Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil-immersed power transformer, meticulously engineered by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer sets new standards with its ultra-low energy loss, silent operation, and unmatched efficiency. It is a paragon of eco-friendliness, drastically reducing pollution and minimizing its environmental impact. Unlike conventional oil-immersed transformers, this cutting-edge model eliminates the requirement for an oil conservator. The ingeniously crafted corrugated oil tank design allows for self-regulation and compensation of oil volume fluctuations, ensuring a perfectly sealed environment that shields the transformer from air exposure. This trailblazing feature effectively prevents oil deterioration, significantly prolongs the lifespan of insulation materials, and substantially enhances operational reliability—all while necessitating no routine maintenance under standard conditions.
1. Power Capacity: Covering a range from 25-2500KVA, with flexible options like 24KV, 30KV, 33KV, 35KV, and 36KV, alongside customizable configurations to meet specific customer needs. 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 for adaptable performance.
4. Tapping Range: Offers a variety of options including ±5%, 2x2.5%, or ±4x2.5% to accommodate diverse power requirements.
5. Frequency: Available in both 50Hz and 60Hz, catering to regional preferences and standards.
6. Phases: Offered in both Three-phase and single-phase configurations to suit diverse applications.
7. Connection Symbol: Options include Dyn11, Yyn0, or customize to your precise specifications with ease.
8. Short-circuit Impedance: Equipped with Standard Impedance for dependable and consistent performance.
9. Operational Conditions: Engineered for optimal performance at altitudes up to 1000m and ambient temperatures under 40°C. In the event that these conditions vary, parameter adjustments will be made as per standard protocols.
All modifications will strictly adhere to industry standards, ensuring peak performance and reliability.
Power Capacity: Spans from 25-2500KVA to meet a wide range of energy demands.
Voltage Levels: Available in 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, offering extensive flexibility.
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load variants for flexible control options.
Tapping Range: Offers options such as ±5%, ±2x2.5%, ±4x2.5% to cater to specific operational requirements.
Frequency Options: Select between 50Hz or 60Hz to align with local standards.
Phases: Available in both Three-phase and single-phase configurations for versatile application.
Connection Symbol: Standard options include Dyn11, Yyn0, with fully customizable configurations available to suit your needs.
Short-circuit Impedance: Features Standard Impedance for reliable and dependable operation.
Operational Conditions: Designed for optimal functionality at altitudes not exceeding 1000m and temperatures below 40°C.
If operational conditions deviate, appropriate parameter adjustments will be executed following standard guidelines.
The fully sealed oil-immersed power transformer, an embodiment of Chaotai Power's innovative leadership, excels with remarkably low energy loss, silent 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 luminary of technological prowess in the dynamic sphere of electrical integration. Celebrated as a premier high-tech enterprise, we thrive on the brilliance of an elite team adept in research, development, production, and service, fortified by an impressive 15-plus years of industry expertise. Our unwavering commitment to excellence distinguishes us as vanguards of innovation, setting new benchmarks in the industry.
Our extensive array of groundbreaking products includes pioneering high-voltage solid-state soft starters, sophisticated capacitor cabinets, versatile high and low voltage switchgear, advanced gas-insulated switchgear, and robust substations. These superior products are pivotal across a plethora of industries such as energy, chemical processing, metal smelting, electric power distribution, industrial manufacturing, academic research, healthcare, municipal commerce, water management, hydropower, and road traffic. They expand their effectiveness into both commercial and residential domains. With our trailblazing solutions, we proudly shape the future and empower diverse sectors.
Propelled by a relentless drive for technological advancement and 'smart manufacturing,' we are passionately committed to nurturing a culture of excellence by integrating exemplary technical talent. This strategic emphasis amplifies our core strengths, ensuring we consistently offer unmatched service value to our clients. Our remarkable growth journey reflects our ethos: evolving from inception to industry prominence through unwavering dedication. Our business strategy is deeply rooted in innovation, with an unwavering commitment to quality as the bedrock of our endurance, market reputation as our ladder to growth, and management efficiency as the engine of profitability. We passionately embrace '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 enhance our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that reach unprecedented heights. Integrity, unmatched quality, exceptional service, and customer satisfaction are the core of our values. We relentlessly strive for excellence, continuously innovating to build a brand synonymous with trust. The admiration from our customers fuels our ambition. We extend our heartfelt gratitude to our loyal customers, both new and long-standing, and warmly invite you to join us in a shared journey with Senhang Technology towards a radiant 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.