Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series fully sealed oil immersed power transformer, a remarkable innovation by Chaotai Power. This transformer showcases unparalleled low loss, minimal noise, and exceptional efficiency, making it a beacon of energy conservation and eco-friendliness. Unlike conventional oil immersed transformers, this design eliminates the need for an oil conservator. The innovative corrugated oil tank automatically adjusts and compensates for oil volume changes through the elasticity of its corrugated sheets. This design isolates the transformer from the air, significantly reducing oil degradation and insulation aging, thus bolstering operational reliability while negating the need for maintenance under normal conditions.
1. Power Capacity: Experience versatile energy solutions with power capacities ranging from 25 to 2500 KVA, suitable for 24KV, 30KV, 33KV, 35KV, 36KV, and other customized requirements. 2. Voltage Level: Diverse voltage levels available: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation to suit your energy management needs.
4. Tapping Range: Enjoy precise voltage control with a tapping range of ±5%, 2x2.5%, ±4x2.5%.
5. Frequency: Compatible with both 50Hz and 60Hz systems, providing flexibility in power supply.
6. Phases: Configurable for both three-phase or single-phase setups, ensuring adaptability to various applications.
7. Connection Symbol: Available in Dyn11, Yyn0 configurations, or tailored as per your request.
8. Short-circuit Impedance: Designed with standard impedance to ensure optimal performance.
9. Altitude and Temperature Tolerance: Engineered to function at altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C. Adjustments can be made for environments that deviate from these conditions.
Expert adjustments ensure compliance with standards when special conditions demand.
Power Capacity: Extensive range from 25 to 2500 KVA.
Voltage Level Array: Diverse options including 10KV to 36KV to cater to varied needs.
Voltage Level:
Voltage Regulation Type: Select from Off-circuit or On-load configurations.
Tapping Range: Tailorable to ±5% or ±2x2.5% or ±4x2.5%.
Frequency Range: Options available in 50Hz or 60Hz.
Phase Configuration: Available in both three-phase or single-phase.
Connection Configuration: Dyn11 and Yyn0 options, or customized upon request.
Short-circuit Impedance: Built to standard specifications for reliable performance.
Environmental Conditions: Operational below 1000m altitude and 40°C ambient temperature.
Custom adaptations ensure that standards are upheld even in challenging conditions.
The fully sealed oil immersed power transformer by Chaotai Power features impressive advantages such as low loss, minimal noise, and superior efficiency, delivering substantial energy savings and environmental benefits.
In comparison to standard oil immersed transformers, this fully sealed design eliminates the oil conservator, with oil volume adjustments made effortlessly by the corrugated oil tank's elasticity. By isolating the transformer from air exposure, it significantly decelerates oil and insulation aging, thus boosting reliability and eliminating maintenance under regular operations.
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

Welcome to Zhejiang ChaoTai Complete Equipment Co., Ltd., a beacon of innovation and technology in the realm of electrical integration. With a specialized team dedicated to research, development, production, and service, we bring over 15 years of unmatched industry expertise to the forefront of our operations.
Our extensive product line includes cutting-edge high-voltage solid-state soft starters, state-of-the-art capacitor cabinets, versatile high and low voltage switchgear, robust gas-insulated switchgear, and comprehensive substations. Trusted across a multitude of sectors, our products empower the energy and chemical industries, bolster metal smelting processes, enhance electric power grids, and drive industrial manufacturing. We are proud to serve educational institutions, support the medical and pharmaceutical sectors, and contribute to municipal commerce. Our solutions extend to water conservancy, hydropower, road traffic systems, and enrich commercial and residential spaces.
At the core of our operations is a steadfast commitment to technological innovation and the philosophy of 'smart manufacturing.' We actively recruit top-tier technical talent to boost our competitive edge, aiming to deliver unparalleled service and establish a leading brand in the industry. Since our inception, our journey has been one of relentless progress—transforming ambitious ideas into tangible excellence. Our guiding principles are innovation and a modern business strategy focused on quality, market adaptability, reputation, and efficient management. We steadfastly uphold 'technology as the guide, standardized management, superior quality, and customer satisfaction' as our pillars in quality and talent management, enhancing market competitiveness. Our unwavering mission is to advance China's electric power and grid sectors with speed, strength, and precision. Integrity remains our foundation, with a commitment to supreme quality, superior service, and unparalleled customer satisfaction as our eternal ethos. We pursue excellence and continuous innovation to forge a reputable brand that earns your trust. Your recognition fuels our ambitions. We extend heartfelt gratitude to our loyal customers, both old and new, for their unwavering support. Together let's forge a brighter future alongside Senhang Technology.
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.