Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil immersed power transformer, masterfully crafted by Chaotai Power, stands out with its remarkable attributes of minimal loss, whisper-quiet operation, and extraordinary efficiency. This engineering marvel not only ensures impressive energy savings but also significantly reduces environmental impact. Distinguished from traditional oil-immersed transformers, this innovative design eliminates the oil conservator. The oil volume changes are effortlessly managed and compensated by the resilient corrugated sheet of the oil tank, ensuring flawless operation. With its superior air isolation, the transformer substantially prolongs oil life and insulation integrity, guaranteeing superior reliability and maintenance-free operation under normal conditions.
1. Power Capacity: 25-2500KVA, 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to meet specific customer needs. 2. Voltage Level: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Available in Off-circuit or On-load versions.
4. Tapping Range: Versatile range of ±5%, ±2x2.5%, ±4x2.5% to accommodate various applications.
5. Frequency: Configurable for both 50Hz or 60Hz to suit global standards.
6. Phases: Available in both three-phase or single-phase configurations.
7. Connection Symbol: Options include Dyn11, Yyn0, or customized upon request.
8. Short-Circuit Impedance: Designed with standard impedance for dependable performance.
9. Altitude: Suitable for altitudes not exceeding 1000m and ambient temperatures not surpassing 40°C. Should these conditions deviate, parameter adjustments will be made to adhere to standard guidelines.
We ensure adaptability by modulating parameters to align with international standards, ensuring seamless integration.
Power Capacity: Ranging from 25-2500KVA to meet diverse power supply needs.
10kV, 11kV, 13.8kV, 15kV, 17.5kV, 20kV, 22kV, 24KV, 30KV, 33KV, 35KV, 36KV - all available.
Voltage Level: Tailor-made options for specific voltage requirements.
Type of Voltage Regulation: Choose between Off-circuit or On-load to match your operational needs.
Tapping Range: Broad capacity of ±5%, ±2x2.5%, ±4x2.5% for flexible operation.
Frequency: Configurable to either 50Hz or 60Hz, ensuring global compatibility.
Phases: Available in three-phase or single-phase to suit your specific application.
Connection Symbol: Standard options include Dyn11, Yyn0, with customization available on request.
Short-Circuit Impedance: Engineered with standard impedance to assure consistent performance.
Altitude and Temperature: Optimal for altitudes up to 1000m and temperatures up to 40°C, with adjustments available for other conditions.
Should environmental conditions vary, we expertly adjust parameters to maintain superior standards.
Our fully sealed oil immersed power transformer from Chaotai Power epitomizes excellence with its minimal loss, quiet operation, and unparalleled efficiency, delivering exceptional energy savings and reduced pollution.
In contrast to conventional designs, our fully sealed transformers eliminate the need for an oil conservator, dynamically adjusting the oil volume via an innovative corrugated tank system. This air-isolation approach effectively mitigates oil degradation and insulation aging, ensuring heightened reliability and maintenance-free operation over its lifecycle.
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 pioneering high-tech enterprise with a steadfast focus on electrical integration. Boasting a dynamic team of experts in R&D, production, and service, we leverage over 15 years of extensive industry experience to lead the way in innovation and excellence.
Our exceptional product line features high-voltage solid-state soft starters, state-of-the-art capacitor cabinets, versatile high and low voltage switchgear, advanced gas-insulated switchgear, and robust substations. These premium products are trusted and widely implemented across a diverse array of industries, including energy and chemical sectors, metal smelting, power grids, industrial manufacturing, educational institutions, healthcare, municipal commerce, water conservation, hydropower, road traffic management, and commercial as well as residential development.
Embracing the spirit of technological advancement and the philosophy of "smart manufacturing," we actively recruit top-tier technical talent to significantly bolster our company's core competitive edge. Our mission is to deliver unparalleled value to our customers while aspiring to establish an industry-leading brand. Since our inception, we have charted an outstanding journey from inception to excellence, marked by relentless innovation. We champion a modern business approach that prioritizes quality as the foundation of survival, leverages market orientation for growth, builds reputation for development, and enhances efficiency through superior management practices. Our commitment to "technology as the guide, standardized management, excellent quality, and customer satisfaction" serves as the cornerstone of our quality and technical talent management strategy, augmenting our market competitiveness. We are dedicated to serving China's power transmission and distribution fields with ambitions set on achieving faster, stronger, and loftier goals. Integrity is our bedrock, quality our creed, service our hallmark, and customer satisfaction our perpetual pledge. Our relentless pursuit of excellence, continuous innovation, and steadfast commitment to building a trustworthy brand remain our unwavering development objectives. Your trust is our greatest motivator. We express our heartfelt gratitude to both new and long-standing customers for their unwavering support and partnership. Senhang Technology eagerly anticipates collaborating with you to forge a brighter future together.
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.