Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, a marvel of precision engineering and forward-thinking innovation by Zhejiang Chaotai Complete Equipment Co., Ltd. This extraordinary transformer is engineered to deliver exceptionally low energy loss, ultra-quiet operation, and outstanding efficiency. It stands as a leader in energy conservation, drastically reducing pollution and environmental impact. Unlike conventional oil-immersed transformers, this state-of-the-art model eliminates the need for an oil conservator. With its ingeniously designed corrugated oil tank, it self-regulates and compensates for oil volume changes, maintaining a perfectly sealed environment that shields the transformer from air exposure. This pioneering feature effectively prevents oil degradation, dramatically extends the lifespan of insulation materials, and significantly enhances operational reliability—requiring no routine maintenance under optimal conditions.
1. Power Capacity: Offers a versatile range from 25-2500KVA, with adaptable options such as 24KV, 30KV, 33KV, 35KV, 36KV, and fully customizable configurations tailored to meet specific customer needs. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, ensuring comprehensive adaptability. 3. Type of Voltage Regulation: Provides both Off-circuit and On-load options for enhanced functional flexibility.
4. Tapping Range: Offers flexibility with choices of ±5%, 2x2.5%, or ±4x2.5% to cater to diverse power requirements.
5. Frequency: Supports both 50Hz and 60Hz, accommodating various regional standards.
6. Phases: Available in both Three-phase and single-phase configurations, ensuring compatibility with a wide range of applications.
7. Connection Symbol: Choose from Dyn11, Yyn0, or customize to your exact specifications with simplicity.
8. Short-circuit Impedance: Comes with Standard Impedance for consistent and reliable performance.
9. Operational Conditions: Expertly designed to perform at altitudes up to 1000m and ambient temperatures below 40°C. Should these conditions change, we will adjust parameters as required by standard protocols.
All modifications are meticulously aligned with industry standards, ensuring peak performance.
Power Capacity: Spans a robust range from 25-2500KVA to meet various energy demands.
Voltage Levels: A wide array including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, enabling extensive adaptability.
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load variants, providing versatile control options.
Tapping Range: Offers varied options like ±5%, ±2x2.5%, ±4x2.5% to precisely match specific requirements.
Frequency Options: Select from 50Hz or 60Hz to comply with local standards.
Phases: Offered in both Three-phase and single-phase for broad application suitability.
Connection Symbol: Standard selections include Dyn11, Yyn0, with fully customizable configurations for your specific needs.
Short-circuit Impedance: Features Standard Impedance ensuring dependable operation.
Operational Conditions: Designed for optimal performance at altitudes not exceeding 1000m and temperatures below 40°C.
Should deviation in operational conditions occur, appropriate parameter adjustments will be made strictly adhering to standard guidelines.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative brilliance, excels with its extremely low energy loss, silent operations, and outstanding efficiency. It is a powerful energy-saving solution that greatly reduces pollution.
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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

Zhejiang ChaoTai Complete Equipment Co., Ltd. exemplifies technological prowess in the dynamic realm of electrical integration. As a distinguished high-tech enterprise, we boast a premier team skilled in research, development, production, and service, fortified by over 15 years of industry expertise. Our unwavering commitment to exceptional excellence distinguishes us as trailblazers of innovation and ingenuity.
Our extensive, diverse product array showcases state-of-the-art innovations such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These remarkable products are critical across numerous sectors like energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. They extend their versatile usability to both commercial and residential realms. We proudly lead the charge into the future with our groundbreaking solutions.
Propelled by a philosophy of relentless technological advancement and 'smart manufacturing,' we are ardently committed to nurturing a culture of excellence by integrating world-class technical experts. This strategic emphasis enhances our core strengths, ensuring the consistent delivery of unmatched service value to our clients. Our extraordinary growth journey embodies our ethos: rising from inception to industry leadership through unwavering dedication. Our business strategy is deeply rooted in innovation, with an unwavering commitment to quality as the bedrock of our survival, market reputation as the path to growth, and management efficiency as the driving force for 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 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 unprecedented heights. Integrity, unrivaled quality, exceptional service, and customer satisfaction are the essence of our values. We tirelessly pursue excellence, continuously innovating to build a brand synonymous with trust. The appreciation from our customers fuels our ambition, and we express our heartfelt gratitude to our loyal customers, both new and long-standing, inviting you to join us in 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.