Product Description



Oil Immersed Series Transformer:
Introducing the S11-M Series, a revolutionary fully sealed oil-immersed power transformer by Chaotai Power. This groundbreaking transformer boasts remarkable features such as low loss, minimal noise, and exceptional efficiency, offering an outstanding energy-saving performance that significantly curtails pollution. Unlike traditional oil-immersed transformers, our innovative design eliminates the need for an oil conservator. The fluctuation in oil volume is expertly managed by the corrugated oil tank's elastic corrugated sheet. Enclosed from air exposure, this transformer dramatically reduces oil degradation and insulation aging, ensuring unparalleled operational reliability and maintenance-free performance during standard operations.
1. Power Capacity: Ranging from 25 to 2500 KVA, with voltage levels of 24KV, 30KV, 33KV, 35KV, 36KV, and customizable options to suit customer-specific requirements.
4. Tapping Range: Precisely adjustable within a range of ±5% and ±2x2.5% to ±4x2.5%.
5. Frequency: Available in both 50Hz or 60Hz to match diverse electrical systems.
6. Phases: Configurable as either three-phase or single-phase, depending on the application needs.
7. Connection Symbol: Standard configurations include Dyn11, Yyn0, or customizable as per client requests.
8. Short-Circuit Impedance: Built to standard impedance specifications for optimal performance.
9. Altitude: Suitable for installations at altitudes not exceeding 1000m, with an ambient temperature cap of 40°C. Should these conditions not be met, parameter adjustments will be executed to align with standard protocols.
If these environmental conditions are unmet, we are prepared to adjust parameters in accordance with industry standards to ensure optimal performance.
Power Capacity: Offering a range of 25 to 2500 KVA to meet diverse power requirements.
Voltage Level: Adaptable to various voltage needs including 10KV, 22KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level:
Type of Voltage Regulation: Flexible options for either off-circuit or on-load adjustments.
Tapping Range: Delivers a versatile range from ±5% to ±2x2.5% and ±4x2.5% for precise control.
Frequency: Designed to operate seamlessly at both 50Hz and 60Hz frequencies.
Phases: Available in both three-phase and single-phase configurations.
Connection Symbol: Choose from Dyn11, Yyn0 configurations or customize as per your needs.
Short-Circuit Impedance: Engineered to industry-standard impedance for optimal performance.
Altitude: Suitable for locations below 1000m with ambient temperatures up to 40°C.
In cases where environmental conditions exceed specified limits, we will adjust parameters to meet industry standards for continued efficiency.
The advanced fully sealed oil-immersed power transformer developed by Chaotai Power excels in delivering low loss, low noise, and superb efficiency. It stands out with its exceptional energy conservation, reducing pollution significantly.
Unlike conventional oil-immersed transformers, our fully sealed variant eliminates the need for an oil conservator. It manages oil volume changes automatically through the corrugated oil tank's elastic sheet. This design protects against air exposure, preventing oil degradation and insulation aging, thereby enhancing reliability and negating maintenance under normal operating conditions.
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 tall as a beacon of innovation in the realm of electrical integration. With a distinguished presence as a high-tech enterprise, we pride ourselves on our elite R&D, production, and service teams, each contributing over 15 years of profound industry expertise.
Our product portfolio is a testament to our versatility and forward-thinking approach, encompassing high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and robust substations. These cutting-edge solutions are pivotal across a myriad of sectors, including the dynamic energy and chemical industries, the intricate realms of metal smelting, electric power grids, and the expansive field of industrial manufacturing. Furthermore, our innovations serve prestigious universities and research institutions, the critical medical and pharmaceutical sectors, as well as municipal commerce. They form the backbone of water conservancy and hydropower, enhance road traffic management, and meet the intricate demands of both commercial and residential zones.
At the heart of our ethos is an unwavering dedication to technological innovation, underpinned by a 'smart manufacturing' philosophy. We are resolute in attracting high-caliber technical talents, thereby bolstering our core competitive edge. This dedication ensures we deliver unparalleled services, aiming to crown ourselves as the industry's leading brand. Our journey has been one of remarkable progress—from modest beginnings to noteworthy achievements, and ultimately, excellence. We steadfastly champion innovation, embracing a contemporary business strategy that thrives on quality for survival, market-driven growth, reputation-built development, and management-driven efficiency. Our commitment is encapsulated by the guiding principles of 'technology as the guide, standardized management, superior quality, and customer satisfaction.' These tenets amplify our market competitiveness, empowering us to excel in China's power transmission and distribution sectors with heightened efficiency and ambition. Our bedrock values of integrity, unparalleled quality, supreme service, and unwavering customer satisfaction guide our mission. Pursuing excellence, fostering continuous innovation, and building an esteemed brand are the enduring aspirations that propel us forward. Every accolade and recognition fuels our passion. Our heartfelt gratitude extends to all our valued clients, both new and longstanding, for their unwavering support and trust. At Senhang Technology, we eagerly anticipate collaborating with you to forge a more prosperous 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.