Product Description



Oil Immersed Series Transformer:
The S11-M series of fully sealed oil-immersed power transformers, crafted by Chaotai Power, stand out with their remarkable features of minimal loss, whisper-quiet operation, and exceptional efficiency. These qualities not only yield impressive energy savings but also contribute significantly to reducing environmental pollution. This cutting-edge transformer design eliminates the need for a traditional oil conservator. Instead, it ingeniously uses the corrugated oil tank's flexible design to naturally adjust and compensate for oil volume changes, thus ensuring the transformer remains isolated from the air. This innovation serves to prolong the life of the oil and insulation, boosting operational reliability and eliminating the need for maintenance under normal operations.
1. Power Capacity: Ranges from 25 to 2500 KVA, with options in 24KV, 30KV, 33KV, 35KV, 36KV, and customizable according to customer specifications. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation, tailored to fit diverse applications.
4. Tapping Range: Features a range of ±5 % and customizable options of 2x2.5 % and ±4x2.5 % to meet specific needs.
5. Frequency: Compatible with both 50Hz and 60Hz systems, providing flexibility and adaptability.
6. Phases: Available in both three-phase and single-phase configurations to suit varied operational requirements.
7. Connection Symbol: Comes in Dyn11 and Yyn0 configurations, or as requested by the customer for tailored solutions.
8. Short-circuit Impedance: Designed to meet standard impedance specifications, ensuring reliable performance.
9. Altitude: Designed to operate efficiently at altitudes not exceeding 1000m, with ambient temperatures not surpassing 40°C.
Should operating conditions exceed these parameters, we will adjust them to meet the appropriate standards.
Power Capacity: Wide range from 25 to 2500KVA, accommodating various demands.
Voltage Range: Flexible options including 10KV, 11KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV, covering a broad spectrum of applications.
Voltage Level: Diverse levels to suit specific requirements.
Voltage Regulation Type: Options for Off-circuit and On-load regulation, adaptable to different operational needs.
Tapping Range: Customizable at ±5%, ±2x2.5%, and ±4x2.5%, offering precise control.
Frequency Compatibility: Supports both 50Hz and 60Hz, ensuring versatility in global applications.
Phases: Offered in three-phase or single-phase, matching varied system configurations.
Connection Symbols: Available in configurations such as Dyn11 and Yyn0, with custom options as required.
Short-circuit Impedance: Engineered to meet standard requirements for dependable operation.
Altitude and Temperature: Efficiently functions at altitudes not exceeding 1000m and temperatures below 40°C.
Parameter Adjustment: If conditions exceed design parameters, adjustments are made to comply with industry standards.
Chaotai Power's fully sealed oil-immersed transformers boast remarkable features of low loss, minimal noise, and superior efficiency, delivering outstanding energy savings while effectively reducing pollution.
The innovative design of the fully sealed transformer forgoes the traditional oil conservator, uses the adaptable corrugated oil tank to naturally adjust oil volume changes, ensuring full isolation from air. This design innovation prevents oil deterioration and insulation aging, enhances reliability, and ensures maintenance-free operation under standard 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 proudly as a beacon of innovation in the realm of electrical integration. As a high-tech enterprise, we deliver excellence with our dynamic team in research and development, manufacturing, and service, boasting more than 15 years of profound industry expertise.
Our cutting-edge product lineup spans high-voltage solid-state soft starters, capacitor cabinets, and sophisticated high and low voltage switchgear, including state-of-the-art gas-insulated systems and complete substation solutions. Our offerings power a multitude of sectors, from energy and chemical industries to metal smelting and electric power grids. We support industrial manufacturing, academia, healthcare, municipal projects, water conservancy, road traffic, and both commercial and residential zones, driving progress across varied landscapes.
Dedicated to relentless technological advancement, Zhejiang Chaotai embraces a 'smart manufacturing' philosophy, bolstering our team with top-tier technical talent to sharpen our competitive edge. We offer unparalleled service, aspiring to become the industry's leading brand. Our journey is marked by relentless improvement, evolving from humble beginnings to industry excellence. We live by a creed of quality-focused perseverance, market responsiveness, and reputation-driven growth, all while maintaining efficiency through astute management. Our commitment lies in guiding technology, managing with precision, ensuring outstanding quality, and achieving customer delight. This ethos enhances our competitive stance, empowering us to better serve China's power transmission and distribution fields with ambitious targets. Integrity is our foundation, quality our hallmark, service our priority, and your satisfaction our enduring promise. We are driven by a pursuit of excellence, ceaseless innovation, and a dedication to cultivating a brand synonymous with trust. Your continual support fuels us, and we extend our heartfelt appreciation to all customers past and present. Together with Senhang Technology, we eagerly anticipate forging a brighter 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.