Product Description



Oil Immersed Series Transformer: Cutting-edge engineering for superior performance.
The S11-M series fully sealed oil immersed power transformer by Chaotai Power is a pinnacle of modern technology, offering outstanding advantages such as low loss, minimal noise, and exceptional efficiency. Designed for optimal energy conservation, it significantly reduces pollution compared to traditional transformers. This advanced transformer eliminates the need for an oil conservator, with its innovative corrugated oil tank automatically adjusting the oil volume through the elasticity of its sheets. Completely isolated from atmospheric air, it dramatically slows the oil's deterioration and insulation aging, thereby enhancing operational reliability and eliminating the need for maintenance during normal operation.
1. Power Capacity: Providing a robust range of 25-2500KVA, with voltage levels spanning 24KV, 30KV, 33KV, 35KV, 36KV, and custom options tailored to your specifications. 2. Voltage Level: Includes a diverse selection of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Versatile options available—Off-circuit or On-load.
4. Tapping Range: Flexible settings with ±5%, 2x2.5%, ±4x2.5% options for tailored performance.
5. Frequency: Adjustable to both 50Hz or 60Hz for global compatibility.
6. Phases: Configurable to either three-phase or single-phase to suit various needs.
7. Connection Symbol: Customizable to Dyn11, Yyn0, or as requested for seamless integration.
8. Short-circuit Impedance: Engineered with standard impedance for optimal safety and performance.
9. Altitude and Temperature: Ideal for altitudes not exceeding 1000m and ambient temperatures below 40°C. Adjustments available if these conditions are surpassed.
In accordance with standard guidelines, we can adjust the parameters to meet extreme conditions.
Power Capacity: Spanning from 25 to an impressive 2500KVA.
Voltage Level: Offering a wide spectrum from 10KV up to 36KV, tailored to your exact needs.
Voltage Level: Comprehensive range to meet diverse requirements.
Type of Voltage Regulation: Selectable between Off-circuit and On-load for precision control.
Tapping Range: Precision tuning with ±5%, ±2x2.5%, ±4x2.5% options.
Frequency: Designed to operate at 50Hz or 60Hz, catering to global standards.
Phases: Versatile configuration, available in both three or single phases.
Connection Symbol: Tailored to Dyn11, Yyn0, or any requested specification for perfect compatibility.
Short-circuit Impedance: Standardized for robust and secure performance.
Operating Conditions: Suitable for altitudes up to 1000m and temperatures not exceeding 40°C.
For extreme conditions, we ensure compliance by modulating parameters to adhere to standards.
Chaotai Power's fully sealed oil immersed transformers shine with their low loss, minimal noise, and outstanding efficiency, providing remarkable energy-saving benefits and pollution reduction.
Ingeniously designed, the fully sealed transformer by Chaotai forgoes the traditional oil conservator. It features an innovative system where the oil volume changes are dynamically managed by the corrugated oil tank's elastic sheets. This design ensures isolation from air, preventing oil degradation and insulation aging, thereby significantly boosting operational reliability and eliminating 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 in the realm of electrical integration. Embracing the essence of a high-tech enterprise, we proudly present a seasoned team of R&D, production, and service experts, boasting an impressive legacy of over 15 years in the industry.
Our distinguished portfolio showcases a range of advanced solutions including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and cutting-edge substations. Our versatile products illuminate and empower a multitude of sectors such as energy, chemical industries, metal smelting, and electric power grids. They are also indispensable in industrial manufacturing, educational and research institutions, medical and pharmaceutical domains, municipal commerce, water conservancy and hydropower projects, road traffic systems, and both commercial and residential environments.
With a resolute commitment to technological innovation and the philosophy of 'smart manufacturing,' we are dedicated to attracting top-tier technical talents to bolster our core competitiveness. Our aim is to deliver unparalleled value to our customers and to establish the premier brand in the industry. Since our inception, Zhejiang ChaoTai has embarked on a transformative journey from humble beginnings to industry excellence. We are steadfast in our innovation, adhering to a business model that prioritizes quality for survival, market-orientation for expansion, reputation for growth, and management for efficiency. Anchored by our guiding principles—'technology as the guide, standardized management, excellent quality, and customer satisfaction'—we continually enhance our market competitiveness. Our mission is to serve China's electric power and grid transmission and distribution fields with unprecedented speed, strength, and ambition. Integrity is the foundation we stand on, quality is our highest standard, and service is our highest priority. Customer satisfaction remains our enduring goal. We are driven by a pursuit of excellence, relentless innovation, and a commitment to building a brand synonymous with trust. Your recognition fuels our passion. We extend our heartfelt gratitude to all our loyal customers, both new and old, for their unwavering support and affection. Zhejiang ChaoTai looks forward to forging a brighter future together with you.
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.