Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, expertly crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This masterpiece redefines industry standards with its exceptional low energy loss, ultra-quiet operation, and unparalleled efficiency. A true champion of energy conservation, it significantly cuts down on pollution and reduces environmental impact. Departing from traditional designs, this state-of-the-art transformer eliminates the need for an oil conservator. Thanks to the innovative elasticity of the corrugated oil tank, it effortlessly adjusts to oil volume changes, maintaining an airtight seal that shields the transformer from atmospheric exposure. This ingenious feature not only prevents oil degradation but also extends the insulation's lifespan and enhances operational reliability—requiring no routine maintenance under normal conditions.
1. Power Capacity: From 25KVA to 2500KVA, with available options for 24KV, 30KV, 33KV, 35KV, 36KV, and further customizations to cater to unique client specifications. 2. Voltage Level: Available in diverse options like 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, to perfectly match your requirements. 3. Type of Voltage Regulation: Offers the flexibility of both Off-circuit and On-load regulation options to suit specific needs.
4. Tapping Range: Choose from a variety of adjustments including ±5%, 2x2.5%, and ±4x2.5% to achieve optimal performance.
5. Frequency: Select from standard options of 50Hz or 60Hz to best fit your operational needs.
6. Phases: Available in robust Three-phase or versatile single-phase configurations to meet diverse application demands.
7. Connection Symbol: Options include Dyn11, Yyn0, with further customization available to perfectly align with your technical specifications.
8. Short-circuit Impedance: Equipped with Standard Impedance for reliable and consistent performance.
9. Operational Conditions: Specifically engineered for altitudes up to 1000m, and ambient temperatures below 40°C. Should these parameters be exceeded, we will implement necessary adjustments in strict accordance with industry protocols.
All adjustments will be meticulously aligned with industry standards to ensure optimal performance and reliability.
Power Capacity: Ranges from 25KVA to 2500KVA, offering versatility for various applications.
Voltage Levels: Choose from a comprehensive range including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, tailored to your specific needs.
Voltage Level Overview:
Type of Voltage Regulation: Available options include both Off-circuit and On-load regulation, providing flexibility and efficiency.
Tapping Range: Comes with multiple options such as ±5%, ±2x2.5%, and ±4x2.5% to ensure customizable performance.
Frequency Options: Choose between 50Hz or 60Hz to seamlessly integrate with your system requirements.
Phases: Available in either Three-phase or single-phase configurations, catering to a broad spectrum of operational needs.
Connection Symbol: Configurations include Dyn11, Yyn0, with custom options available to meet precise specifications.
Short-circuit Impedance: Comes equipped with Standard Impedance, ensuring stable and dependable operation.
Operational Conditions: Designed for altitudes not exceeding 1000m, with ambient temperatures not surpassing 40°C, ensuring optimal performance. Necessary adjustments will be made if conditions deviate, following standard guidelines meticulously.
Should conditions deviate from the norm, we will implement necessary parameter adjustments, strictly adhering to established standard guidelines to maintain superior performance.
The fully sealed oil-immersed power transformer, a technological marvel by Chaotai Power, stands out with its remarkably low energy loss, ultra-quiet operation, and superior efficiency. It is an outstanding energy-saving solution that significantly curtails pollution.
In contrast to conventional oil-immersed transformers, this fully sealed design eliminates the requirement for an oil conservator. It efficiently manages oil volume variations through the elastic prowess of the corrugated oil tank sheet, ensuring the transformer remains isolated from air exposure. This pivotal feature not only prevents oil degradation and delays insulation aging but also greatly enhances reliability, obviating the need 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. is a beacon of cutting-edge technological prowess in the ever-evolving realm of electrical integration. As a leading high-tech enterprise, we are immensely proud of our exceptional R&D, production, and service teams, fortified by over 15 years of rich industry experience. Our steadfast dedication to achieving unprecedented excellence sets us apart as an innovator at the forefront of progress.
Our extensive and diverse product portfolio is a testament to state-of-the-art engineering, featuring revolutionary innovations such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These remarkable products have become indispensable across a multitude of industries, including energy, chemicals, metals, power grids, manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. They serve both commercial and residential needs with unmatched reliability. We are immensely proud to drive the future forward with our pioneering solutions.
Rooted in an ethos of relentless advancement and 'smart manufacturing,' we are deeply committed to fostering a culture of excellence, driven by the integration of top-tier technical talent. This strategic focus amplifies our core strengths, ensuring the delivery of unparalleled service value to our clients. Our extraordinary growth journey reflects our guiding philosophy: evolving from origin to industry leadership through unwavering commitment. Our business strategy is firmly rooted in innovation, unwavering quality as the cornerstone of our survival, market reputation as the catalyst for development, and efficient management as the engine of profitability. We are dedicated to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the foundations of our quality and talent initiatives. Our strategic vision seeks to enhance our market competitiveness, serving China's electric power and grid transmission sectors with ever-reaching aspirations. Integrity, unrivaled quality, outstanding service, and customer satisfaction are the essence of our values. We relentlessly strive for greatness, continuously innovating to build a brand synonymous with trust. The appreciation of our customers fuels our ambition. We extend heartfelt gratitude to our loyal customers, both new and long-standing, warmly inviting you to join Senhang Technology on a shared journey 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.