Product Description



Oil Immersed Series Transformer:
Introducing the S11-M Series Fully Sealed Oil Immersed Power Transformer, masterfully engineered by Chaotai Power to deliver exceptional benefits such as low loss, reduced noise, and impressive efficiency. This cutting-edge transformer is designed to be energy-efficient, significantly minimizing energy waste and lowering pollution. Distinguishing itself from traditional oil-immersed transformers, it features a unique fully-sealed design that eliminates the need for an oil conservator. The innovative corrugated oil tank allows the change in oil volume to be automatically regulated and compensated via the tank's elastic corrugated sheet. Completely isolated from external air, this transformer effectively prevents oil deterioration and insulation aging, boosting operational reliability while eliminating the necessity for routine maintenance during normal operations.
1. Power Capacity: A versatile range of 25-2500KVA, 24KV, 30KV, 33KV, 35KV, 36KV, and customizable options tailored to customer requirements. 2. Voltage Level: Offers precision with options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Available in both Off-circuit and On-load configurations, catering to diverse operational needs.
4. Tapping Range: Flexible tapping range of ±5%, 2x2.5%, up to ±4x2.5% to ensure adaptability and precision.
5. Frequency: Designed to accommodate both 50Hz and 60Hz frequency settings, ensuring global compatibility.
6. Phases: Available in Three-phase or Single-phase options to meet specific operational demands.
7. Connection Symbol: Configurable with Dyn11, Yyn0, or as per customer request, ensuring seamless integration into existing systems.
8. Short-circuit Impedance: Built to meet the Standard Impedance, ensuring stability and consistent performance.
9. Altitude and Temperature Constraints: Designed for altitudes not exceeding 1000 meters and ambient temperatures not surpassing 40°C.
If these conditions cannot be met, we will adjust parameters to align with standard regulations.
Power Capacity: Wide-ranging from 25-2500KVA to suit diverse power needs.
Voltage Options: Spanning from 10KV through to 36KV including variants like 10KV, 11KV, 13.8KV, 15KV, etc.
Voltage Level:
Type of Voltage Regulation: Choose between Off-circuit or On-load for tailored voltage management.
Tapping Range: Customizable tapping range of ±5%, ±2x2.5%, ±4x2.5% ensuring precision in voltage control.
Frequency Options: Compatible with both 50Hz and 60Hz for international applicability.
Phases: Versatile configuration available in both Three and Single-phase.
Connection Symbol: Options include Dyn11, Yyn0, or customizable to specific requirements.
Short-circuit Impedance: Adheres to Standard Impedance for optimal performance.
Design Limitations: Altitudes not exceeding 1000 meters and ambient temperatures not exceeding 40°C.
In cases where these conditions are unmet, parameter adjustments will be made to comply with standard practices.
Designed and manufactured by Chaotai Power, our Fully Sealed Oil Immersed Power Transformer is engineered for excellence with benefits including low loss, minimal noise, and high efficiency. This advanced design promotes energy savings and reduces environmental impact.
Our fully sealed transformer, as opposed to conventional oil-immersed types, eliminates the oil conservator. It uses a corrugated sheet system for automatic oil volume adjustment, keeping the transformer isolated from air to prevent oil degradation and insulation aging. This innovation ensures enhanced operational reliability and the elimination of regular maintenance during standard 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

Zhejiang Chaotai Complete Equipment Co., Ltd. is an esteemed high-tech enterprise specializing in the dynamic realm of electrical integration. With an elite team dedicated to research, development, production, and service, we proudly boast over 15 years of industry expertise, standing at the forefront of technological advancements.
Our extensive product line includes cutting-edge high-voltage solid-state soft starters, innovative capacitor cabinets, versatile high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and robust substations. These products are the backbone of a myriad of sectors, finding indispensable applications in energy and chemical industries, the demanding arenas of metal smelting, expansive electric power grids, and the innovative fields of industrial manufacturing. Our influence extends to prestigious universities and research institutions, the vital medical and pharmaceutical sectors, the essential municipal commerce, water conservancy and hydropower projects, efficient road traffic systems, as well as vibrant commercial and residential spaces.
Embracing a philosophy of relentless technological innovation and smart manufacturing, we continually attract high-caliber technical talents to bolster our core competencies, ensuring unparalleled value for our clientele and aspiring to establish an unparalleled brand presence in the industry. Since our inception, we have charted a course of remarkable progress, advancing from our inception to excellence. Our unwavering commitment to innovation underpins our modern business ethos, pursuing survival through unparalleled quality, a market-oriented approach, development built on our solid reputation, and efficiency achieved through meticulous management. Our unwavering commitment to "technology as the guide, standardized management, superior quality, and ultimate customer satisfaction" underpins our quality assurance and talent management strategies, enhancing our competitive edge in the market. We are resolute in our mission to empower China's electric power and grid sectors with expedience, strength, and elevated aspirations. Integrity forms our foundation, quality is our hallmark, service is paramount, and customer satisfaction is our perpetual mission. Our pursuit of excellence, relentless innovation, and commitment to building a trustworthy brand are the cornerstones of our development aspirations. Your trust and satisfaction fuel our journey. We extend our heartfelt gratitude to our cherished new and loyal customers for their unwavering support and faith. Senhang Technology eagerly anticipates collaborating with you to forge a 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.