Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil-immersed power transformer, meticulously designed and expertly manufactured by Zhejiang Chaotai Complete Equipment Co., Ltd. This extraordinary transformer distinguishes itself with outstanding features such as remarkably low energy loss, whisper-quiet operation, and unmatched efficiency. It stands as a paragon of energy conservation, drastically slashing pollution and minimizing environmental impact. Diverging from traditional oil-immersed transformers, this cutting-edge model eliminates the necessity for an oil conservator. Through the ingenious elasticity of the corrugated oil tank, it autonomously regulates and compensates for oil volume fluctuations, maintaining a perfectly sealed environment that shields the transformer from air exposure. This transformative feature effectively prevents oil degradation, significantly prolongs insulation lifespan, and substantially boosts operational reliability—all without requiring routine maintenance during standard usage.
1. Power Capacity: Our transformers offer a robust range from 25-2500KVA, accommodating voltage requirements of 24KV, 30KV, 33KV, 35KV, 36KV, and are fully customizable to meet unique customer specifications. 2. Voltage Level: Choose from a spectrum including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV to cater to diverse power needs. 3. Type of Voltage Regulation: We provide both Off-circuit and On-load regulation options for superior adaptability.
4. Tapping Range: Our tapping range options include ±5%, 2x2.5%, and ±4x2.5%, offering flexibility for a variety of applications.
5. Frequency: Tailor your experience with options for either 50Hz or 60Hz selection to suit regional power standards.
6. Phases: Our transformers are available in both Three-phase and single-phase configurations, providing options for different operational setups.
7. Connection Symbol: Standard offerings include Dyn11 and Yyn0, with full customization available to align with specific requirements.
8. Short-circuit Impedance: Our transformers feature standard impedance, ensuring reliable and consistent performance.
9. Operational Conditions: Designed to thrive at altitudes up to 1000m and ambient temperatures below 40°C. If your conditions differ, we promise to adjust parameters following industry-standard protocols.
All adjustments will strictly adhere to industry standards.
Power Capacity: Offering a broad spectrum from 25-2500KVA to suit diverse power demands.
Voltage Levels: Select from a wide array of levels including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV for tailored energy distribution.
Voltage Level Overview:
Type of Voltage Regulation: Available choices include Off-circuit or On-load options to meet your voltage regulation needs.
Tapping Range: Our range includes options like ±5%, ±2x2.5%, ±4x2.5%, allowing for versatile application.
Frequency Options: Choose either 50Hz or 60Hz to match your electrical infrastructure.
Phases: Available in both Three-phase and single-phase to cater to diverse operational requirements.
Connection Symbol: Offered as Dyn11 and Yyn0, customizable upon request to fit your specific electrical configuration.
Short-circuit Impedance: Features standard impedance to ensure stable and efficient operation.
Operational Conditions: Built to excel at altitudes up to 1000m, and temperatures not exceeding 40°C, with adjustments available for other conditions as per guidelines.
Should conditions deviate from the norm, necessary parameter adjustments will be implemented, adhering to standard guidelines.
The fully sealed oil-immersed power transformer, a masterpiece of innovation by Chaotai Power, excels with exceptionally low energy loss, silent operation, and superior efficiency. It serves as an exceptional energy-saving solution that profoundly reduces pollution.
Unlike conventional oil-immersed transformers, this fully sealed design forgoes the need for an oil conservator. It expertly manages oil volume changes through the elastic capabilities of the corrugated oil tank sheet, ensuring the transformer remains insulated from air. This critical feature not only prevents oil deterioration and delays insulation aging but also significantly enhances reliability, eliminating 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. represents the pinnacle of technological advancement in the ever-evolving realm of electrical integration. Proudly standing as a leading high-tech enterprise, we boast an esteemed R&D, production, and service team with over 15 years of profound industry insight. Our steadfast dedication to achieving extraordinary excellence sets us apart as a beacon of innovation.
Our comprehensive and diverse product lineup showcases cutting-edge innovations, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These remarkable products are indispensable across an array of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic, while also serving vital roles in both commercial and residential applications. We take immense pride in empowering the future through our revolutionary solutions.
Driven by a relentless pursuit of technological progress and 'smart manufacturing,' we are wholeheartedly committed to fostering a culture of excellence through the integration of elite technical talents. This strategic approach amplifies our core strengths, guaranteeing we consistently deliver unparalleled service value to our clients. Our extraordinary growth journey is a testament to our ethos: evolving from inception to industry leadership through unwavering dedication. Our business strategy is firmly rooted in innovation, with an unyielding commitment to quality as the foundation of our sustainability, market reputation as the catalyst for development, and management efficiency as the engine of profitability. We are devoted to harnessing 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management initiatives. Our strategic vision is to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that reach extraordinary heights. Integrity, unparalleled quality, outstanding service, and customer satisfaction are the essence of our values. We persistently strive for excellence, continuously innovating to establish a brand synonymous with trust. The appreciation of our customers fuels our ambition. We extend our deepest gratitude to our loyal customers, both new and longstanding, and warmly invite you to embark on a shared journey with Senhang Technology 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.