Product Description



Oil immersed series transformer:
Introducing the S11-M series, a top-of-the-line fully sealed oil immersed power transformer, meticulously engineered and crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. Our transformer stands out with its exceptional low loss, minimal noise, and superior efficiency. It is designed to deliver remarkable energy-saving benefits and minimize environmental impact. Unlike conventional transformers, our fully sealed design eliminates the oil conservator, instead, the transformer’s oil volume is adeptly managed and adjusted by the robust elasticity of the corrugated sheets within the corrugated oil tank. This innovative feature ensures the transformer remains isolated from air, significantly preventing oil degradation and insulation aging. As a result, it enhances operational reliability and remarkably reduces the need for maintenance during regular operations. Choose our transformer for a reliable, sustainable energy solution.
1. Power Capacity: Our versatile range spans from 25KVA to a remarkable 2500KVA, with voltage options of 24KV, 30KV, 33KV, and up to 36KV. We also accommodate custom requirements to suit diverse applications. 2. Voltage Level: Available voltage levels include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, ensuring adaptability for various power needs. 3. Type of Voltage Regulation: Offers flexibility with both Off-circuit or On-load options, catering to your specific operational demands.
4. Tapping Range: Featuring a dynamic tapping range of ±5%, ±2x2.5%, and ±4x2.5%, our transformer excels in maintaining consistent performance across diverse conditions.
5. Frequency: Compatible with both 50Hz and 60Hz frequencies, ensuring versatility and adaptability across different regional standards.
6. Phases: Available in both Three-phase and single-phase configurations to meet varying power distribution requirements.
7. Connection Symbol: Our transformer offers flexible connection options such as Dyn11 and Yyn0, or tailor-made as per your request.
8. Short-circuit Impedance: Engineered with standard impedance, ensuring robust performance and reliability under short-circuit conditions.
9. Altitude and Temperature: Designed to operate efficiently at altitudes not exceeding 1000 meters and ambient temperatures not exceeding 40°C. If these conditions are not met, we will adjust the parameters to align with industry standards.
Rest assured, should the conditions exceed standard operating parameters, we will adeptly modulate parameters in strict adherence to established standards, guaranteeing optimal performance.
Power capacity: Our offering ranges from 25KVA to an impressive 2500KVA, ensuring a fit for various scales of energy requirements.
Voltage Options: Flexibly designed to support 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 24KV, 30KV, 33KV, 35KV, and up to 36KV, accommodating a broad spectrum of applications.
Voltage Level: Configurable to suit your specific needs with levels like 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, providing an adaptable power solution.
Voltage Regulation: Versatile regulation options with Off-circuit or On-load choices, designed to meet your particular operational needs with precision.
Tapping Range: With a comprehensive tapping range of ±5%, ±2x2.5%, ±4x2.5%, our transformer ensures reliable performance and adaptability.
Frequency: Offering compatibility with both 50Hz and 60Hz, our transformers seamlessly integrate into various regional power systems.
Phases: Available in both three-phase and single-phase options, our transformers provide flexibility to suit a wide range of applications.
Connection Symbol: Tailorable connection options including Dyn11 and Yyn0, or customized per your requirements, offering versatile connectivity solutions.
Short-circuit Impedance: Our transformers are crafted with standard impedance parameters, ensuring robust and reliable performance during short-circuit scenarios.
Environmental Conditions: Designed to function optimally in altitudes not surpassing 1000 meters, and ambient temperatures up to 40°C.
Parameter Adaptation: Should our transformers face conditions beyond these parameters, rest assured we will meticulously adjust and adhere to standard norms to maintain performance excellence.
The fully sealed oil immersed power transformer by Zhejiang Chaotai Complete Equipment Co., Ltd. features outstanding low loss, minimal noise, and high efficiency, offering significant energy-saving advantages and reducing environmental impact.
In contrast to conventional oil-immersed transformers, our fully sealed model eliminates the necessity of an oil conservator. The system ingeniously adjusts oil volume through the elasticity of the corrugated sheet within the corrugated oil tank, effectively isolating the transformer from air. This design significantly slows insulation aging and oil degradation, enhancing operational reliability while minimizing the need for maintenance during normal operation.
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. stands as a beacon of innovation and expertise in the realm of electrical integration. As a high-tech enterprise, we proudly boast a dedicated R&D, production, and service team, each member bringing over 15 years of invaluable industry experience to the table.
Our prestigious lineup of products includes high-voltage solid-state soft starters, capacitor cabinets, robust high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and highly efficient substations. A testament to their versatility, these products are currently enriching a diverse array of sectors including energy and chemical industries, metal smelting, expansive electric power grids, advanced industrial manufacturing, renowned universities and pioneering research institutions, forward-thinking medical and pharmaceutical sectors, bustling municipal commerce, pioneering water conservancy and hydropower, infrastructural road traffic, and dynamic commercial and residential areas.
At the heart of our philosophy is a steadfast commitment to technological innovation and smart manufacturing. By actively recruiting high-level technical talents, we aim to elevate our core competitiveness, ensuring that our services remain invaluable to our customers while striving to establish the leading brand in the industry. Since our inception, we've transformed from nascent beginnings to achieving unparalleled excellence. Our unwavering focus on innovation is complemented by a modern business ethos that seeks survival through quality, thrives on market orientation, and achieves growth via reputation and efficiency through astute management. Driven by our guiding principles of technology leadership, standardized management, exemplary quality, and ensuring customer satisfaction, we are determined to bolster our market competitiveness. Our relentless pursuit is to excel in serving China's electric power and grid sectors with ambitious goals of speed, strength, and elevation. Integrity is our foundation; quality is our mission; service is our commitment; customer satisfaction is our eternal promise. We are dedicated to pursuing excellence, fostering continual innovation, and building a brand that earns trust. Your recognition fuels our passion. We extend heartfelt gratitude to all our esteemed customers, both new and long-standing, for their unwavering support and affection. Senhang Technology eagerly anticipates forging a prosperous future together, hand in hand.
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.