Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a marvel of modern engineering from Zhejiang Chaotai Complete Equipment Co., Ltd. This fully sealed oil-immersed power transformer exemplifies excellence with its outstanding features of minimal energy loss, whisper-quiet operation, and exceptional efficiency. It stands as a leading energy-saving solution, dramatically reducing pollution and its environmental footprint. This cutting-edge model innovatively foregoes the need for an oil conservator, distinguishing itself from traditional transformers. With an intelligent design, it autonomously adjusts oil volume changes using the elasticity of its corrugated oil tank, keeping the transformer impeccably sealed from air exposure. This state-of-the-art feature not only prevents oil degradation and slows down insulation aging but also significantly enhances operational reliability, eliminating the need for maintenance under normal operating conditions.
1. Power Capacity: Ranges from 25-2500KVA, with options for 24KV, 30KV, 33KV, 35KV, 36KV, and the ability to customize according to specific customer requirements. 2. Voltage Level: Offers flexibility with 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV options. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation types.
4. Tapping Range: Options include ±5%, 2x2.5%, ±4x2.5% for tailored power management.
5. Frequency: Available in standard 50Hz or 60Hz to match regional requirements.
6. Phases: Configurations available for both three-phase and single-phase systems.
7. Connection Symbol: Standard symbols include Dyn11, Yyn0, with customization available to suit specific needs.
8. Short-circuit Impedance: Engineered with standard impedance for optimal performance.
9. Operational Conditions: Designed to function at altitudes up to 1000m and ambient temperatures below 40°C. Adjustments are made per standard protocols if conditions differ.
All parameter adjustments will strictly follow established industry standards for safety and performance.
Power Capacity: Flexible range from 25-2500KVA to suit diverse energy needs.
Voltage Levels: Offering a wide range, including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, ensuring adaptability for various applications.
Voltage Level Overview:
Type of Voltage Regulation: Options include both Off-circuit and On-load for precise control.
Tapping Range: Versatile options such as ±5%, ±2x2.5%, ±4x2.5% to meet specific power requirements.
Frequency Options: Available in both 50Hz and 60Hz for global compatibility.
Phases: Adaptable for either three-phase or single-phase applications.
Connection Symbol: Standard configurations such as Dyn11 and Yyn0, with custom options available upon request.
Short-circuit Impedance: Designed with standard impedance to maintain reliable operation.
Operational Conditions: Engineered to perform at altitudes not exceeding 1000m with ambient temperatures below 40°C.
Should operational conditions vary, rest assured we will implement all necessary adjustments in accordance with established guidelines to ensure optimal functionality.
The fully sealed oil-immersed power transformer by Chaotai Power epitomizes cutting-edge technology with its low energy loss, silent functioning, and high efficiency. This outstanding transformer serves as a powerful energy-saving solution, greatly reducing environmental pollution.
Unlike conventional oil-immersed transformers, this advanced fully sealed design eliminates the necessity for an oil conservator. It proficiently manages oil volume variations thanks to the resilient corrugated oil tank sheet, ensuring the transformer remains perfectly air-isolated. This critical feature not only safeguards against oil degradation and slows insulation aging but also enhances reliability and eliminates the need for routine 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 shining exemplar of technological excellence within the realm of electrical integration. As a highly respected high-tech enterprise, we are fortified by a team of dedicated professionals in R&D, production, and service, each bringing over 15 years of invaluable industry expertise. Our unwavering quest for excellence positions us at the forefront of innovation, marking us as leaders in this dynamic field.
Our expansive product lineup showcases pioneering advancements such as high-voltage solid-state soft starters, capacitor cabinets, sophisticated high and low voltage switchgear, gas-insulated switchgear, and state-of-the-art substations. These essential products seamlessly integrate into diverse sectors like energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic, effortlessly extending their utility to both commercial and residential spheres. We take pride in energizing the future with our groundbreaking solutions, ensuring a brighter, smarter, and more efficient tomorrow.
Guided by a philosophy of relentless technological innovation and 'smart manufacturing,' we are devoted to nurturing a culture of excellence through the integration of top-tier technical talents. This strategic emphasis enhances our core capabilities, ensuring we deliver unmatched service value to our clients. Our growth journey is a living testament to our ethos: evolving from inception to industry leadership through steadfast commitment. Our business strategy is deeply rooted in innovation, with an unwavering dedication to quality as the foundation of survival, market reputation as a catalyst for development, and management efficiency as the cornerstone of profitability. We pledge to use 'technology as the 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 that aim higher, execute faster, and perform stronger. Integrity, unmatched quality, exceptional service, and customer satisfaction are the core values driving us forward. We are passionately committed to excellence, continually innovating to craft a brand synonymous with trust. The recognition we receive from our customers propels our ambition. With deep gratitude, we thank our devoted customers, both new and longtime, and extend a warm invitation to join Senhang Technology on a collaborative 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.