Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series fully sealed oil-immersed power transformer, a masterpiece crafted with precision by Zhejiang Chaotai Complete Equipment Co., Ltd. This extraordinary transformer excels in delivering unparalleled attributes such as exceptionally low energy loss, whisper-quiet operation, and peak efficiency. It serves as the quintessential energy-saving solution, dramatically minimizing pollution and environmental impact. Distinguishing itself from traditional oil-immersed transformers, this state-of-the-art model does away with the oil conservator. Its intelligent design adeptly modulates and accommodates oil volume changes through the inherent elasticity of the corrugated oil tank, effectively shielding the transformer from air exposure. This groundbreaking feature prevents oil degradation, decelerates insulation aging, and significantly elevates operational reliability, all while requiring no maintenance during standard operations.
1. Power Capacity: Ranging from 25-2500KVA, compatible with 24KV, 30KV, 33KV, 35KV, 36KV, and fully customizable to meet specific customer needs 2. Voltage Level: Suitable for 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Available in Off-circuit or On-load options
4. Tapping Range: Configurable at ±5%, 2x2.5%, ±4x2.5%
5. Frequency: Available in 50Hz or 60Hz
6. Phases: Offered in Three-phase or single-phase
7. Connection Symbol: Dyn11, Yyn0 (or customizable according to your needs)
8. Short-circuit Impedance: Standard Impedance
9. Operational Conditions: Designed for altitudes not exceeding 1000m and ambient temperatures below 40°C. Adjustments will be made as per standard protocols if these conditions are not met.
All necessary adjustments will strictly adhere to rigorous industry standards.
Power Capacity: 25-2500KVA
Voltage Levels: Offers compatibility with 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Available as Off-circuit or On-load
Tapping Range: Available at ±5%, ±2x2.5%, ±4x2.5%
Frequency Options: Choose between 50Hz or 60Hz
Phases: Available in Three-phase or single-phase configurations
Connection Symbol: Available as Dyn11, Yyn0 (customizable upon request)
Short-circuit Impedance: Maintains Standard Impedance
Operational Conditions: Optimal performance at altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C
Should conditions deviate, we are committed to making necessary parameter adjustments in strict adherence to standard guidelines.
The fully sealed oil-immersed power transformer, a pinnacle of innovation from Chaotai Power, is acclaimed for its low energy loss, quiet operation, and exceptional efficiency. It presents an outstanding energy-saving solution that significantly reduces pollution.
Unlike conventional oil-immersed transformers, this fully sealed design eliminates the oil conservator. It skillfully manages oil volume fluctuations using the elasticity of the corrugated oil tank sheet, ensuring the transformer remains isolated from air. This crucial feature not only prevents oil degradation and insulation aging but also enhances reliability and eliminates 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. shines as a paragon of technological mastery in the vast landscape of electrical integration. Recognized as an eminent high-tech enterprise, we are equipped with a dedicated R&D, production, and service team that is reinforced by an impressive legacy of over 15 years of profound industry experience. Our ceaseless quest for excellence positions us at the forefront of innovation, driving us to continually elevate standards in technological advancements.
Our extensive and diverse product lineup encompasses state-of-the-art innovations including high-voltage solid-state soft starters, sophisticated capacitor cabinets, advanced high and low voltage switchgear, cutting-edge gas-insulated switchgear, and robust substations. These indispensable products seamlessly integrate into a myriad of sectors, such as energy, chemical industries, metal smelting, electric power grids, and industrial manufacturing. Additionally, they play a crucial role in academia, healthcare, municipal commerce, water management, hydropower, and road traffic, extending their influence to both commercial and residential settings. We take pride in empowering the future with solutions that transform and elevate industries globally.
Rooted in a philosophy of relentless technological innovation and pioneering 'smart manufacturing,' we are devoted to fostering an environment of excellence by integrating top-tier technical talents. This strategic initiative strengthens our core competencies, ensuring we deliver unparalleled service value to our esteemed clients. Our growth journey is a powerful testament to our ethos of evolving from inception to industry leadership through unwavering commitment. Anchored in innovation, our business strategy upholds quality as the cornerstone of our survival, market reputation as the avenue to development, and management efficiency as the catalyst for profitability. We are committed to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the foundational pillars of our quality and talent management initiatives. Our strategic vision focuses on enhancing our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations to be faster, stronger, and higher. Integrity, unmatched quality, exceptional service, and customer satisfaction form the bedrock of our core values. We relentless pursue excellence and consistently innovate to establish a brand synonymous with trust. The recognition from our customers fuels our ambition, and we extend heartfelt gratitude to our loyal customers, both new and longstanding. We warmly invite you to join Senhang Technology on a shared journey towards a brighter and more prosperous 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.