Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, expertly designed and innovatively crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This transformative piece of technology is renowned for its incredibly low energy loss, whisper-quiet operation, and unrivaled efficiency. It stands as an icon of energy conservation by significantly reducing pollution and minimizing environmental impact. Departing from conventional oil-immersed transformers, this avant-garde model ingeniously dispenses with the need for an oil conservator. Its cleverly engineered corrugated oil tank autonomously regulates and compensates for oil volume fluctuations, ensuring a hermetically sealed environment that shields the transformer from air exposure. This revolutionary feature not only prevents oil degradation but also extends the longevity of insulation materials, dramatically enhances operational reliability, and requires no routine maintenance under standard conditions.
1. Power Capacity: Ranging from 25-2500KVA, with versatile options such as 24KV, 30KV, 33KV, 35KV, 36KV, and customizable configurations to precisely meet customer specifications. 2. Voltage Level: Available in a spectrum of levels including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Offers both Off-circuit and On-load options, providing adaptable functionality for diverse applications.
4. Tapping Range: Features an array of choices such as ±5%, 2x2.5%, or ±4x2.5%, catering to a variety of power requirements.
5. Frequency: Available in both 50Hz and 60Hz, accommodating different regional standards effectively.
6. Phases: Offered in both Three-phase and single-phase configurations, ensuring compatibility with various applications.
7. Connection Symbol: Options include Dyn11, Yyn0, or can be tailored to your precise specifications with ease and flexibility.
8. Short-circuit Impedance: Incorporates Standard Impedance, ensuring consistent and reliable performance.
9. Operational Conditions: Expertly engineered to operate seamlessly at altitudes up to 1000m with ambient temperatures not exceeding 40°C. Should these conditions vary, adjustments will be made per standard protocols to maintain optimal performance.
All modifications will faithfully adhere to industry standards to ensure superior performance and reliability.
Power Capacity: Spanning from 25-2500KVA, designed to meet a wide array of energy demands.
Voltage Levels: Offered in a comprehensive range including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, allowing for extensive adaptability.
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load variants, providing adaptable control for various applications.
Tapping Range: Delivers options such as ±5%, ±2x2.5%, ±4x2.5%, tailored to meet specific requirements efficiently.
Frequency Options: Offers both 50Hz and 60Hz to align with local standards seamlessly.
Phases: Available in both Three-phase and single-phase, offering versatility for diverse applications.
Connection Symbol: Standard configurations include Dyn11, Yyn0, with the possibility of fully customizing to meet specific needs.
Short-circuit Impedance: Provides Standard Impedance, ensuring dependable and consistent operation.
Operational Conditions: Designed for optimal performance at altitudes up to 1000m and temperatures below 40°C, with adjustments available as per standard guidelines if necessary.
If operational conditions deviate, parameter adjustments will be executed in strict accordance with standard guidelines to maintain peak performance.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative excellence, excels with remarkably low energy consumption, silent operation, and superior efficiency. It is a powerful energy-saving device that significantly cuts down pollution, contributing to a cleaner environment.
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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

At the forefront of electrical integration, Zhejiang ChaoTai Complete Equipment Co., Ltd. shines as a beacon of technological prowess. Revered as a high-tech enterprise, we are equipped with a top-notch team specializing in research, development, production, and service, bolstered by over 15 years of rich industry experience. Our unwavering dedication to excellence distinguishes us as trailblazers of innovation.
Our extensive and versatile product range is a testament to our dedication to innovation, featuring state-of-the-art products such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These exceptional products are indispensable across a spectrum of industries including energy, chemical production, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. They serve both commercial and residential needs with unmatched reliability. Embracing the future, we proudly lead with revolutionary solutions that are transforming the landscape.
Guided by a relentless drive for technological advancement and 'smart manufacturing,' we ardently cultivate a culture of excellence by integrating elite technical talent. This strategic approach enhances our core strengths, ensuring we consistently deliver exceptional service value to our clients. Our remarkable growth narrative embodies our ethos: evolving from inception to industry leadership through unwavering commitment. Our business strategy is deeply anchored in innovation, unwavering in its commitment to quality as the bedrock of our survival, with market reputation as the avenue to growth, and management efficiency as the engine of profitability. We are committed to upholding 'technology as the compass, standardized management, superior quality, and customer satisfaction' as the cornerstones of our quality and talent management initiatives. Our strategic vision aims to amplify our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations of reaching new pinnacles. Integrity, unparalleled quality, exceptional service, and customer satisfaction form the core of our values. We relentlessly pursue excellence, continually innovating to forge a brand synonymous with trust. The appreciation from our customers inspires our ambition, and we extend our heartfelt gratitude to our loyal clientele, both new and long-standing. We 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.