Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, a pinnacle of engineering crafted with precision by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer is renowned for its unparalleled features: impressively low energy loss, tranquil operation, and superior efficiency. It epitomizes energy-saving innovation, significantly reducing pollution and minimizing environmental impact. Unlike traditional oil-immersed transformers, this advanced model dispenses with the need for an oil conservator, thanks to the clever elasticity of its corrugated oil tank. This self-regulating system compensates for oil volume changes autonomously, ensuring a hermetically sealed environment that protects the transformer from air exposure. This innovation prevents oil degradation, extends insulation life, and enhances operational reliability, all while eliminating the need for routine maintenance during typical usage scenarios.
1. Power Capacity: Spanning a range from 25 to 2500KVA, with options for 24KV, 30KV, 33KV, 35KV, 36KV, and further bespoke customizations to meet specific customer demands 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Offers versatile Off-circuit and On-load options
4. Tapping Range: Options include ±5%, 2x2.5%, ±4x2.5%, designed to accommodate diverse operational needs
5. Frequency: Selectable options for 50Hz or 60Hz to suit varying power grid requirements
6. Phases: Available in both Three-phase and single-phase configurations, tailored to your system's specifications
7. Connection Symbol: Dyn11, Yyn0 (or fully customizable to meet unique specifications)
8. Short-circuit Impedance: Outfitted with Standard Impedance for optimal performance
9. Operational Conditions: Engineered for altitudes up to 1000m, and ambient temperatures under 40°C. Should these conditions vary, adjustments will be executed in alignment with standard industry protocols.
All modifications will be rigorously applied, ensuring compliance with industry standards.
Power Capacity: An adaptable range between 25 and 2500KVA to cater to varying power needs
Voltage Levels: An extensive selection from 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load options for maximum flexibility
Tapping Range: Selections of ±5%, ±2x2.5%, ±4x2.5% to meet various regulatory requirements
Frequency Options: Choose between 50Hz or 60Hz to match specific grid settings
Phases: Available in versatile Three-phase or single-phase configurations
Connection Symbol: Dyn11, Yyn0 (with customization available upon request)
Short-circuit Impedance: Configured with Standard Impedance for reliable operation
Operational Conditions: Ideally suited for altitudes not surpassing 1000m, with ambient temperatures not exceeding 40°C
In the event of deviation from standard conditions, parameters will be meticulously adjusted while adhering to established guidelines.
The fully sealed oil-immersed power transformer, a marvel of engineering by Chaotai Power, offers incredibly low energy loss, serene operation, and unmatched efficiency. It stands as an extraordinary energy-saving solution, remarkably diminishing pollution.
In contrast to conventional oil-immersed transformers, this fully sealed design eliminates the need for an oil conservator. It adeptly manages oil volume changes through the innovative elasticity of the corrugated oil tank, ensuring the transformer is insulated from air. This vital feature not only curtails oil deterioration and delays insulation aging but also significantly heightens reliability, negating 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. stands as a beacon of technological sophistication and excellence in the exhilarating realm of electrical integration. As a beacon of innovation and a celebrated high-tech enterprise, we take immense pride in our exceptional R&D, production, and service team, which is bolstered by over 15 years of invaluable industry acumen. Our relentless pursuit of unmatched brilliance sets us apart as pioneers in innovation, blazing new trails with unwavering commitment.
Our extensive and diverse array of products spotlights cutting-edge innovations, such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These extraordinary innovations have become indispensable across various sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic, extending their value to both commercial and residential sectors. We take immense pride in our role as catalysts for the future, empowering it with our trailblazing solutions.
Rooted in a philosophy devoted to relentless technological advancement and 'smart manufacturing,' we are wholeheartedly committed to fostering a culture of excellence by integrating top-tier technical talents. This strategic approach amplifies our core strengths, ensuring that we consistently deliver unparalleled service value to our esteemed clients. Our remarkable growth journey is a testament to our ethos: evolving from inception to industry leadership through unwavering dedication. Our business strategy is firmly anchored in innovation, with an unwavering pledge to quality as the foundation of our survival, market reputation as the pathway to growth, and management efficiency as the engine of profitability. We are devoted to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the cornerstones of our quality and talent management endeavors. Our strategic vision aims to elevate our market competitiveness, serving the electric power and grid transmission and distribution sectors across China with aspirations that soar to new heights. Integrity, unmatched quality, exceptional service, and customer satisfaction constitute the essence of our values. We tirelessly strive for excellence, continuously innovating to establish a brand synonymous with trust. The appreciation we receive from our customers fuels our ambition. We express profound gratitude to our cherished customers, both new and loyal, and warmly invite you to join us on a shared journey with Senhang Technology towards a future of boundless potential.
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.