Product Description
Oil Immersed Series Transformer:
Introducing the S11-M series, a fully sealed oil-immersed power transformer engineered by Chaotai Power. This innovative transformer boasts exceptional features such as low loss, minimal noise, and unparalleled efficiency, delivering outstanding energy-saving performance while minimizing environmental impact. Unlike conventional oil-immersed transformers, this cutting-edge design eliminates the need for an oil conservator, utilizing the elasticity of corrugated sheets within the oil tank to autonomously adjust and compensate for oil volume changes. By isolating the transformer from air exposure, this design significantly decelerates oil degradation and insulation aging, ensuring superior operational reliability and eliminating the need for maintenance during normal operations.
1. Power Capacity: 25-2500KVA, with voltage options of 24KV, 30KV, 33KV, 35KV, 36KV, and customized solutions to meet specific customer requirements. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation for precise control.
4. Tapping Range: Offering a diversified range of ±5%, 2x2.5%, and ±4x2.5% for optimal performance adaptability.
5. Frequency: Operates efficiently at both 50Hz and 60Hz.
6. Phases: Available in both three-phase and single-phase configurations to suit diverse applications.
7. Connection Symbol: Configurable to Dyn11, Yyn0, or tailored as per specific requests.
8. Short-circuit Impedance: Engineered with standard impedance for robust performance.
9. Designed for altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C. Should these conditions not be met, parameter adjustments will be made according to standard protocols.
Parameters will be modulated in accordance with standard guidelines to ensure compliance.
Power Capacity: 25-2500KVA
Voltage Options: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level:
Type of Voltage Regulation: Off-circuit or On-load
Tapping Range: ±5% ±2x2.5% ±4x2.5%
Frequency: 50Hz or 60Hz
Phases: Three-phase or single-phase
Connection Symbol: Dyn11, Yyn0 (or customized as requested)
Short-circuit Impedance: Standard Impedance
Designed for altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C
Should these conditions not be met, parameters will be modulated according to standard protocols.
The fully sealed oil-immersed power transformer by Chaotai Power is a marvel of engineering, featuring low loss, minimal noise, and high efficiency for superior energy-saving capability and reduced environmental pollution.
Unlike traditional oil-immersed transformers, this advanced fully sealed model eliminates the oil conservator. The oil volume is automatically adjusted and compensated by the flexible corrugated sheet within the oil tank, isolating the transformer from air to significantly slow down oil degradation and insulation aging. This enhances operational reliability and ensures maintenance-free performance during regular use.
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 as a beacon of innovation and excellence in the realm of electrical integration. Proudly recognized as a high-tech enterprise, we boast a dedicated team specializing in research and development, production, and service, backed by over 15 years of unrivaled industry expertise.
Our extensive product range is a testament to our commitment to quality and innovation, featuring advanced high-voltage solid-state soft starters, robust capacitor cabinets, versatile high and low voltage switchgear, sophisticated gas-insulated switchgear, and comprehensive substations. These products find their applications across a myriad of sectors, including energy and chemical industries, metal smelting, power grids, industrial manufacturing, educational and research institutions, the medical and pharmaceutical industries, municipal commerce, water conservancy and hydropower, road traffic systems, and both commercial and residential environments.
Driven by a relentless pursuit of excellence, we embrace the philosophy of 'smart manufacturing,' constantly infusing our ranks with top-tier technical talents to fortify our competitive edge. Our mission is to deliver unparalleled value to our clients while aspiring to establish ourselves as the industry's premier brand. From our humble beginnings, we have embarked on a journey of transformation—progressing from inception to success, and from achievement to greatness. Innovation remains our hallmark as we navigate a modern business trajectory where quality is our survival key, reputation shapes our development, and efficiency governs our management. We are steadfast in our dedication to guiding technology, ensuring standardized management, delivering superior quality, and achieving customer satisfaction. These principles underpin our efforts to enhance competitiveness in the market, serving China's power and grid sectors with accelerated, stronger, and loftier objectives. Our core values are anchored in integrity, premium quality, supreme service, and unwavering customer satisfaction—principles that drive our pursuit of excellence, continuous innovation, and the creation of a dependable brand. We express our heartfelt gratitude to our esteemed clients, both new and long-standing, for their trust and support. Senhang Technology eagerly anticipates a collaborative journey with you towards an illuminated 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.
Audited Supplier 
){kind=link}