Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil immersed power transformer, crafted by Chaotai Power, embodies the pinnacle of advanced engineering. This remarkable transformer boasts unparalleled advantages including low loss, reduced noise, and exceptional efficiency, ensuring a significant energy-saving impact while minimizing environmental pollution. Unlike conventional oil immersed transformers, our fully sealed design eliminates the need for an oil conservator. The oil volume variation is seamlessly and automatically adjusted via the elasticity of the corrugated sheet within the corrugated oil tank. By isolating the transformer from air exposure, it effectively prevents and decelerates oil deterioration and insulation aging, thereby enhancing operational reliability and negating the need for routine maintenance.
1. Power Capacity: Ranges from 25-2500KVA with voltage levels including 24KV, 30KV, 33KV, 35KV, 36KV, and tailored options based on customer requirements.
4. Tapping Range: Offers flexibility with options such as ±5%, ±2x2.5%, and ±4x2.5%.
5. Frequency: Available in standard options of 50Hz or 60Hz to accommodate diverse applications.
6. Phases: Designed to cater to both three-phase and single-phase systems.
7. Connection Symbol: Standard options include Dyn11 and Yyn0, with custom configurations available upon request.
8. Short-Circuit Impedance: Engineered to meet standard impedance requirements.
9. Altitude: Suitable for installations not exceeding 1000m, with ambient temperatures not exceeding 40°C. If these conditions are not met, we will adjust parameters in accordance with standard regulations.
Standards: Adherence to industry standards ensures optimal performance and reliability.
Power Capacity: Offers a robust range from 25-2500KVA to meet various power distribution needs.
Voltage Levels: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV.
Voltage Level: Comprehensive options ensure compatibility with diverse electrical systems.
Type of Voltage Regulation: Available in both Off-circuit and On-load configurations for versatile applications.
Tapping Range: Provides adaptability with ranges of ±5%, ±2x2.5%, and ±4x2.5% to optimize performance.
Frequency: Choose between 50Hz and 60Hz to ensure seamless integration into various systems.
Phases: Supports both three-phase and single-phase setups, offering flexibility in design.
Connection Symbol: Available configurations include Dyn11 and Yyn0, with customizable options.
Short-Circuit Impedance: Built to meet standard impedance regulations for reliability and safety.
Altitude: Designed for use up to 1000m above sea level with an ambient temperature ceiling of 40°C.
In cases where conditions exceed stated parameters, our team will adjust configurations to align with industry standards.
Designed and manufactured by Chaotai Power, our fully sealed oil immersed power transformer stands out with its low loss, minimal noise, and superior efficiency. It delivers outstanding energy savings and significantly reduces environmental pollution.
Our fully sealed transformer distinguishes itself from ordinary oil immersed models by eliminating the oil conservator. The innovative design allows automatic adjustment of oil volume through the corrugated sheet's elasticity in the corrugated oil tank. This isolation from air exposure helps prevent and slow down oil deterioration and insulation aging, enhancing operational reliability and eliminating the need for maintenance during normal operation.
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 beacon of innovation and excellence in the realm of electrical integration. As a distinguished high-tech enterprise, we boast a dedicated R&D, production, and service team enriched with over 15 years of industry expertise.
Our diverse array of cutting-edge products includes high-voltage solid-state soft starters, sophisticated capacitor cabinets, robust high and low voltage switchgear, advanced gas-insulated switchgear, and versatile substations. These innovative solutions are powering a multitude of sectors, encompassing the dynamic energy and chemical industries, resilient metal smelting, expansive electric power grids, and industrial manufacturing. Our reach extends to esteemed universities and research institutions, vital medical and pharmaceutical sectors, as well as municipal commerce. We make a significant impact in water conservancy and hydropower, facilitate efficient road traffic systems, and enhance both commercial and residential environments.
Our unwavering commitment to technological innovation is deeply embedded in our development philosophy of 'smart manufacturing.' By strategically recruiting top-tier technical talent, we are enhancing our core competitiveness to offer unparalleled services to our customers, aiming to establish the preeminent brand in the industry. Since inception, our journey has been one of transformative progress—evolving from a nascent entity to an exceptional leader. We steadfastly embrace a modern business ethos, ensuring quality is our survival, market orientation fuels our growth, reputation drives our development, and management sharpens our efficiency. Guided by technology, we are devoted to standardized management and superior quality, with customer satisfaction at the heart of our endeavors. Our mission is to elevate market competitiveness and serve the transmission and distribution fields of China's electric power and grid with ambition and precision. Integrity serves as our foundation, quality as our crown jewel, and service as our highest calling, with customer satisfaction as our eternal mission. We pursue excellence with relentless innovation, striving to forge a trusted brand. Your trust and recognition propel us forward. We extend heartfelt gratitude to our cherished new and loyal customers for their unwavering support, as we, Senhang Technology, look forward to forging a prosperous future together.
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.