical integration. Celebrated as a premier high-tech enterprise, we proudly boast a stellar team dedicated to research and development, production, and unparalleled services, all underpinned by a rich heritage of more than 15 years of invaluable industry expertise. Our steadfast dedication to excellence positions us as vanguards in innovation, consistently setting new industry standards and benchmarks.
Our expansive and state-of-the-art product portfolio offers trailblazing solutions including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These essential products are pivotal across a multitude of sectors, from the energy and chemical industries to metal smelting, electric power grids, and industrial manufacturing. Furthermore, our influence extends into academia, healthcare, municipal commerce, water management, hydropower, and road traffic, serving both commercial and residential needs. We proudly empower the future with our transformative solutions, making a profound impact across these critical sectors.
Anchored in a philosophy of relentless technological progress and 'smart manufacturing,' we are steadfast in nurturing a culture of excellence by integrating top-tier technical talent and innovative strategies. This strategic dedication enhances our core competencies, ensuring we deliver unmatched service value to our clients. Our growth narrative is a testament to our core values: evolving from humble origins to industry leadership through unwavering dedication and innovation. Our business strategy remains centered on quality as the cornerstone of survival, market reputation as the avenue for development, and management efficiency as the key to profitability. Our pledge is to employ 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the foundations of our quality and talent management initiatives. Our strategic vision focuses on elevating our market competitiveness, serving China's electric power, grid transmission, and distribution sectors with aspirations that aim higher, reach further, and achieve more. Integrity, unmatched quality, exceptional service, and customer satisfaction are at the heart of our values. Our relentless pursuit of excellence drives us to continuously innovate, establishing our brand as synonymous with trust. The recognition of our esteemed customers fuels our ambition. We extend heartfelt gratitude to our loyal customers, both new and longstanding, and warmly invite you to join Zhejiang Chaotai on a shared journey towards a brighter tomorrow.
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.