Product Description



Oil Immersed Series Transformer: A Symphony of Innovation and Efficiency
Introducing the S11-M Series Fully Sealed Oil Immersed Power Transformer, a marvel crafted by Chaotai Power, celebrated for its remarkable low loss, serene operation, and sterling high efficiency. This powerhouse delivers outstanding energy savings and minimizes environmental impact. Unlike conventional oil-immersed transformers, this cutting-edge, fully sealed design eliminates the need for an oil conservator. It smartly adapts to changes in oil volume with the innovative elasticity of its corrugated oil tank sheet. The transformer is enveloped against air exposure, effectively preventing oil deterioration and insulation aging, thus significantly enhancing operational reliability and ensuring maintenance-free performance under standard conditions.
1. Power Capacity: Ranging from 25KVA to a robust 2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, and customized specifications as per customer requirements. 2. Voltage Level: Versatile levels including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Options available for Off-circuit or On-load regulation, catering to diverse operational needs.
4. Tapping Range: Precision adjustments with ±5%, ±2x2.5%, ±4x2.5% for optimal performance tuning.
5. Frequency: Available in both standard frequencies, 50Hz or 60Hz, to suit global demands.
6. Phases: Engineered for compatibility with Three-phase or Single-phase systems.
7. Connection Symbol: Configurable with Dyn11, Yyn0, or tailored as per customer specifications.
8. Short-circuit Impedance: Designed with Standard Impedance to ensure stability and reliability.
9. Altitude suitability: Ideal for altitudes not exceeding 1000m. Ambient temperature operational range up to 40°C. Parameter modulation is available if these conditions are exceeded.
This adaptability ensures compliance with standards for a variety of environmental conditions.
Power Capacity: A broad spectrum from 25KVA up to 2500KVA, engineered for diverse applications.
Voltage Levels: Diverse options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, ensuring suitability for a wide range of voltage requirements.
Voltage Level: Comprehensive options for tailored electrical solutions.
Type of Voltage Regulation: Choose between Off-circuit or On-load, designed to meet specific operational criteria.
Tapping Range: Fine-tuning capabilities with ±5%, ±2x2.5%, ±4x2.5%, ensuring peak transformer efficiency.
Frequency: Seamlessly compatible with either 50Hz or 60Hz, accommodating international standards.
Phases: Flexibility to operate within Three-phase or Single-phase electrical systems.
Connection Symbol: Available in Dyn11, Yyn0, or customizable configurations as per client needs.
Short-circuit Impedance: Designed to uphold the highest standards of electrical stability and performance.
Altitude Compatibility: Optimal use up to 1000m, with operational temperatures not surpassing 40°C.
Modulation of parameters is available to ensure compliance with standards when conditions deviate.
The fully sealed oil immersed power transformer by Chaotai Power represents excellence with its low-loss, quiet operation, and energy-efficient design, setting a benchmark for pollution reduction.
This state-of-the-art transformer stands apart from standard oil-immersed models by eliminating the traditional oil conservator. The ingenious design leverages the corrugated oil tank’s elasticity for automatic oil volume adjustments, safeguarding against air exposure. This feature helps inhibit oil degradation and insulation aging, boosting operational reliability while ensuring that maintenance is virtually unnecessary during normal usage.
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 and excellence in the electrical integration industry. As a distinguished high-tech enterprise, we boast a formidable team dedicated to research, development, production, and service, fortified by over 15 years of rich experience.
Our impressive portfolio of products encompasses high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These advanced solutions find application across a spectrum of fields including energy and chemical sectors, metal smelting, power grids, industrial manufacturing, academic research, medical and pharmaceutical spaces, municipal commerce, water conservancy, hydropower, transportation networks, and diverse urban and residential environments.
Our unwavering commitment to technological innovation and our visionary 'smart manufacturing' philosophy drives us to recruit elite technical talents, thus significantly enhancing our core competitive edge. We are relentless in our pursuit to deliver unparalleled value to our clients, aspiring to forge the preeminent brand in our industry. Since our inception, we have transformed from a budding enterprise into an industry leader, adhering to a modern business strategy built on quality, market orientation, reputation-driven development, and efficient management. We pledge to uphold 'technology as our compass, standardized management, superior quality, and unwavering customer satisfaction' as the cornerstones of our quality and talent management framework, continuously strengthening our market position. Our mission is to advance the transmission and distribution sectors of China's electric power and grid with unmatched speed, strength, and ambition. Guided by integrity, prioritizing superior quality, and delivering exceptional service, we hold customer satisfaction as our perpetual promise. Our dedication to excellence, relentless innovation, and the cultivation of a reputable brand are the steadfast goals of our development journey. Your trust and recognition fuel our progress, and we extend our heartfelt gratitude to all our esteemed clients for their steadfast support and loyalty. Zhejiang ChaoTai Complete Equipment Co., Ltd. eagerly anticipates forging collaborative partnerships to shape 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.