Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series fully sealed oil-immersed power transformer, a masterpiece of engineering by Zhejiang Chaotai Complete Equipment Co., Ltd. This extraordinary transformer excels with its unparalleled features of low energy loss, whisper-quiet operation, and remarkable efficiency, presenting itself as an exemplary energy-saving solution. It is designed to minimize environmental impact, significantly cutting down on pollution. Unlike traditional oil-immersed transformers, this state-of-the-art model foregoes the need for an oil conservator. Its intelligent design autonomously compensates for oil volume fluctuations through the elasticity of the corrugated oil tank, effectively sealing the transformer from air exposure. This ingenious feature prevents oil degradation, slows insulation aging, and greatly enhances operational reliability, all while eliminating the need for any maintenance during regular operations.
1. Power Capacity: 25-2500KVA, available in 24KV, 30KV, 33KV, 35KV, and 36KV capacities, with further customization available to meet specific requirements 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV 3. Type of Voltage Regulation: Available in both Off-circuit and On-load options
4. Tapping Range: Options of ±5%, 2x2.5%, ±4x2.5% for versatile adjustments
5. Frequency: Choose between 50Hz or 60Hz to match your requirements
6. Phases: Designed for both Three-phase and single-phase adaptations
7. Connection Symbol: Available in Dyn11, Yyn0 configurations (customizable as per need)
8. Short-circuit Impedance: Engineered to meet Standard Impedance requirements
9. Operational Conditions: Suitable for altitudes not exceeding 1000m and ambient temperatures below 40°C. Should these conditions not be met, parameter adjustments will be made following standard protocols.
All adjustments will strictly adhere to industry standards to ensure reliability and performance.
Power Capacity: Extends from 25-2500KVA to suit a range of power needs
Voltage Levels: Extensive options including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV
Voltage Level Overview: An array of voltage levels tailored for diverse applications
Type of Voltage Regulation: Tailored to Off-circuit or On-load specifications for precise control
Tapping Range: Offers ±5%, ±2x2.5%, ±4x2.5% options for precise voltage tuning
Frequency Options: Offers choice of 50Hz or 60Hz to align with system requirements
Phases: Configurable for Three-phase or single-phase systems
Connection Symbol: Configurable in Dyn11, Yyn0 (with customization available upon request)
Short-circuit Impedance: Designed to meet Standard Impedance requirements for assured performance
Operational Conditions: Optimized for altitudes not exceeding 1000m and temperatures up to 40°C
Should operational conditions deviate, necessary parameter adjustments will be made in accordance with standard guidelines to ensure optimal operation.
The fully sealed oil-immersed power transformer by Chaotai Power represents the pinnacle of technological advancement, featuring low energy loss, quiet operation, and remarkable efficiency. It offers a premier energy-saving solution, significantly reducing environmental pollution.
Breaking away from conventional designs, this fully sealed transformer eliminates the need for an oil conservator. It automatically regulates oil volume changes utilizing the elasticity of the corrugated oil tank sheet, ensuring the transformer remains isolated from air. This crucial feature not only prevents oil degradation and slows insulation aging but also significantly boosts reliability, removing the necessity 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. emerges as a luminary in the field of electrical integration, exemplifying technological brilliance and innovation. As a high-tech enterprise of distinction, our company is backed by a committed R&D, production, and service team, empowered with over 15 years of rich industry expertise. Our unwavering pursuit of excellence propels us to the forefront of innovation, setting benchmarks in the industry.
Our expansive product lineup showcases state-of-the-art solutions, including high-voltage solid-state soft starters, capacitor cabinets, advanced high and low voltage switchgear, gas-insulated switchgear, and modern substations. These pioneering products serve a vast array of sectors such as energy, chemical processing, metal smelting, electrical power grids, industrial manufacturing, academia, healthcare facilities, municipal commerce, water resource management, hydropower, road traffic systems, and extend their utility to both commercial and residential domains. We take pride in illuminating the future with our groundbreaking and transformative solutions.
Driven by a philosophy of ceaseless technological innovation and 'smart manufacturing,' we are committed to nurturing a culture of excellence by integrating top-tier technical talent. This strategic emphasis enhances our core competencies, ensuring unparalleled value and service for our clients. Our growth journey embodies our ethos: rising from inception to industry leadership through unwavering commitment and passion. Our business strategy is rooted in continuous innovation, with quality being the cornerstone of survival, market reputation the conduit to progress, and management efficiency the gateway to profitability. We pledge to uphold 'technology as a guide, systematic management, superior quality, and customer satisfaction' as the pillars of our quality and talent management strategies. Our strategic vision focuses on amplifying market competitiveness, serving China's electric power and transmission sectors with ambitions that are faster, stronger, and loftier. Integrity, unmatched quality, exceptional service, and customer satisfaction are our core values. We tirelessly pursue excellence, continuously innovating to establish a brand synonymous with trust and reliability. The recognition of our customers fuels our drive. We extend our heartfelt gratitude to our devoted customers, both new and long-term, and warmly welcome you to join Zhejiang Chaotai Complete Equipment on a shared journey towards a brighter 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.