Product Description



Oil Immersed Series Transformer:
Discover the revolutionary S11-M series fully sealed oil-immersed power transformer, meticulously engineered with cutting-edge technology by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer stands out due to its outstandingly low energy loss, ultra-quiet functionality, and unmatched efficiency. As a leader in energy conservation, it drastically reduces pollution and curtails environmental impact. Departing from the norm of traditional oil-immersed transformers, this advanced model does away with the need for an oil conservator. Through the ingenious design of the corrugated oil tank, it adapts and compensates for oil volume fluctuations, maintaining a flawlessly sealed environment that shields the transformer from air exposure. This groundbreaking feature effectively forestalls oil degradation, significantly extends the lifespan of insulation materials, and markedly enhances operational reliability—all while eliminating the requirement for routine maintenance under standard conditions.
1. Power Capacity: Extensive range from 25-2500KVA, with adaptable options like 24KV, 30KV, 33KV, 35KV, 36KV, and custom configurations designed to meet specific customer preferences. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Offers both Off-circuit and On-load options, providing versatile functionality.
4. Tapping Range: Delivers a variety of options, ±5%, 2x2.5%, or ±4x2.5%, catering to diverse power requirements.
5. Frequency: Available in both 50Hz and 60Hz, accommodating different regional standards effortlessly.
6. Phases: Available in both Three-phase and single-phase arrangements to suit various applications.
7. Connection Symbol: Select from Dyn11, Yyn0, or easily customize to your precise specifications.
8. Short-circuit Impedance: Outfitted with Standard Impedance to ensure reliable performance.
9. Operational Conditions: Expertly designed to operate efficiently at altitudes up to 1000m and under ambient temperatures below 40°C. If conditions vary, adjustments to parameters will be made according to standard protocols.
All modifications adhere strictly to industry standards, guaranteeing optimal performance.
Power Capacity: Spanning from 25-2500KVA, these transformers meet a wide array of energy needs.
Voltage Levels: Offered in 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, allowing for remarkable adaptability.
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load variants, allowing for adaptable control.
Tapping Range: Offers options like ±5%, ±2x2.5%, ±4x2.5% to meet specific requirements.
Frequency Options: Choose from 50Hz or 60Hz to comply with local standards.
Phases: Available in both Three-phase and single-phase configurations for versatile applications.
Connection Symbol: Standard choices include Dyn11, Yyn0, with options for full customization.
Short-circuit Impedance: Features Standard Impedance for dependable operation.
Operational Conditions: Designed to function optimally at altitudes not exceeding 1000m and temperatures under 40°C.
If operational conditions deviate, necessary adjustments will be executed in line with standard guidelines.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative brilliance, excels with exceptionally low energy loss, quiet operations, and superior efficiency. It is a powerful energy-saving solution that significantly 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. emerges as a beacon of technological mastery and excellence in the ever-evolving realm of electrical integration. As a distinguished high-tech enterprise, we stand fortified with an elite team specializing in research, development, production, and service, boasting over 15 years of profound industry expertise. Our unwavering pursuit of excellence and unparalleled innovation sets us apart as true pioneers in our field.
Our extensive and diverse product lineup showcases state-of-the-art innovations, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These exceptional products are vital across a vast array of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. They are designed for both commercial and residential applications. With our revolutionary solutions, we proudly empower the future.
Guided by a philosophy of relentless technological advancement and 'smart manufacturing,' we are passionately committed to fostering a culture of excellence by integrating top-tier technical talents. This strategic emphasis enhances our core capabilities, ensuring we consistently deliver unparalleled service value to our esteemed clients. Our remarkable growth trajectory stands as a testament to our ethos: transitioning from inception to industry leadership through steadfast dedication. At the heart of our business strategy lies innovation, with an unwavering commitment to quality as our survival foundation, market reputation as our growth path, and management efficiency as our profitability catalyst. We are devoted to leveraging 'technology as a guide, standardized management, superior quality, and customer satisfaction' as the cornerstones of our quality and talent management initiatives. Our strategic vision aims to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations reaching new heights. Integrity, unsurpassed quality, exceptional service, and customer satisfaction are the essence of our values. We tirelessly strive for excellence, continuously innovating to forge a brand synonymous with trust. The appreciation from our customers fuels our ambition. We express our deepest gratitude to our loyal customers, both new and longstanding, and warmly welcome you to join us on a shared journey with Senhang Technology towards a brighter tomorrow.
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.